关键词: 牙周美学, 龈乳头缺陷, 上前牙, 牙周健康

Abstract: Objective　To evaluate the factors associated with the deficiency of gingival papillae between maxillary anterior teeth in clinical periodontal healthy young men of Han-nationality. Methods    A total of 121 gingival papillae between maxillary anterior teeth were selected from 26 clinical periodontal healthy young staffs and students of Han-nationality from Peking University School and Hospital of Stomatology from June to December 2019. Indexes were measured by standardized clinical photographs and Cone-beam CT images. The association between the indexes and the deficiency of gingival papillae was evaluated. Statistical analyses included t-test and Pearson′s correlation coefficient and so on. Results　The rate of complete filling of maxillary anterior gingival papilla was 87.6%（106/121） and the rate of deficiency was 12.4%（15/121），all of which were mild deficiency. When the distance from contact point to bone crest（CP-BC） was over 6 mm or the distance from contact point to proximal cemento-enamel junction（CP-pCEJ） was over 5 mm，deficiency appeared. There was a strong positive correlation between CP-BC and CP-pCEJ. The Pearson correlation coefficient was 0.910（P < 0.001），and the linear fitting coefficient was 1.01（R2 = 0.829）. For this kind of periodontal healthy people，there was no significant difference in interproximal distance between roots（RD） or the width of bone crest（BCW）when gingival papillae of maxillary anterior was completely filled or had mild deficiency. Conclusion    For the young men of Han-nationality without absoption of alveolar ridge，the rate of complete filling of maxillary anterior gingival papilla is relatively high，and the rate of deficiency is low，which is mainly associated with the position of the contact point in the direction of crown root.

Key words: periodontal aesthetics, deficiency of gingival papillae, maxillary anterior teeth, periodontal health