后牙颊舌向聚合度的测量及比较研究  

The Measurement and Comparative Study of Convergence Angles of the Posterior Teeth

作　　者：柳玉晓[1] 郭庆泰[2] 林先军[1] 

机构地区：[1]解放军88医院口腔科,山东泰安271000 [2]山东大学口腔医学院修复科

出　　处：《口腔医学研究》2004年第5期546-548,共3页Journal of Oral Science Research

摘　　要：目的 :测量 6 0副正常牙合牙列模型 ,获取后牙牙体颊舌向聚合度的正常值 ,并进行比较研究。方法 :选取 6 0副正常牙合牙列模型 ,以寒天印模材取模 ,超硬石膏灌注 ,对模型各牙位牙齿进行定点 ,转移模型各定点至坐标纸 ,测量、计算颊舌向聚合度 ,并比较它们之间的异同。结果 :1)得出后牙各牙位牙体颊舌向聚合度。 2 )上下同名牙相同方向聚合度均数经方差分析 ,有非常显著性差异。结论 :上下同名牙聚合度之间差异均较大。objective: To measure the convergence angles of posterior teeth, and comparing the convergence angles of the same named maxillary and mandibular teeth. Methods: 60 cases meeting the following requirements were strictly selected: 1) No defection, caries, filling or dental case on the teeth. 2) Good periodontal health. 3) integrated denture without deformed tooth. 4) No attrition. 5) No torsiversion malposition.After the cases were selected, impressions were taken, and then duplicate stone casts, and choose the points on the casts, transform the points to coordinate papers, construct the teeth models. To measure the B(Buccal)-L(Lingual) convergence angles of these teeth with assistant of computer and special tools, and statistic analysis were also made by SPSS software. Results: 1)The average convergence angles of each individual posterior tooth were acquired. 2) There are significant difference between the same named maxillary teeth and mandibular teeth(P<0.01). Conclusions: There are significant difference between the same named maxillary and mandibular teeth.

关 键 词：后牙 聚合度 测量 比较 

分 类 号：R783.3[医药卫生—口腔医学]