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EDITORIAL |
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Message from IAOMP president |
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K Ranganathan DOI:10.4103/0973-029X.180895 PMID:27194849 |
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Message from IAOMP secretary |
p. 2 |
N Chaitanya Babu DOI:10.4103/0973-029X.180897 PMID:27194850 |
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Message from IAOMP treasurer
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P Nainani DOI:10.4103/0973-029X.180899 PMID:27194851 |
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From the Editor's desk |
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Radhika Manoj Bavle DOI:10.4103/0973-029X.180900 PMID:27194852 |
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CANCER CONUNDRUM |
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Cancer Conundrum |
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Radhika M Bavle, M Sudhakara DOI:10.4103/0973-029X.180902 PMID:27194853 |
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ENIGMATIC MORPHO INSIGHT |
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Toto bodies |
p. 9 |
Kunal Sah DOI:10.4103/0973-029X.180903 PMID:27194854 |
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ORIGINAL ARTICLES |
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Do the presence of Barr bodies in male jail inmates indicates criminality: A pilot study |
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Mayuri K Kulkarni, Pradeep D Somannavar, Vijayalakshmi Kotrashetti, Ramakant Nayak, Jagadish Hosmani, Deepa Babji DOI:10.4103/0973-029X.180906 PMID:27194855Background: Cytogenetic studies from past decades have shown that interphase cells of female cats contain a densely stained chromatin mass in their nuclei called as Barr bodies (BBs) named after the scientist Murray Barr. BBs are unique chromatin structures formed due to the condensation of the X-chromosome. Many psychopathic disorders originate from defective genes including the multiple X syndromes. Males with extra X-chromosome generally present with severe personality disorder. The present study was conducted to determine the presence of extra X-chromosome in male jail inmates through the detection of BB in peripheral blood and buccal smear. Materials and Methods: Study included 100 male subjects (fifty jail inmates and fifty controls), after obtaining the consent, peripheral blood smears (PBS) and buccal smears (BS) were prepared and stained using Leishman's and cresyl violet stain respectively. One hundred neutrophils in PBS and epithelial cells in BS were screened for detection of the BB; accumulated data were tabulated and statistically analyzed using t-test and Chi-square test. Results: 60% of cases in PBS and 36% in BS showed positivity for the presence of BB in jail inmates as compared to 14% of cases in PBS and none in BS were positive for BB in controls. Conclusion: Presence of BB in male suggests increased likelihood of criminal tendencies. Further studies are to be carried out to compare the results with karyotyping.
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Long-term effect of tobacco on unstimulated salivary pH |
p. 16 |
Neeraj Grover, Jyoti Sharma, Shamindra Sengupta, Sanjeet Singh, Nishant Singh, Harjeet Kaur DOI:10.4103/0973-029X.180907 PMID:27194856Aims and Objectives: The aim of this study was to analyze and compare the effects of tobacco on salivary pH between tobacco chewers, smokers and controls. Materials and Methods: A total of 60 subjects (males and females) aged 25-40 years, were divided equally into three groups: Tobacco smokers (Group A), chewers (Group B) and controls (Group C). Saliva of each subject was collected under resting condition. Salivary pH was determined using the specific salivary pH meter. Results: The mean (±standard deviation) pH for Group A was 6.75 (±0.11), Group B was 6.5 (±0.29) and Group C was 7.00 (±0.28) after comparison. The significant results showed lower salivary pH in Groups A and B as compared to controls. Salivary pH was lowest in Group B compared to Group A and Group C. Conclusion : This study indicates that a lower (acidic) salivary pH was observed in tobacco users as compared with control. These alterations in pH due to the long-term effect of tobacco use can render oral mucosa vulnerable to various oral and dental diseases. |
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Mounting ground sections of teeth: Cyanoacrylate adhesive versus Canada balsam |
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Manogna R.L. Vangala, Amrutha Rudraraju, RV Subramanyam DOI:10.4103/0973-029X.180911 PMID:27194857Introduction: Hard tissues can be studied by either decalcification or by preparing ground sections. Various mounting media have been tried and used for ground sections of teeth. However, there are very few studies on the use of cyanoacrylate adhesive as a mounting medium. Aims: The aim of our study was to evaluate the efficacy of cyanoacrylate adhesive (Fevikwik™) as a mounting medium for ground sections of teeth and to compare these ground sections with those mounted with Canada balsam. Materials and Methods: Ground sections were prepared from twenty extracted teeth. Each section was divided into two halves and mounted on one slide, one with cyanoacrylate adhesive (Fevikwik™) and the other with Canada balsam. Scoring for various features in the ground sections was done by two independent observers. Statistical Analysis Used: Statistical analysis using Student's t-test (unpaired) of average scores was performed for each feature observed. Results: No statistically significant difference was found between the two for most of the features. However, cyanoacrylate was found to be better than Canada balsam for observing striae of Retzius (P < 0.0205), enamel lamellae (P < 0.036), dentinal tubules (P < 0.0057), interglobular dentin (P < 0.0001), sclerotic dentin - transmitted light (P < 0.00001), sclerotic dentin - polarized light (P < 0.0002) and Sharpey's fibers (P < 0.0004). Conclusions: This initial study shows that cyanoacrylate is better than Canada balsam for observing certain features of ground sections of teeth. However, it remains to be seen whether it will be useful for studying undecalcified sections of carious teeth and for soft tissue sections. |
