阳江地区成年人及青少年微种植钉常用植入部位牙根间距分析

Analysis of the Width of Interradicular Spaces for Miniscrew Insertion in Yangjiang Area

目的:测量阳江地区成年人及青少年上颌5、6间及下颌6、7间微种植钉植入部位的牙根间距,分析男女性别之间的差异性。为临床精准植入微种植钉,提供理论依据。方法:选取多层螺旋CT三维重建影像资料88例,分为青少年男性组、青少年女性组、成年男性组和成年女性组4组,各组病例数为22例,测量上颌5、6间及下颌6、7间,距离牙槽嵴顶分别为3mm、5mm、7mm水平的牙根间距,并对测量结果进行统计学分析分析。结果:上颌5、6间及下颌6、7间,距离牙槽嵴顶分别为3mm、5mm、7mm水平的牙根间距:上颌5、6间分别为(2.98±0.47)mm、(3.61±0.42)mm和(4.78±0.28)mm;下颌6、7间分别为(3.44±0.26)mm、(3.91±0.33)mm和(4.41±0.33)mm。青少年组与成年组之间,在各水平的牙根间距无统计学差异。男性与女性之间,在各水平的牙根间距无统计学差异。结论:在上颌5、6及下颌6、7间,牙根间距比较中,青少年与成人之间及男女之间无统计学差异;在上颌5、6及下颌6、7间植入微种植钉时,应尽量选择根方部位。

Objective： To measure the width of interradicular spaces （WD） and analyne the difference in age and sex. Methods： The sample consisted of 88 patients, who were scanned by Philips brilliance 64 CT for three-dimen- sional reconstruction. The subjects were divided into four groups, 22 patients for each： groupAl： male adolescents; groupA2： female adolescents; group BI： male adults; groupB2： female adults. We measured the WD of U56（ be- tween the maxillary second premolar and first molar） and L67 （between the mandibular first and second molar） at the height of 3, 5 and 7mm from the alveolar crest. Results： WD at the height of 3, 5 and 7mm from the alveolar crest： U56：2.98±0.47,3.61±0.42 and 4.78±0.28;L67：3.44±0.26,3.91±0.33 and 4.41±0.33. There was no significant difference in age and sex. Conclusion： With ence in WD of U56 and L67 . When inserting minscrews from the alveolar crest. respect to the age and sex, there was no significant differ- in U56 and L67, the position should be as far as possible