The Need Of Root Canal Treatment After Coronectomy In Mandibular Third Molars

The study enrolled 24 patients with written and verbal consent, out of which 15 were females and 9 were males aged between 18-30 years, with a mean age of males 24 ± 2.6 years and females 23.5 ± 2.8 years. Ethical approval was taken from the ethical review board of Altamash Institute of Dental Medicine with IRB No: AIDM/ERC/12/2022/04.

A total of 24 impacted mandibular teeth from 24 Patients with close proximity to IAN diagnosed based on radiographs and evaluation on the criteria of Howe and Poyton4 were selected for the purpose of this study. The timeline of the study was between January 2021 till January 2022.

The estimated sample size calculated for the study was 12 (6 participants in each group) which was raised to minimum of 24 (12 participants in each group). The calculations were performed using 12.5% as a proportion of infection in the control group and 87.5% as the proportion of infection in experimentation group from the study published by Sencimen et al.1 The software used for the sample size estimation was STATA 13.0 using "pearson's chi-squared test for two-samples proportions test". The following parameters were considered:

Alpha = 0.05 Power = 0.8 Delta = 0.75 Proportions of control group = 0.125 (12.5%) Proportions of Experimental group = 0.875 (87.5%) Considering the high lost to followup cases into account the sample size was raised to 24 participants with one tooth per individual. (ANNEXURE-I)

Patients were diagnosed and then referred to the Oral Maxillofacial department of Altamash Institute of Dental Medicine. Twenty-four patients with 24 impacted mandibular third molars were equally divided into a control group and a study group. Twelve patients in the study group had their root canal treatment after coronectomies while the other half, the control group only had their coronectomies done without any further procedure performed.