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A correlative study of the levels of salivary Streptococcus mutans, lactobacilli and Actinomyces with dental caries experience in subjects with mixed and permanent dentition |
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Achala Chokshi, Pushpalatha Mahesh, P Sharada, Krunal Chokshi, S Anupriya, BK Ashwini DOI:10.4103/0973-029X.180916 PMID:27194858Purpose: The aim of the study was to estimate the salivary levels of Streptococcus mutans, Lactobacilli and Actinomyces and to correlate it with dental caries experience in mixed and permanent dentition. Materials and Methods: The sample size comprised 110 subjects. The decayed, missing and filled teeth (DMFT) index of all the individuals participating in the study was calculated. Saliva samples were collected from patients and samples were inoculated on specific culture media and incubated for a period of 48 h. Based on colony characteristics, S. mutans, Lactobacilli and Actinomyces were identified. Results: A positive correlation exists between DMFT and S. mutans, Lactobacilli and Actinomyces in mixed dentition and permanent dentition group samples (P < 0.001). Conclusion: The conclusion from the results obtained was that S. Mutans, lactobacilli and Actinomyces which are the components of the normal microbial flora of the oral cavity play an important role in the pathogenesis of dental caries and increased number of microorganisms is associated with an increased caries frequency. |
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Immunohistochemical expression of p53 and its clinicopathological correlation with modified Anneroth's histological grading system |
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Kajal V Dave, Monali Chalishazar, Vishal R Dave, Pritam Panja, Manisha Singh, Tapan G Modi DOI:10.4103/0973-029X.180922 PMID:27194859Introduction and Objectives: Oral squamous cell carcinoma (OSCC) is an epithelial neoplasm generally beginning as focal overgrowth of altered stem cells near the basement membrane, moving upward and laterally, replacing the normal epithelium. Histopathological grading has been used for many decades in an attempt to predict the clinical behavior of oral squamous cell carcinoma. In the present study, Forty biopsies were studied for histological grading and p53 expression. The p53 expression was studied in relation to clinical parameters such as age, sex of patient and site of tumors. Relation between histological grade of malignancy and p53 protein expression was analysed. All cases were classified according to Anneroth's histological malignancy grading system (1987). Materials and Methods: 40 cases of OSCC were assessed for clinical parameters, Anneroth's histological grading and immunohistochemically stained with p53 protien. Statistical Analysis: The results obtained were analyzed using Spearman's Co-relation. Observations and Results: The positive expression of p53 was found in 62% of carcinomas studied. Positivity of p53 showed correlation with histological grade of malignancy and with individual parameters like degree of keratinization, nuclear polymorphism, number of mitoses and lymphoplasmacytic infiltration while showed a negative correlation with pattern of invasion. Conclusion: Our study showed a significant correlation between parameters of tumor cell population, lymphoplasmacytic infiltration and p53 expression. A significant association between high grade of malignancy and p53 overexpression and insignificant correlation of p53 with age, sex of the patient and site of the tumor was found. |
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Aggrandizing oral submucous fibrosis grading using an adjunct special stain: A pilot study |
p. 36 |
V Reshma, BK Varsha, P Rakesh, MB Radhika, M Soumya, Sarah D'Mello DOI:10.4103/0973-029X.180925 PMID:27194860Introduction: Oral submucous fibrosis (OSMF) is graded according to various histological factors which include the epithelial changes and the connective tissue changes. These features though could be identified in routine hematoxylin and eosin (H and E) staining; they could be better appreciated in special stains. This pilot study is an attempt to identify a single special stain that can act as an adjunct to H and E stain to help grade this potentially malignant disease. Aims and Objectives: To assess if special stains can improvise on differentiating the various histological changes seen in OSMF and to accordingly grade OSMF cases. Materials and Methods: Formalin-fixed paraffin-embedded tissue sections of OSMF-10 cases of each grade (n = 30). Three special stains: Van-Gieson, Mallory's trichrome and Masson trichrome. Statistical Analysis: The results obtained were tabulated and statistically analyzed using Chi-square test. Observations and Results: The thickness and degree of keratinization were best detected in Mallory's stain (100%) and were statistically significant; the subepithelial changes were better detected using special stains, especially Mallory's stain (100%). The changes in collagen fibers were better visualized in all three special stains but were not statistically significant. The changes in blood vessels were better detected in Van-Gieson's and Mallory's stain; the obtained results were statistically significant. The degree of fibrosis between muscle bundles could be detected in all the three special stains, but when compared the results were not statistically significant. The questionable areas of muscle degeneration, especially in deeper connective tissue were better detected in Mallory's (43%) and Masson's stain (43%) as compared to Van-Gieson stain (14%) and the results obtained were statistically significant. The inflammatory cells and dysplastic features are better visualized in routine H and E stains. Conclusion: Pathogenesis of OSMF is related to fibro-elastic and muscle degenerative changes in the connective tissue followed by secondary changes in epithelium. Routine H and E, stains all the connective tissue components in various shades of pink, use of special stains bestows contrast between different components of connective tissue, thus improvising grading of OSMF. Mallory's stain can be used as a single adjunct to H and E stain as both pattern of keratinization in the epithelium and changes in the superficial and deeper connective tissue could be ascertained. |
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Immunohistochemical detection of the receptor activator of nuclear factor Kappa B ligand and c-fos in giant cell granuloma |
