上颌中切牙牙根直径及根管管径与年龄的关系

A study on the relationship between the root diameter and the diameter of the root canal and the diameter of the root canal of the maxillary central incisors of Han nationality

目的探讨汉族人上颌中切牙牙根直径及根管管径与年龄的关系。方法 2014年11月~2015年11月间,在一家三甲医院数据库中选择420例汉族人的口腔锥形束CT资料,根据年龄将所有研究对象分为6个组别(8~12岁、13~17岁、18~22岁、23~27岁、28~32岁、33~37岁,每组70例,男女各15例。对所有研究对象上颌中切牙牙根直径及根管管径进行测量,取釉牙骨质界距根尖3/4处,分析上颌中切牙牙根直径及根管管径与年龄的关系,比较男女上颌中切牙牙根直径。结果男性与女性上颌中切牙牙根直径比较具有差异显著性(P<0.05);男性与女性上颌中切牙牙根管径比较具有差异显著性(P<0.05);男性与女性上颌中切牙牙根直径与牙根管径之比比较具有差异显著性(P<0.05);不同性别间上颌中切牙牙根直径与牙根管径之比与年龄具有一定的相关性(R^2=0.623,P<0.05)。结论汉族人上颌中切牙牙根直径及根管管径与年龄的变化具有相关性,且男性根管管径减小趋势比女性更高。

Objective To investigate the relationship between the root diameter and the diameter of the rootcanal and the diameter of the root canal of the maxillary central incisors of Han nationality. Methods November2014 to 2015 during November, select the database in a local three grade hospital in 420 cases of Hart nationality inCBCT image data as the research object, according to the age will be all of the subjects were divided into six （8-12years old, 13 to 17, 18 22, 23 to 27, 28 to 32, 33 to 37 years old）, 70 cases in each group, men and women, 15 casesin each group. Of all the research object of the maxillary central incisor root diameter and root pipe diameter weremeasured, take the cemento enamel junction from the apical 3/4, analysis of maxillary central incisor root diameterand root tube diameter and age, men and women of the maxillary central incisor root diameter. Results The menand women of the maxillary central incisor root diameter compared with significant difference （P〈0.05）; male andfemale maxillary central incisor root diameter compared with significant difference （P〈0.05）; male and femalemaxillary incisor root diameter and root diameter ratio compared with the difference significant （P〈0.05）; differentgenders maxillary central incisor root diameter and root diameter ratio and age has certain correlation （R2=0.623,P〈0.05）. Conclusion The root diameter and the diameter of root canal of maxillary central incisors of Hannationality were correlated with the age, and the trend of male root canal diameter was higher than that of female.