Results
A total of 20 patients with a mean age of 8 ± 2.49 years were included in the SSC group (n = 24) and ZC group (n = 24). Two patients (6 teeth) were lost to follow-up and one case was lost due to decementation of the ZC at 13th month. Forty permanent first molars of 17 patients (53% girls and 47% boys) were available for evaluation throughout the 18-month follow-up. The intra-examiner reliability for determining gingival health was 0.88 and 0.87, respectively, and the inter-examiner reliability was 0.87.