摘要
目的探讨上颌第二前磨牙与第一磨牙间(U56)及下颌第一磨牙与第二磨牙间(L67),颊侧牙龈乳头尖到牙槽嵴顶距离在不同年龄段及男女性别之间的差异性,研究牙龈乳头尖能否作为微种植钉植入的软组织解剖标志。方法选取多层螺旋CT(MSCT)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,每组22例,测量颊侧牙龈乳头尖到牙槽嵴顶的距离,并对测量结果进行统计学分析。结果上颌第二前磨牙与第一磨牙间及下颌第一磨牙与第二磨牙间,颊侧牙龈乳头尖到牙槽嵴顶的距离:(1)两部位牙龈乳头尖到牙槽嵴顶的距离较为恒定,约4.2 mm;(2)青少年组与成年组之间,在各水平的颊侧牙龈乳头尖到牙槽嵴顶的距离差异无统计学意义(P>0.05);(3)男性组与女性组之间,在各水平的颊侧牙龈乳头尖到牙槽嵴顶的距离异无统计学意义(P>0.05)。结论在上颌第二前磨牙与第一磨牙间及下颌第一磨牙与第二磨牙间,颊侧牙龈乳头尖到牙槽嵴顶距离恒定,可以作为微种植钉植入的参考点。
Objective To measure the distance between the tip of interdental gingiva and alveolar crest （GC） in various age and different gender. Methods The sample consisted of 88 patients, which were scanned by Philips brilliance 64 CT for three-dimensional reconstruction. The subjects were divided into four groups, each of which contained 22 patients： groupAl： male adolescents; groupA2： female adolescents; group BI： male adults; group B2： female adults. The GC of U56 （between the maxillary second premolar and first molar） and L67 （between the mandibular first and second molar） were measured. Restflts GC： （1）Both U56 and L67 were about 4.2 ram. （2）There was no significant difference in age and gender （P 〉 0.05）. Conclusion In U56 and L67, the tip of intcrdental gingiva can serve as the reference point for miniscrew insertion.
出处
《中华口腔医学研究杂志（电子版）》
CAS
2014年第4期30-33,共4页
Chinese Journal of Stomatological Research(Electronic Edition)
基金
广东省科技计划(A002014004)
关键词
微种植钉
牙龈乳头
多层螺旋CT
Miniscrew
Interdental gingiva
Multi-slice spiral CT
