Background:Removal of impacted third molars is the most common oral surgical procedure. Many investigators have questioned the necessity of removal in patients who are free of symptoms or associated pathologies.Aim:The aim of this retrospective study was to evaluate the incidence of caries on distal aspect of mandibular second molars in patients referred for corresponding third molar assessment and to identify its association with angular position and depth of the impacted mandibular third molars based on the classification of Pell and Gregory.Methodology:Records of 150 patients with impacted third molar presenting to the Department of Oral and Maxillofacial Surgery, Sri Rajiv Gandhi College of Dental Sciences and Hospital, were assessed retrospectively. The radiographic angulation and depth of mandibular third molar impaction were determined and compared to determine the relationship with incidence of caries on the distal surface of the second molar.Results:According to this study results, 37.5% cases show caries on the distal aspect of mandibular second molars. The incidence of caries with mesioangular impacted third molars was 55%. A majority of these mesioangular cases were Level B and Class I as per the Pell and Gregory classification.Conclusion:The prophylactic extraction of mandibular third molars is indicated if the angulation is between 30° and 70° and is justified by incidence of distal caries in the second molars.

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Background: Evaluation of existing oral health services showed that it is predominantly urban oriented, mostly curative in nature and accessible mainly to small a part of population, i.e., privileged few. Periodontal diseases are more prevalent in a rural population than the urban population. The socio demographic profile is highly contrasting between the urban and rural population. It is essential to know whether these sociodemographic factors influence periodontal disease by comparing periodontal status of urban and rural population. Objective: The objective of the study is to assess and compare the periodontal status and treatment needs of rural and urban population in Tumkur district. Materials and Methods: A cross-sectional study based on the World Health Organization (WHO) guidelines. The sample consisted of 1500 subjects among which 750 subjects were selected from the rural population and 750 from urban population of Tumkur district. The data was collected by modified WHO oral health assessment form and clinical examination was conducted by using CPITN C probe. Results: It was found that the urban population had better periodontal health than rural population and this relationship was statistically significant (P < 0.05). Conclusion: India is a country with a population having diverse culture, life style and religious beliefs which might influence the health status of the individuals significantly. Hence, it is necessary to conduct such surveys in different parts of the country and develop a strategy to improve the periodontal status of the population as a whole.

Background: The mucous membrane of the maxillary sinus is very sensitive to foreign bodies and infections. Any triggering may lead to mucous membrane thickening (MMT). Residual bone thickness (RBT) is the remaining bone apical to the periodontal defect until the floor of the maxillary sinus acts as a barrier for the periodontal infections to reach the sinus. The aim of our current study was to evaluate the minimal RBT to prevent periodontal infection to reach Schneiderian membrane using cone-beam computed tomography (CBCT). Materials and Methods: In this descriptive study, 144 maxillary sinus exposure records of 100 patients were collected retrospectively. Patients with minimum one sinus exposure were considered. MMT and RBT were calculated with the CBCT assistance. Statistical analysis was done using Mann–Whitney U-test, Kruskal–Wallis and Chi-square test. ( P < 0.05) was considered as statistically significant. Results: Significant difference ( P < 0.001) was observed in MMT among three RBT groups. Significantly, higher mean MMT was observed with <2 mm and 2–4 mm RBT groups. The prevalence of MMT with >4 mm group is less (7%) compared to <2 mm group and 2–4 mm RBT groups (91.2% and 90.2%, respectively). Furthermore, there is no significant difference in MMT between angular and furcation defects ( P = 0.890). Conclusion: Probability of MMT was increased if RBT is <4 mm. Early detection and prompt periodontal treatments associated with regenerative procedures can be instituted wherever possible to improve RBT and to reduce MMT. Further, microbiological studies are required to confirm the analysis.

Purpose: To assess the effectiveness of calcium sodium phosphosilicate in reducing dentin hypersensitivity compared to other dentin tubule occluding molecules. Methods: A structured research question was formulated, and an electronic search of available literature was carried out via PubMed, Google Scholar, and Scopus. A hand search as well as a gray literature search were also carried out. The search produced a total of 67 articles. Of these, only eight articles were eligible to be included in our review. Risk of bias and study quality were checked using Cochrane tool. The review was registered in The International Prospective Register of Systematic Reviews (PROSPERO) under registration number CRD42018096200. Results: The results show a reduction in dentin hypersensitivity with calcium sodium phosphosilicate compared to many other molecules. However, nanohydroxyapatite showed a better desensitizing effect compared to Novamin. Conclusion: According to the available evidence, 5 % calcium sodium phosphosilicate containing toothpaste is more effective reducing dentin hypersensitivity compared to many other dentinal tubule occluding molecules.