Özet:

Endodontic therapy is performed to clean the root canal system, alleviate pain and eliminate infection from the tooth. Root canal obturation serves the main purpose of impeding the traffic of fluids from the periradicular tissues or saliva into the canal as well as bacteria and their viru- lence factors and antigens from the canal to the periradicular tissues. Ideally, the filling material should reach to the apex of the root, without extending into periapical tissues or other neighboring structures. Aim: The aim of the present study is to correlate the taper and preparation size with  sealer extrusion in lower mandibular molars. Materials and method: A total of 50  patients were retrospectively reviewed from June 2020 March 2021 and  included in the study. Demographic details like age, gender and dental status of all the patients were recorded. All the data were entered in the excel sheet. Data was analysed by SPSS software. Chi square test was used to find association between the study variables, where P<0.05 was considered statistically significant. Result: A total of 50 patients of the 16 to 65 year age group were examined among them 52% were males and 48% were females and the most commonly affected age group by root canal treatment sealer extrusion belonging to 18 to 36 years of age. The most commonly used obturation technique was matched taper single cone techniques with 50% and sealer used was resin sealer (64%). Matched taper single cone technique was the most common type of obturation technique among 18-36 years with 24.8% whereas warm vertical condensation was higher among 36-45 years. This was found to be statistically significant (p=0.01) Conclusion: During endodontic treatment, it is impervious for an operator to avoid iatrogenic accidents therefore, great caution should be taken during the root canal treatment and always be exercised to avoid the undue enlargement of root canals. From this study we can conclude that the correlation between taper size and types of sealer used for obturation was 6% and the most commonly used sealer was  resin based sealer and zinc oxide based sealer  

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