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目的应用螺旋CT测量上颌骨14-24牙位种植相关的唇侧和腭侧骨壁厚度,为上颌美学区种植提供参考数据。方法应用64排容积CT对60例患者上颌骨14-24,共480颗牙齿的牙骨质釉质界(cement-enamel junction,CEJ)根方3mm处的唇侧和腭侧骨壁在与牙体长轴垂直方向上的厚度进行测量。结果中切牙组与侧切牙组在CEJ3mm处唇侧骨板厚度及腭侧骨板厚度均无显著性差异(P>0.05),分别与尖牙组及第一前磨牙组比较,唇侧骨板厚度及腭侧骨板厚度均具有统计学差异(P<0.001);50岁以上年龄组的CEJ3mm处唇侧骨板厚度明显小于其他小年龄组。结论中切牙与侧切牙在CEJ3mm唇侧骨板、腭侧骨板较尖牙及第一前磨牙菲薄,尤其对于50岁以上人群,唇侧骨板变薄趋势更加明显,对于不同牙位种植前应进行详细的评估。
Objective To measure the thickness of the labial and palatal bone associated with 14-24 dental implantation in the maxilla by spiral CT and to provide reference data for the planting of the maxillary aesthetic area. Methods Sixty-four cases of cementum-enamel junction (CEJ) at the root of 3 mm in 60 patients with maxillary 14-24, 480 teeth were examined by 64-row volumetric CT. The thickness of the major axis in the vertical direction is measured. Results There was no significant difference in the thickness of the labial plate and the thickness of the palatal plate between the incisors and the lateral incisors at CEJ3mm (P> 0.05). Compared with the canine group and the first premolar group, (P <0.001). The thickness of labial plate in CEJ3mm at 50 years of age was significantly less than that of other small age groups. Conclusions The incisors and lateral incisors of the CEJ3mm labial and palatal plates are thinner than the canines and the first premolar, especially for the over-50-year-old population. The thinning tendency of the labial plate becomes more obvious. For the different dental implantations Should be detailed before the assessment.