下颌第二磨牙远中邻面龋危险因素研究

Analysis of the risk factors related to distal interproximal caries in the mandibular second molar

目的研究导致下颌第二磨牙远中邻面龋的危险因素。方法收集558例下颌第三磨牙拔除病例数据,将下颌第二磨牙远中邻面龋与下颌第三磨牙的阻生类型、患者性别、年龄以及牙位等变量之间进行Logistic回归分析。结果 558例下颌第三磨牙拔除病例中,120例出现远中邻面龋。下颌第三磨牙阻生类型中的Pell-Gregory牙合平面分类(P=0.00<0.01,OR=0.43<1)和Winter分类(P=0.00<0.01,OR=2.45>1)以及性别(P=0.00<0.01,OR=1.99>1)、年龄(P=0.00<0.01,OR=1.06>1)进入Logistic回归方程。结论下颌第三磨牙在下颌骨内的位置越高,近中倾斜的角度越大,越容易导致下颌第二磨牙远中邻面龋。年龄越大,下颌第二磨牙远中邻面龋发生率越高,男性较女性更容易发生第二磨牙远中邻面龋。

Objective The aim of this study was to study the risk factors related to distal interproximal caries in the mandibular second molar.Methods There were 558 mandibular third molars and six factors such as impaction types, gender,age and position（right or left）included in the study.Statistical analysis of Logistic regression were used.Results Distal interproximal caries occurred in 120 of 558 patients.Logistic regression analysis showed that distal interproximal caries is significantly related to the Pell-Gregory occlusal classification（P =0.00 0.01,OR =0.43 1）,the Winter＇s classification（P=0.00〈0.01,OR=2.45〉1）,gende（rP=0.000.01,OR=1.991）and age（P=0.00〈0.01,OR=1.06〉1）. Conclusion The more upper position in the mandibular bone and greater mesio-angular of the mandibular third molar, the more possible occur distal interproximal caries in the mandibular second molar.Gender and age were also risk factors related to distal interproximal caries in the mandibular second molar.