Sample size of the study
The sample size was calculated at a significance level of 0.05 with statistical power of 90% and an effect size of 0.307. The analysis was performed using the G*Powers software program (version 3.1.9.6), which required a sample size of 96 teeth. In order to account for possible exclusions, the sample size was increased to 116 teeth. Three patients who did not attend follow-up appointments were excluded from the study (Fig. Flow-chart of the study design