p. 47 |
Atif A Ahmed, Charles Dunlap DOI:10.4103/0973-029X.180928 PMID:27194861Background: Giant cell granuloma (GCG) is an intraosseous giant cell fibroblastic lesion that predominantly affects the jaw bones in children and adults. Despite its frequent local progression and destructive effect, it is traditionally considered reparative or reactive in nature. The receptor activator of nuclear factor Kappa B ligand (RANKL), a member of the tumor necrosis factor family and the transcription factor c-fos play a major role in osteoclast proliferation and differentiation. In this study, we examined the expression of RANKL and c-fos in lesional tissues from seven patients with GCG. Materials and Methods: Automated immunohistochemical staining was performed on formalin-fixed paraffin-embedded sections from 7 cases, using antibodies against RANKL, c-fos and p53. Results: All tissues showed nuclear staining for c-fos and cytoplasmic staining for RANKL. The staining was strong, diffuse and observed in both mononuclear lesional cells and giant cells. No staining was observed with p53. Conclusion: Expression of RANKL and c-fos in this lesion, similar to what has been reported in giant cell tumors of bone, suggests a similar pathogenesis and hence a potential response to anti-RANKL inhibitors. A larger study is needed to confirm these findings and define the relationship of this lesion to other giant cell-rich bone lesions. |
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Quantitative evaluation of microvessel density using CD34 in clinical variants of ameloblastoma: An immunohistochemical study |
p. 51 |
Treville Pereira, Shashibhushan Dodal, Avinash Tamgadge, Sudhir Bhalerao, Sandhya Tamgadge DOI:10.4103/0973-029X.180929 PMID:27194862Background: Odontogenic epithelium plays an important role in the histogenesis of odontogenic tumors of the jaws. Ameloblastomas, which arise from odontogenic epithelium, are considered benign with little tendency to metastasize. Tumors require an adequate supply of oxygen and a way to remove their waste products. This can be achieved by angiogenesis. In situ quantification of the microvessel density (MVD) is a usual method for assessing angiogenesis. Moreover, angiogenesis may differ in subtypes of ameloblastomas and could play a role in determining the pattern of tumor growth. Aim: The aim of the present study was to demonstrate the expression of cluster of differentiation (CD34) in variants of ameloblastomas and to correlate and compare their expression to the aggressive behavior. Materials and Methods: A retrospective cross-sectional study which included forty paraffin blocks was conducted after obtaining ethical committee clearance. Ten cases of pyogenic granuloma were used as a positive control and thirty cases were of solid multicystic ameloblastoma (SMA), unicystic ameloblastoma (UA) and desmoplastic ameloblastomas. Angiogenesis was assessed using CD34 antigen and was immunohistochemically localized. Statistical analysis was carried out for comparative analysis with the help of ANOVA test, Kolmogorov-Smirnov test and least significance difference test. Results: A significant correlation was obtained between the MVD of all the three variants, i.e., SMA, UA and desmoplastic ameloblastomas which was statistically significant (P < 0.05). Conclusion: Increased MVD in the three variants, i.e., SMA, UA and desmoplastic ameloblastoma seen in the present study could suggest that the angiogenesis has an important role in tumor progression and aggressiveness of ameloblastomas. |
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Role of preprocedural rinse and high volume evacuator in reducing bacterial contamination in bioaerosols |
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TV Narayana, Leeky Mohanty, G Sreenath, Pavani Vidhyadhari DOI:10.4103/0973-029X.180931 PMID:27194863Context: Microbial contamination, which occurs during dental procedures, has been a potential threat to dental professionals and individuals. There has been a growing concern over the role of bioaerosols in spread of various airborne infections and also to reduce the risk of bioaerosol contamination. Aims: This study was to analyze the number of colony forming units (CFUs) in bioaerosols generated during ultrasonic scaling procedure as well as to evaluate the efficacy of chlorhexidine 0.12% (CHX) preprocedural mouth rinse and high volume evacuator (HVE) in minimizing the bioaerosol contamination.
Methods: About 45 individuals were divided into three Groups A, B and C. These groups underwent ultrasonic scaling before and after the use of CHX (0.12%), HVE and combination of CHX (0.12%) and HVE. Bioaerosols were collected on blood agar plates which were incubated at 37°C for 48 h, and the CFUs were counted with manual colony counting device. A comparison was also done between A versus B, B versus C and A versus C groups. Statistical Analysis Used: Student's t-test. Results: We found a significant reduction in the CFUs when CHX (0.12%) preprocedural rinse (P < 0), or HVE (P < 0.001) or combination of both CHX (0.12%) and HVE were employed (P < 0.001). Maximum reduction in CFUs was observed when CHX (0.12%) and HVE were used in combination as compared to their individual use. A moderate significance was seen between A versus C groups but not with B versus C groups and A versus B groups. Conclusion: From our study, we conclude that individual methods such as CHX (0.12%) and HVE were useful to reduce the dental bioaerosols; however, combination of both CHX (0.12%) and HVE is more efficient to reduce dental bioaerosols than individual method. |
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Salivary alkaline phosphatase levels speak about association of smoking, diabetes and potentially malignant diseases??? |
