350例上颌前磨牙Interstitial结节发生率的调查  

Interstitial tubercle in Chinese and Japanese young adults

作　　者：任羚[1] 孙大麟[1] 郭莲[1] 沈军[1] 岩井康智 椿井孝芳 东义景 

机构地区：[1]上海第二医科大学口腔医学院口腔解剖教研室,200011 [2]日本大阪齿科大学口腔解剖讲座

出　　处：《上海口腔医学》1997年第2期63-64,94,共3页Shanghai Journal of Stomatology

摘　　要：上颌第一、第二前磨牙咬面上，颊侧副沟与横副沟间边缘嵴肥厚呈结节状称Interstitial结节。作者对中、日两所医科大学生Interstitial结节的发生情况作了调查，结果如下：（1）上颌第一前磨牙Interstitial结节发生率在中日两组大学生中无差异，上颌第二前磨牙日方组发生率高于中方组；（2）Interstitial结节在上颌第一前磨牙发生率显著高于上颌第二前磨牙；（3）单侧发生多于双侧；（4）上颌第一前磨牙Interstitial结节在面近中的发生率显著大于远中；（5）上颌第二前磨牙中方组近远中发生率无差异，日方组近中发生率高于远中。A comparative study on the incidence of interstitial tubercle from standardizedstone casts of 160 Chinese and 190 Janpanese young adults,ages from 20-30. The followingresults were obtained: 1)No significant difference in the incidence of interstitial tubercle onmaxillary first premolar between Chinese and Japanese groups (P> 0. 05), but on maxillarysecond premolar, Japanese is higher than Chinese (P<0. 05) . 2)The incidence of interstitialtubercle on maxillary first premolar is higher than second premolar in two groups (P<0. 05).3 )The intestinal tubercle occurs in unilateral more frequently than in bilateral. 4)The inci-dence of maxillary first premolar in mesial of occlusal is higher than in distal. 5)No differencebetween mesial and distal on occlusal of maxillary second premolar in the Chinese group, andthe incidence in mesial is higher than in disal in the Japanese group.

关 键 词：Interstitial结节 上颌前磨牙 ■面 

分 类 号：R782.1[医药卫生—口腔医学]