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Aim: Present research was done to assess stress distribution in three different taper design preparation of root canal with the help of finite element analysis. Materials and Methods: Lower incisors teeth having single canals that were cleaned and shaped with the help of NeoEndo Flex Titanium (NiTi) rotary file and later three designs were created such as 4%, 6%, and 8% canal preparation taper. Cone beam computed tomography (CBCT) was done for all teeth and subjected to finite element analysis for stresses. The collected data were statistically analyzed. Results: Highest stress was found in the coronal followed by the middle and least in the apical part in all three designs. The highest stress value was found in enamel than dentin (MPa). The highest stress value was found with design 3 (8% taper) followed by designs 2 (6% taper) and 1 (4% taper) for enamel and dentin with either oblique or vertical stress loading. Conclusion: All canals preparation exhibited maximum enamel stress at the coronal load points compared to apical and middle portions. The stress increases with increase in canal tapering.

Aim: Present research was done to assess stress distribution in three different taper design preparation of root canal with the help of finite element analysis., Materials and Methods: Lower incisors teeth having single canals that were cleaned and shaped with the help of NeoEndo Flex Titanium (NiTi) rotary file and later three designs were created such as 4%, 6%, and 8% canal preparation taper. Cone beam computed tomography (CBCT) was done for all teeth and subjected to finite element analysis for stresses. The collected data were statistically analyzed., Results: Highest stress was found in the coronal followed by the middle and least in the apical part in all three designs. The highest stress value was found in enamel than dentin (MPa). The highest stress value was found with design 3 (8% taper) followed by designs 2 (6% taper) and 1 (4% taper) for enamel and dentin with either oblique or vertical stress loading., Conclusion: All canals preparation exhibited maximum enamel stress at the coronal load points compared to apical and middle portions. The stress increases with increase in canal tapering., Competing Interests: There are no conflicts of interest., (Copyright: © 2023 Journal of Pharmacy and Bioallied Sciences.)

Aim: The aim of this study was to assess the effectiveness of two various in-office newer desensitizing agents in reducing dentinal hypersensitivity in patients with mild-to-moderate sensitivity for a 1-month follow-up., Materials and Methods: Forty subjects with cervical dentin hypersensitivity (otherwise healthy patients) were included. A split-mouth, randomized clinical trial was conducted. A Visual Analog Scale (VAS) was used to record the initial sensitivity levels at the baseline visit. Each individual has been exposed to thermal (ethyl chloride spray) and evaporative (air blast) stimuli to elicit sensitivity. A single application of two different in-office desensitizing agents, Clinpro XT Varnish (3M ESPE, Minnesota, USA) and Shield Force Plus (Tokuyama Dental, Tokyo, Japan), was done. The sensitivity scores were recorded after the application of the desensitizing agent immediately, after 1 week, and after 1 month using both air and cold stimuli in the same manner as initially., Results: Mean VAS scores represent teeth that were more sensitive to cold stimuli compared to air blasts in both groups. For both stimuli at all-time intervals except baseline, there is a significant difference between CXT and SFP, with low mean VAS scores for CXT. Post hoc analysis revealed that in the CXT group, there is a significant difference in mean VAS score between pre-and postintervention at all-time intervals except between immediate and 1-week time intervals ( P < 0.001) but only at immediate and 1-week time intervals in SFP., Conclusion: Clinpro XT Varnish is more efficient compared to Shield Force Plus at all-time points irrespective of the stimuli after a 1-month follow-up., Competing Interests: There are no conflicts of interest., (Copyright: © 2023 Journal of Conservative Dentistry and Endodontics.)