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A Ravi Prakash, Kundana Indupuru, G Sreenath, M Rajini Kanth, A Vikram Simha Reddy, Y Indira DOI:10.4103/0973-029X.180934 PMID:27194864Background: Alkaline phosphatase (ALP) is a hydrolase intracellular enzyme participating in the metabolic processes of cells. Rise in salivary ALP (S-ALP) levels reflects inflammation and destruction of healthy tissues suggesting it as a clinical biomarker. S-ALP is used in analyzing the severity of the disease occurrence in smokers and nonsmokers who are diabetic and nondiabetic. S-ALP levels are analyzed using autoanalyzer in 40 patients who visited our department. Aims and Objectives: To determine the levels of S-ALP in diagnosing potentially malignant conditions and debilitating diseases in early stages of inflammation and altered cellular metabolism. Materials and Methods: The study groups include: (1) Group A - 10 smokers who are diabetic. (2) Group B - 10 smokers who are nondiabetic. (3) Group C - 10 nonsmokers who are diabetic. (4) Group D - 10 nonsmokers and nondiabetic as control. Unstimulated saliva samples are collected and run in auto-analyzer with ALP enzyme reagent to analyze ALP levels. Comparison is made between all the four groups. Results: Results were statistically significant with increased activity of ALP levels in saliva from Group A when compared to Group D. The results are Group A > Group B > Group C > Group D. The results also revealed significant raise in levels of ALP levels in saliva from smokers when compared to diabetes. Thus explaining adverse effects of smoking. Conclusion: S-ALP can be considered to be the biomarker for evaluating adverse effects of smoking, diabetes and other debilitating diseases in early stages. |
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Immunohistochemical expression of budding uninhibited by benzimidazole related 1 in leukoplakia and oral squamous cell carcinoma |
p. 71 |
Taneeru Sravya, Yeluri Sivaranjani, Guttikonda Venkateswara Rao DOI:10.4103/0973-029X.180938 PMID:27194865Background: Budding uninhibited by benzimidazole related 1 (BUBR1) is an important protein in the mitotic spindle assembly checkpoint. Alterations in expression of BUBR1 have been reported in many premalignant and malignant lesions. Aim: To compare the expression of BUBR1 with respect to the normal mucosa and degree of dysplasia in oral leukoplakia (OL) and also with respect to different histopathological grades of oral squamous cell carcinoma (OSCC). Materials and Methods: Neutral buffered formalin-fixed and paraffin-embedded biopsy specimens 30 each of normal, OL and OSCC tissue were included in this study. The expression of BUBR1 was detected using immunohistochemistry (IHC). The scores obtained were subjected to ANOVA test. Results: Significant correlation was found in immunostaining between normal, dysplasia and OSCC groups with a P value of 0.00001. The expression of BUBR1 was significant when compared with different degrees of dysplasia and in different histopathological grades of OSCC with a P value of 0.00001. Conclusion: Higher IHC scores were obtained with increased histopathological grades of OL and OSCC suggesting its role as a prognostic indicator. |
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A 5 year retrospective study of biopsied jaw lesions with the assessment of concordance between clinical and histopathological diagnoses |
p. 78 |
Elif Peker, Faruk Öğütlü, İnci Rana Karaca, Elif Sibel Gültekin, Merve Çakır DOI:10.4103/0973-029X.180945 PMID:27194866Introduction: The jaw can be affected by several lesions that manifest in the oral cavity, but little is known about their distribution patterns in various populations. Aims and Objectives: This study presents the frequency and distribution of biopsied jaw lesions recorded in Faculty of Dentistry and gathers the information including provisional and final diagnosis of the lesions. Material and Methods: Biopsy of 1938 lesions (2008-2013) was reviewed and 1473 lesions were included in this study. The provisional diagnosis and histopathological validations of lesions were compared. Data on the location of the lesion, as well as patient demographics, were also evaluated. The lesions were divided into three major groups as 1 - developmental/reactive and inflammatory lesions of the jaw, 2 - cystic lesion and 3 - tumor and tumor-like lesions. Statistical Analysis: The variables were recorded and analysed using descriptive statistics. Results and Observations: Three hundred and ninety-six lesions were in Group 1 and periapical granuloma was the most frequent diagnosis. Seven hundred and eighty-nine lesions were in Group 2 and the radicular cyst was the most frequent diagnosis. Two hundred and eighty-eight lesions were in Group 3 and the keratocystic odontogenic tumor was the most frequent. Two hundred and ninety-one biopsied lesions were in disagreement with respect to the diagnoses on clinical and histopathological examination. Conclusion: Consequently, a provisional diagnosis of some of the malignant lesions was reactive, inflammatory, cystic or benign lesions, therefore the importance of evaluation of the specimen is emphasized. |
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Economic methods used in fabrication of tissue microarray: A pilot study |
p. 86 |
Sahana Srinath, Rohit Kumar Kendole, Pavana Gopinath, Srinath Krishnappa, SK Vishwanath DOI:10.4103/0973-029X.180948 PMID:27194867Background and Objective: Tissue microarray (TMA) is a method of harvesting small disks of tissue from a range of standard paraffin tissue blocks and placing them in an array on a recipient paraffin block such that hundreds of cases can be analyzed simultaneously by using only a few microliters of antibody in immunohistochemistry as a single experiment. The TMA construction done with the help of automated tissue arrayer or commercially available rubber molds are expensive. This study involved the fabrication of TMA using rubber-based additional silicone mold constructed in the department and comparison of this method with two other methods of fabricating TMA. Materials and Methods: The TMA mold was fabricated using silicone material in the department. The recipient blocks were prepared. The tissue core prepared from donor blocks were inserted into the recipient blocks. The sections taken from this were compared with the TMA using double-sided adhesive tape technique and TMA by punching out holes in prefabricated dummy paraffin recipient block for insertion of tissue core. Results: The TMA using a mold made of silicone showed more advantages than other two methods. Conclusion: Fabricating TMA mold using silicone in the department is inexpensive and yet efficient. |
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Correlation of mast cells in different stages of human periodontal diseases: Pilot study |
p. 91 |
