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Volume 9 Issue 3 (March, 2021)

Original Articles

Comparative analysis of efficacy of different final irrigating solutions on smear layer removal in apical third of root canal
Vinay Kumar K, Shushma G , Bharati R Doni

Background: The smear layer prevents the penetrations of intracanal medicament and sealers into the dentinal tubules. Hence, removal of smear layer improves the fluid-tight seal during obturation of the root canal systems. Aim of the study: To compare efficacy of different final irrigating solutions on smear layer removal in apical third of root canal. Materials and methods: The present study was conducted in the Department of Dentistry of Sapthagiri Institute of Medical Sciences & Research Institute, Bengaluru, Karnataka. This study was conducted in-vitro. A total of 60 single rooted human maxillary central incisors were selected for the study. They were decoronated to get the stable reference point and to standardize the root canal length of 14 mm. Patency of the root canal is established by passing a stainless steel number 15 K-file just beyond the apex of all canals. Working lengths were determined by subtracting 1 mm from that length. Canals were prepared using ProTaper rotary system. The amount of smear layer remaining on the surface of the root canal and dentinal tubules was scored according to a three score system developed by Torabinejad et al. Results: It was observed that the efficacy of saline was lowest as it was not able to remove smear layer. The most efficacious irrigating solution was MTAD. The results on comparison were statistically significant. Conclusion: Within the limitations of the present study, it can be concluded that MTAD is the most efficacious for smear removal in apical third of root canal. Keywords: smear layer, irrigating solution.

 
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