The identification of the gingival phenotype and its relationship to periodontal health is essential for providing effective treatment. This study investigated the prevalence of different gingival phenotypes and how they relate to various factors such as crown shape, papilla height (PH), keratinized tissue width (KTW), and other potential risk factors. A total of 90 participants, including 53 women and 37 men, participated in the study. The gingival phenotype was classified as thin or thick based on how much the periodontal probe could pass through the buccal gingival margin. Clinical data, including supracrestal gingival height (SGH), crown width to length ratio, PH, and KTW, were all measured and compared. No significant differences were found between the gingival phenotypes regarding SGH, crown width/length ratio, or periodontal parameters (P > 0.05). However, individuals with rectangular crowns had higher papilla height compared to those with square crowns (P < 0.05). The distribution of crown shapes was similar, with a higher prevalence of thick gingival phenotypes found among Turkish participants. No significant correlation was found between gingival phenotype and crown shape, periodontal health, or papilla height. Thick phenotypes were associated with a larger KTW, and crown shape in the maxillary anterior region was a factor in papilla height.