Raina Agrawal, Jagriti Gupta, Krishna Kumar Gupta, Vinod Kumar DOI:10.4103/0973-029X.180950 PMID:27194868Aims and Objectives: The aim of this study was to evaluate and correlate the relationship between mast cells counts and different stages of human periodontal diseases. Materials and Methods: The study sample comprised 50 patients, which were divided into three groups, consisting of 10 cases of clinically healthy gingival tissues (control group) 20 cases of dental plaque-induced gingivitis with no attachment loss and 20 cases of localized chronic periodontitis (LCP) characterized by the loss of periodontal support. The samples for control group were obtained during tooth extractions for orthodontic reasons. The specimens were immediately fixed in 10% neutral buffered formalin. Conclusion: In this study, LCP cases had higher mast cell counts compared to gingivitis sites or healthy tissues. Increased mast cell counts in the progressing sites of periodontal diseases may indicate the importance of these cells in the progression of chronic periodontitis. |
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Expression of human telomerase reverse transcriptase protein in oral epithelial dysplasia and oral squamous cell carcinoma: An immunohistochemical study |
p. 96 |
Bangalore Nagarajachar Raghunandan, Karpagaselvi Sanjai, Jayalakshmi Kumaraswamy, Lokesh Papaiah, Bhavna Pandey, Bellur MadhavaRao Jyothi DOI:10.4103/0973-029X.180953 PMID:27194869Background: Telomerase is an RNA-dependent DNA polymerase that synthesizes TTAGGG telomeric DNA sequences and almost universally provides the molecular basis for unlimited proliferative potential. The telomeres become shorter with each cycle of replication and reach a critical limit; most cells die or enter stage of replicative senescence. Telomere length maintenance by telomerase is required for all the cells that exhibit limitless replicative potential. It has been postulated that reactivation of telomerase expression is necessary for the continuous proliferation of neoplastic cells to attain immortality. Use of immunohistochemistry (IHC) is a useful, reliable method of localizing the human telomerase reverse transcriptase (hTERT) protein in tissue sections which permits cellular localization. Although there exists a lot of information on telomerase in oral cancer, little is known about their expression in oral epithelial dysplasia and their progression to oral squamous cell carcinoma (OSCC) compared to normal oral mucosa. This study addresses this lacuna. Aims: To compare the expression of hTERT protein in oral epithelial dysplasia and OSCC with normal oral mucosa by Immunohistochemical method. Subjects and Methods: In this preliminary study, IHC was used to detect the expression of hTERT protein in OSCC (n = 20), oral epithelial dysplasia (n = 21) and normal oral mucosa (n = 10). The tissue localization of immunostain, cellular localization of immunostain, nature of stain, intensity of stain, percentage of cells stained with hTERT protein were studied. A total number of 100 cells were counted in each slide. Statistical Analysis: All the data were analyzed using SPSS software version 16.0. The tissue localization, cellular localization of cytoplasmic/nuclear/both of hTERT stain, staining intensity was compared across the groups using Pearson's Chi-square test. The mean percentage of cells stained for oral epithelial dysplasia, OSCC and normal oral mucosa were compared using analysis of variance (ANOVA). A P < 0.05 was considered to be statistically significant. Results: The mean hTERT positive cells in the study groups were as follows, 62.91% in normal oral mucosa samples, 77.06% in oral epithelial dysplasia cases, and 81.48% in OSCC. In 61.9% of oral epithelial dysplasia and 65% of OSCC in our study, staining was visualized within the nucleus predominantly in the dot like pattern. There was a statistically significant difference in the nature of nuclear stain between oral epithelial dysplasia and OSCC (P = 0.023). Conclusions: Our results suggests that the mean percentage of cells showing hTERT expression steadily increased from normal oral mucosa to oral epithelial dysplasia to OSCC. The steady trend of increase in the percentage of cells was evident in different grades of oral epithelial dysplasia group and OSCC. The nature of hTERT staining did show variations among the three groups and promise to be a potential surrogate marker for malignant transformation. Further studies using IHC on larger sample size and clinical follow-up of these patients will be ascertaining the full potential of hTERT as a surrogate marker of epithelial transformation. |
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Pyruvic acid levels in serum and saliva: A new course for oral cancer screening? |
p. 102 |
Manohara A Bhat, K.V.V. Prasad, Dheeraj Trivedi, BR Rajeev, Hemanth Battur DOI:10.4103/0973-029X.180955 PMID:27194870Objective: Cancerous cells show increased glycolysis rate. This will increase overall levels of pyruvate as it is one of the end products of glycolysis. The present on-going study is to estimate the levels of pyruvate in saliva and serum among healthy and oral cancer subjects. Settings and Design: Hospital-based cross-sectional comparative study. Methodology: A total of 50 subjects among healthy and oral cancer subjects were selected based on clinical and histological criteria. Saliva and serum samples were collected and subjected to pyruvate level estimation using biochemical analysis. Statistical Analysis: Descriptive analysis and Mann-Whitney test were used to find the statistical difference between the two independent groups. Results: Serum pyruvic acid levels of the healthy group were 1.09 ± 0.14 and for oral cancer, it was 2.95 ± 0.59 and salivary level were 3.49 ± 0.47 and 1.32 ± 0.10 respectively. Mann-Whitney test showed statistically significant difference in serum and salivary pyruvate level in between two groups (P < 0.000 respectively). Conclusion: The present study showed noticeable variation in the level of pyruvic acid among healthy and oral cancer subjects. This generates the hypothesis that estimation of the pyruvic acid can be a new tool to screening of the cancer. |
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REVIEW ARTICLES |
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Role of human papillomavirus and tumor suppressor genes in oral cancer |
p. 106 |
