SOST and periodontitis: This study revealed that the GCF sclerostin levels are higher in patients with SIII-GC and SIII-GB than in individuals with gingival health, consistent with the findings of Chatzopoulos et al,1 Rezaei Esfahrood et al,11 Balli et al,2 and Dheeraj et al.19 Yakar et al20 demonstrated that the GCF sclerostin levels between the periodontitis group and healthy participants had no statistically significant difference.