ABSTRACT
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.
ABSTRACT
BACKGROUND: Complete microbial eradication from the root canal and 3-dimensional obturation of the canal space are necessary for an efficient root canal procedure. AIM: The current research was conducted to assess the antimicrobial effectiveness of herbal root canal irrigants and Chlorhexidine against Enterococcus faecalis. MATERIALS AND METHODS: The brain heart infusion (BHI) broth was used to grow the E. faecalis (ATCC) bacterial culture overnight before it was inoculated onto Mueller-Hinton agar plates. Agar-well diffusion was used to measure antibacterial inhibition. Respective propolis, Triphala, aloe vera, and chlorhexidine irrigants were added to the appropriate wells in agar plates and incubated for 24 hours at 37°C. Each well's bacterial inhibition zone was measured and recorded. Statistics were used to tabulate and analyze the results. RESULTS: Chlorhexidine indicated the maximum inhibitory zone against E. faecalis, subsequently propolis and Triphala, and the lowest by A. vera extract. CONCLUSION: Propolis, Triphala, and aloe vera were tested herbal remedies that demonstrated an inhibitory zone against E. faecalis. These irrigants are therefore, suitable for use as root canal irrigating solutions.