Vardendra Manvikar, Rama Kulkarni, Anila Koneru, M Vanishree DOI:10.4103/0973-029X.180958 PMID:27194871The incidence of oral cancer remains high and is associated with many deaths in both Western and Asian countries. Several risk factors for the development of oral cancer are now well known, including smoking, drinking and consumption of smokeless tobacco products. Genetic predisposition to oral cancer has been found in certain cases, but its components are not yet entirely clear. In accordance with the multi-step theory of carcinogenesis, the natural history of oral cancer seems to gradually evolve through transitional precursor lesions from normal epithelium to a full-blown metastatic phenotype. A number of genomic lesions accompany this transformation and a wealth of related results has appeared in recent literature and is being summarized here. Furthermore, several key genes have been implicated, especially well-known tumor suppressors such as the cyclin-dependent kinase inhibitors, TP53 and RB1 and oncogenes such as the cyclin family, epidermal growth factor receptor and RAS. Viral infections, particularly oncogenic human papillomavirus subtypes and Epstein-Barr virus, can have a tumorigenic effect on oral epithelia and their role is discussed, along with potential therapeutic interventions. A brief explanatory theoretical model of oral carcinogenesis is provided and potential avenues for further research are highlighted. |
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Prions in dentistry: A need to be concerned and known |
p. 111 |
B Sushma, Sachin Gugwad, Rajdeep Pavaskar, Shambhvi A Malik DOI:10.4103/0973-029X.180961 PMID:27194872Prion diseases were first discovered by Stanley B. Prusiner who defined prions as infectious, transmissible proteinaceous particles that lack nucleic acid and are composed exclusively of a modified isoform of the noninfectious cellular prion protein (PrPC). These are incurable neurodegenerative conditions affecting both animals and humans. They may be sporadic, infectious or inherited in origin. Human prion diseases include Creutzfeldt-Jakob desease (CJD), Gerstmann- Straussler-Scheinker disease, Kuru and Fatal familial insomnia. Prions resist the conventional sterilization procedures and hence the dentists must be aware of such diseases so as to opt standard methods of infection control and decontamination for such infectious agents. This review article divulge the dentists with a brief overview of the characteristics of prions, the risk of transmission and the implications for infection control in dentist. |
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Molecular markers in oral lichen planus: A systematic review |
p. 115 |
Shitalkumar Sagari, Sudhanshu Sanadhya, Mallikarjun Doddamani, Rajan Rajput DOI:10.4103/0973-029X.180964 PMID:27194873Oral lichen planus (OLP) is a chronic inflammatory mucosal disease that is usually detected in 0.5-2.2% of the human population. Among these, only 0.5-2.9% of the lesions progress to carcinoma. However, there are no prognostic markers available presently to recognize the increased risk in malignant transformation of the lesions. Selected markers for cell proliferation, adhesion, apoptosis and lymphocytic infiltration were analyzed by immunohistochemistry in addition to static cytometry for DNA content. The concept linking OLP and oral squamous cell carcinoma states that chronic inflammation results in crucial DNA damage, which further progresses to development of carcinoma. Even though in the past decade, enormous information has been accumulated on malignant potential of OLP, its transformation still remains unclear. Hence, the purpose of this article was to review cellular and molecular markers to understand the pathogenesis of OLP and its progression toward malignancy. |
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Epigenetics: A possible answer to the undeciphered etiopathogenesis and behavior of oral lesions |
p. 122 |
Narendra Nath Singh, Aakanksha Peer, Sherin Nair, Rupesh K Chaturvedi DOI:10.4103/0973-029X.180967 PMID:27194874Much controversy has existed over the etiopathogenesis and management of oral lesions, especially oral malignancies. The knowledge of genetic basis is proving to be inadequate in the light of emerging new mechanisms termed epigenetic phenomena. The present review article aims to understand the role of epigenetic mechanisms in oral lesions. Epigenetics is the study of acquired changes in chromatin structure that arise independently of a change in the underlying deoxyribonucleic acid (DNA) nucleotide sequence. Key components involved in epigenetic regulation are DNA methylation, histone modifications and modifications in micro ribonucleic acids (miRNA). Epigenetics is a reversible system that can be affected by various environmental factors such as diet, drugs, mental stress, physical activity and addictive substances such as tobacco, nicotine and alcohol. Epigenetics may also play a role in explaining the etiopathogenesis of developmental anomalies, genetic defects, cancer as well as substance addiction (tobacco, cigarette and alcohol). Epigenetic modifications may contribute to aberrant epigenetic mechanisms seen in oral precancers and cancers. In the near future, epigenetic variations found in oral dysplastic cells can act as a molecular fingerprint for malignancies. The literature in English language was searched and a structured scientific review and meta-analysis of scientific publications from the year 2000 to year 2015 was carried out from various journals. It was observed that epigenetic marks can prove to be novel markers for early diagnosis, prognosis and treatment of oral cancers as well as other oral diseases. |
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CASE REPORTS |
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A rare spindle-cell variant of non-Hodgkin's lymphoma of the mandible |
p. 129 |
