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目的依据锥形束CT(cone-beam CT,CBCT)图像分析新疆维吾尔族成人下颌前牙区颌骨形态。方法牙齿缺失维吾尔族成年患者80例,行CBCT检查后测量下颌前牙区颌骨外形、唇舌侧宽度和近、远中距离。结果 80例下颌前牙区颌骨唇侧形态均呈凹形,且最凹点均位于下颌骨上1/3和中1/3;下颌前牙区颌骨舌侧形态多样,尖牙中凸形所占比率最高(47.50%)、其次为平坦形(22.50%),中切牙和侧切牙中平坦形所占比率最高(40.00%、36.25%)、其次为凸形(30.00%、31.25%);左、右侧尖牙、侧切牙及中切牙颌骨舌侧宽度在下颌骨下缘的皮质骨上缘最宽,其次为根尖处及颌骨中1/2,牙槽嵴顶处最窄,但差异均无统计学意义(P>0.05);男性左、右侧尖牙牙槽嵴顶[(8.72±0.13)、(8.57±0.16)mm]和根尖[(9.76±0.31)、(9.68±0.33)mm]颌骨唇舌侧宽度高于女性[(8.10±0.09)、(8.13±0.10)mm;(8.81±0.30)、(8.71±0.30)mm](P<0.05);左、右侧尖牙、侧切牙、中切牙牙槽嵴顶的近中及远中距离为4.52~6.83mm,其中尖牙近中及远中距离最大,侧切牙次之,中切牙最小,但差异无统计学意义(P>0.05);男性右侧下颌尖牙区远中距[(6.89±0.07)mm]、近中距[(6.52±0.08)mm]均大于女性[(6.69±0.09)、(6.18±0.10)mm](P<0.05)。结论维吾尔族成年人下颌骨前牙唇侧形态均为凹形,舌侧形态多样,唇舌侧牙槽骨较薄。
Objective To analyze the morphology of mandibular anterior mandibular anterior teeth of Uygur nationality in Xinjiang based on cone-beam CT (CBCT) images. Methods Eighty adult Uygur patients with tooth loss were enrolled in this study. The mandibular anterior mandibular contour, lingual lingual width, proximal and distal distance were measured after CBCT examination. Results The shape of mandibular labial side of mandibular anterior teeth in 80 cases was concave, and the most concave points were located on the upper 1/3 and middle 1/3 of the mandible. The morphology of the lingual side of the mandible anterior mandible was diverse, (47.50%), followed by flat (22.50%). The ratio of flat shape in central incisor and lateral incisor was the highest (40.00%, 36.25%), followed by convex (30.00%, 31.25% ). The left and right fangs, lateral incisors and maxillary incisors had the widest lingual width at the lower edge of the cortical bone, followed by the apical and maxilla half, the alveolar crest (8.72 ± 0.13), (8.57 ± 0.16) mm] and apical crest [(9.76 ± 0.31) mm] in the left and right canines, respectively, but the difference was not statistically significant (P> 0.05) (9.68 ± 0.33) mm]. The width of the labial and lingual lingual was higher in the jaw than in the female [(8.10 ± 0.09) and (8.13 ± 0.10) mm, (8.81 ± 0.30) and (8.71 ± 0.30) mm respectively , The right canine, lateral incisors, incisors alveolar crest near and far in the distance of 4.52 ~ 6.83mm, including maxillary and distal maxillary maxillary incisors, followed by lateral incisors, the smallest incisors, but There was no significant difference between the two groups (P> 0.05). The distance between the mandibular canines of the right male was (6.89 ± 0.07) mm [ 0.08) mm] were significantly larger than those in women [(6.69 ± 0.09), (6.18 ± 0.10) mm] (P <0.05). Conclusion The shape of the labial mandibular anterior lip of the Uygur adults are concave, the morphology of the lingual side is diverse, and the lingual alveolar bone is thin.