牙龈厚度与上前牙唇侧骨板厚度的相关性研究

摘要

Objective:To study the relationship between gingival thickness(GT)and the underlying alveolar bone thickness(BT)in maxillary anterior region and the distance from cemento-enamel junction(CEJ)to alveolar crest.Methods:30 young volunteers with healthy gingiva were included.GT was measured at 2mm below the CEJ,buccal BT were measured at 3 locations:2,4 and 6 mm below the alveolar crest respectively,the distance from CEJ to alveolar crest were measured by CBCT and clinical direct measure respectively. Results:The correlation coefficient (r)values between GT and BT at 2,4 and 6 mm below alveolar crest were 0.493,0.383 and 0.342 (P <0.001 )respectively,the r value between GT and the distance from CEJ to alveolar crest was -0.21 3(P <0.01 ).No statistically significant difference was observed between CBCT and clinical measurements(t =-0.521 ,P =0.603).Conclusion:There is positive correlation between GT and BT at 2,4 and 6 mm below alveolar crest and negative relation between GT and the distance from CEJ to alveolar crest.%目的：测量分析上前牙牙龈厚度与唇侧骨板厚度及牙槽嵴顶到釉牙骨质界距离的相关性。方法：对30位青年受试者用间接显影法进行 CBCT 扫描，测量并记录以下数据并进行统计分析：龈缘下2 mm 牙龈厚度，牙槽嵴顶下2、4、6 mm 骨板厚度，牙槽嵴顶到釉牙骨质界的距离。CBCT 测量的准确性用直接测量法进行检测。结果：牙龈厚度与牙槽嵴顶下2、4、6 mm 处骨板厚度相关系数（r）分别为0．493、0．383、0．342（P ＜0．001），牙龈厚度与牙槽嵴顶至釉牙骨质界距离相关系数（r）为－0．213（P ＜0．01）。CBCT 扫描法测量与直接测量法之间差异无统计学意义（t ＝－0．521，P ＝0．603）结论：上前牙唇侧中央牙龈厚度与对应牙槽骨骨板厚度正相关，与牙槽嵴顶到釉牙骨质界的距离呈负相关。