N Srikant, Shanmukha Raviteja Yinti, Mohan Baliga, Hema Kini DOI:10.4103/0973-029X.180970 PMID:27194875A 64-year-old male farmer presented with a rapidly progressive swelling of the left mandible since 6 months. The swelling was firm to hard, diffuse, nontender, obliterating the vestibule with paresthesia of lower lip. The cone beam computed tomography imaging revealed an ill-defined, moth-eaten radiolucency with destruction of the buccal and lingual cortical plates. The rapid growth and aggressive behavior of the lesion coupled with guidance from the patient's previous reports from the incisional biopsy and fine needle aspiration cytology warranted a mandibular resection. Microscopic examination showed an encapsulated lesion situated in the connective tissue containing a mixture of proliferating spindle-shaped cells arranged in fascicles and round cells infiltrating into the connective tissue stroma and bone. The neoplastic cells exhibited atypical features such as pleomorphism, hyperchromatism and increased mitotic figures with noncleaved nuclei. A working diagnosis of a spindle-cell sarcoma was arrived at with various differentials provided such as fibrosarcoma, rhabdomyosarcoma, leiomyosarcoma, malignant peripheral nerve sheath tumor, Langerhans cell histiocytosis and lymphoma and stating the need for immunohistochemistry to subtype the tumor. The neoplastic cells were negative for Van Gieson's stain and Masson's trichrome. Immunohistochemical analysis performed using desmin, smooth muscle actin, S-100 and CD1a in a bid to determine the phenotype of the tumor and rule out the previously stated differentials were all negative for the lesion. Lymphoid markers such as leukocyte common antigen and CD20 (cluster differentiation marker for B-cells) showed positivity in spindle-shaped cells as well as round cells indicating the tumor to be a lymphoproliferative lesion of B-cell type. A final diagnosis of "spindle-cell variant of non-Hodgkin's lymphoma" was rendered based on the immunohistochemical profile. |
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Precursor B-cell lymphoblastic lymphoma of oral cavity: A case report with its diagnostic workup |
p. 133 |
Komal Ladharam Talreja, Suresh Ramchandra Barpande, Jyoti Dilip Bhavthankar, Mandakini S Mandale DOI:10.4103/0973-029X.180973 PMID:27194876Lymphoblastic lymphoma (LBL), seen primarily in children or young adults, is a malignant neoplasia that originates from B or T lymphocyte precursors and rarely occurs in the oral cavity. In this localization, neither the clinical features nor the radiologic appearances are pathognomic and can pose significant diagnostic problems. Histopathologically, it presents as a round blue cell tumor. An early and accurate diagnosis of this entity is very important due to its high cure rate. We report a case of B-cell LBL involving oral cavity in a 10-year-old child. The purpose of this report is to explore the diagnostic workup.
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Epithelioid hemangioendothelioma of the mandibular gingiva: A rare case of metastasis 4 years after radical excision and literature review |
p. 137 |
Attilio Carlo Salgarelli, Pierantonio Bellini, Livia Maccio, Giacomo Setti DOI:10.4103/0973-029X.180975 PMID:27194877Malignant epithelioid hemangioendothelioma (MEH), or high-risk epithelioid hemangioendothelioma, is a low- to intermediate-grade vascular malignancy. A few cases of MEH have been documented in the head and neck region, including the neck, thyroid gland, larynx and scalp. MEHs are extremely rare in the oral cavity. Only 31 cases of MEH in the oral cavity were described in English literature between 1975 and 2014. Further, only eleven cases were referred to MEH of the maxillary or mandibular gingiva. No gingival MEH metastases have been described in literature. We report a literature review and a case of MEH with a metastatic occurrence 4 years after surgical excision.
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Basal cell adenoma of maxillary sinus mimicking ameloblastoma |
p. 142 |
Priya Anil Bhagde, Suresh Ramchandra Barpande, Jyoti Dilip Bhavthankar, Jayanti G Humbe DOI:10.4103/0973-029X.180978 PMID:27194878Basal cell adenoma (BCA) is a rare basaloid tumor, with only 20% of cases occurring in minor salivary glands. Histologically, BCA is characterized by the presence of basaloid cells and may frequently be mistaken with canalicular adenoma, basal cell adenocarcinoma, adenoid cystic carcinoma and basaloid squamous cell carcinoma. Immunohistochemistry may aid in arriving at a final diagnosis as in the present case. Reported here is a case of locally aggressive BCA. Histologically, the lesion mimicked ameloblastoma and other entities which posed a diagnostic challenge. There are no reports of BCA presenting as an aggressive lesion available in English literature so far; moreover, merely a single case of BCA of maxillary sinus has been previously reported to the best of our cognition. This case report highlights the rarity of this tumor with regards to its site of origin, clinical behavior and histopathological mimics. |
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Sinonasal teratocarcinosarcoma: Case report of an unusual neoplasm |
p. 147 |
Soham Chakraborty, Anadi Roy Chowdhury, Goutam Bandyopadhyay DOI:10.4103/0973-029X.180979 PMID:27194879Sinonasal teratocarcinosarcoma is an extremely rare malignant tumor arising in the sinonasal tract, having combined histological features of teratoma and carcinosarcoma. Here, we are presenting a case of sinonasal teratocarcinosarcoma in a 28-year-old male patient. A 28-year-old male patient presented with left-sided nasal obstruction and recurrent epistaxis for last 2 months. On examination, a polypoid mass was noted in the left nasal cavity. The mass was surgically resected. Paraffin-embedded sections were made and stained with hematoxylin and eosin. Microscopic examination revealed intimate admixture of carcinomatous (adenocarcinoma), sarcomatous (chondrosarcoma), primitive neuroendocrine and teratoid elements (immature squamous elements). These findings clearly suggest the diagnosis of sinonasal teratocarcinosarcoma. Sinonasal teratocarcinosarcoma is highly malignant and locally aggressive. About 60% of the patients do not survive beyond 3 years. Total excision and extensive sampling are necessary to reach the diagnosis. Early diagnosis and management can give a better prognosis. |
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KNOW YOUR FIELD |
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Extraskeletal myxoid chondrosarcoma of maxilla: A rare entity |
p. 151 |
Janardan B Garde, Sangeeta J Palaskar, Pargatsingh T Kathuriya DOI:10.4103/0973-029X.180980 PMID:27194880 |
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FORENSIC CORNER - ORIGINAL ARTICLE |
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Adjunctive role of dental restorations in personal identification of burnt victims |
p. 154 |
