下颌前牙区牙槽骨骨壁厚度及牙根长轴的测量

发布时间：2019-02-16 11:12

【摘要】：目的:应用锥形束CT(CBCT)测量下颌前牙唇舌侧骨壁厚度,以及牙根长轴相对牙槽突长轴的位置关系,为即刻种植提供临床指导。方法:选取54例中国汉族正常鉭个体的CBCT图像,测量下颌前牙釉牙骨质界(CEJ)下1、3、5、7 mm处唇、舌侧骨壁厚度,以及牙根长轴相对牙槽突长轴的位置关系,比较左右侧同名牙、每个牙位唇舌侧骨壁厚度的差异以及不同性别之间唇舌侧骨壁厚度及牙根长轴与牙槽突长轴夹角的差异。结果:下颌前牙左右侧同名牙相应骨壁厚度差异无统计学意义,除下尖牙CEJ下1 mm处的唇舌侧骨壁厚度差异无统计学意义外,下中切牙和下侧切牙CEJ下1 mm处唇侧比舌侧骨壁厚,其余部位舌侧比唇侧骨壁厚(P0.05)。不同性别间唇舌侧骨壁厚度的差异无统计学意义(P0.05),但下颌尖牙处男性牙根长轴与牙槽突长轴的夹角小于女性(P=0.018)。结论:测定了中国人汉族正常鉭人群下颌前牙区不同高度水平唇舌侧骨壁厚度,为成人即刻种植提供了参考和依据。
[Abstract]:Objective: to measure the thickness of lip and tongue wall of mandibular anterior teeth by conical bundle CT (CBCT) and the relationship between root long axis and alveolar long axis in order to provide clinical guidance for immediate implantation. Methods: the CBCT images of 54 normal tantalum samples from Chinese Han nationality were used to measure the thickness of the labial, lingual bone wall and the position of the long axis of root relative to the long axis of alveolar process of mandibular anterior enamel cementum under (CEJ). The thickness of the lip and tongue wall and the angle between the long axis of root and the long axis of alveolar process were compared between the left and right teeth of the same name, the difference of the thickness of the bone wall of the lip and tongue side in each tooth position and the difference of the thickness of the bone wall of the lip and tongue side between the two sexes. Results: there was no significant difference in the thickness of bone wall between left and right mandibular anterior teeth with the same name, except that there was no significant difference in the thickness of bone wall of lip and tongue at 1 mm under CEJ of lower canine teeth. The lower central incisor and the lower incisor were thicker than the lingual bone wall at 1 mm under CEJ, and the other parts were thicker than the labial bone wall (P0.05). There was no significant difference in the thickness of lip and tongue between sexes (P0.05), but the angle between male root long axis and alveolar long axis in mandibular canine was lower than that in female (P0. 018). Conclusion: the thickness of lip and tongue wall at different heights in the mandibular anterior teeth of the normal tantalum population of Chinese Han nationality was measured, which provided a reference and basis for immediate implantation in adults.
【作者单位】：郑州大学第一附属医院口腔医学中心;
【基金】：国家“十二·五”科技攻关项目2012ZX10004905-004-002 河南省基础与前沿技术研究项目132300410271
【分类号】：R783.6

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