Sameer Kumar Vandrangi, MB Radhika, K Paremala, V Reshma, M Sudhakara, Sreelatha S Hosthor DOI:10.4103/0973-029X.180981 PMID:27194881Background: Fire remains one of the major causes of morbidity and mortality throughout the world and identification of a body from the fatal fire remains a daunting task. Several forensic cases involve interpretation of burnt human bodies from airline and automobile accidents, bombings and unlawful cremation. Fire is also involved in homicides, suicides, accidental death, arson and in attempts to destroy forensic evidence in criminal cases. Soft tissue destruction from fire can be so extensive that conventional methods of identification may be impossible. However, teeth survive even high temperatures due to their resistant composition and so, obviously, the restorative material housed in the teeth are even more secure and can yield valuable information in personal identification. Aim: To assess the usefulness of most common restorations in personal identification in burnt cases . Materials and Methods: The study was conducted on 40 extracted teeth which were divided into four groups (Group 1 - Unrestored teeth, Group 2 - Amalgam restored, Group 3 - Glass ionomer restored and Group 4 - Composite resin restored teeth. The effect of incineration at 200°C, 400°C, 600°C, 800°C, 1000°C for 15 min at each target temperature followed by subsequent cooling was studied. Results: Amalgam restoration was resistant and intact even at 1000°C, whereas GIC and composite restoration are identifiable till 600°C, the residual cavity preparation leaves a clue for narrowing down the spectrum of identification. |
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ONLINE ONLY ARTICLES - CASE REPORTS |
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Compound composite odontoma |
p. 162 |
G Girish, Radhika M Bavle, Manish Kumar Singh, Sahana N Prasad DOI:10.4103/0973-029X.180982 PMID:27194882The term odontoma has been used as a descriptor for any tumor of odontogenic origin. It is a growth in which both epithelial and mesenchymal cells exhibits complete differentiation. Odontomas are considered as hamartomas rather than true neoplasm. They are usually discovered on routine radiographic examination. Odontomas, according to the World Health Organization, are classified into complex odontoma and compound odontomas. The present paper reports a case of compound composite odontomas. |
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Fibrosarcoma of maxilla: A rare case report
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p. 162 |
Sandhya Shrivastava, Sushruth K Nayak, Prachi Nayak, Sourabh Sahu DOI:10.4103/0973-029X.180983 PMID:27194883Fibrosarcoma is a malignant tumor of fibroblasts. At one time, it was considered one of the most common soft tissue sarcomas. However, the diagnosis of fibrosarcoma is made much less frequently today because of the recognition and separate classification of other spindle cell lesions that have similar microscopic features. Of all the fibrosarcomas occurring in humans, only 0.05% occur in the head and neck region. Here, we present a case of 22-year-old female patient with the swelling on the left anterior aspect of the face. Histopathologically, the lesion was diagnosed as fibrosarcoma and immunohistochemically, the lesional cells showed positivity for vimentin. |
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Unusual presentation of squamous cell carcinoma in young female patient: A case report and review of literature |
p. 163 |
Jasbir Kaur, Anantpreet Singh, Rohit Chopra DOI:10.4103/0973-029X.180984 PMID:27194884Oral squamous cell carcinoma is the most common "malignant neoplasm" of epithelial origin usually affecting individuals over 50 years of age. It is rare in patients aged <40 years old. This report describes a case of squamous cell carcinoma involving anterior mandibular alveolar region in a 17-year-old female patient, with no history of deleterious habits. This report focuses on etiological factors, diagnosis and prognosis related to the case. |
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Dentinogenic ghost cell tumor |
p. 163 |
Sweety Sagarmal Bafna, Tabita Joy, Jagdish Vishnu Tupkari, Jayant Shivaji Landge DOI:10.4103/0973-029X.180985 PMID:27194885Dentinogenic ghost cell tumor (DGCT) is a rare, odontogenic neoplasm which is considered to be a solid variant of calcifying odontogenic cyst (COC) with locally aggressive behavior. It accounts for only 2-14% of all COCs. To the best of our knowledge, only 88 cases of DGCT have been reported in the literature from 1968 to 2014. Herewith, we report a case of DGCT in a 68-year-old male patient with clinical presentation as a soft tissue growth over alveolar ridge and histopathologically characterized by ameloblastomatous epithelium, abundance of eosinophilic material and ghost cells.
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Role of inflammation in developmental odontogenic pathosis |
p. 164 |
Sandeep S Gupta, Devi C Shetty, Aadithya B Urs, P Nainani DOI:10.4103/0973-029X.180986 PMID:27194886Periapical infection in the primary tooth may lead to periapical abscess, granuloma, radicular cyst and even osteomyelitis. The infection in primary teeth can also affect the developing successor teeth leading to hypomineralization, hypoplasia, arrest of tooth development, regional odontodysplasia, delayed eruption etc. The purpose of this article is to report a case of malformed permanent tooth in relation to overlying infected deciduous teeth. The probable role of inflammation in pathogenesis of the present condition is also being discussed. |
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Alveolar rhabdomyosarcoma of maxilla |
p. 164 |
Anuradha Ananthaneni, Puneeth Horatti Kuberappa, G Vijay Srinivas, Mohammad Asif Kiresur DOI:10.4103/0973-029X.180987 PMID:27194887Rhabdomyosarcoma (RMS), a malignant neoplasm of skeletal muscle origin, is the most common soft tissue sarcoma seen in childhood and adolescence. The most frequent site is the head and neck accounting for 40% of all cases and other involved sites are genitourinary tract, retroperitoneum, and to a lesser extent, the extremities. RMS is relatively uncommon in the oral cavity and the involvement of the jaws is extremely rare. Here, we report a case of 50-year-old female with oral RMS involving maxillary alveolar region with clinical, radiological, histopathological and immunohistochemical findings.
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