287例漢族成人頦孔區(qū)錐形束CT測量分析
[Abstract]:Objective: to measure and analyze the structures of mandibular mental foramen, accessory mental foramen and anterior ring of mandibular nerve by cone-beam computed tomographic CT, and to provide reference for the operation of mental foramen. Methods: CBCT images of 287 Han nationality patients from January 2015 to August 2015 in Xiangya Hospital Stomatology Center were collected and the anatomical structure of mental foramen was analyzed. The data were analyzed by SPSS17.0 software package. Results: most of the mental foramina were located between the root side of the second premolars and the mandibular premolars (60.80%, 30.14%, respectively), the incidence of the accessory mental foramen was 4.88, mostly located in the root side of the second premolars of the mandible, above and far away from the mental foramen. The incidence of mandibular anterior ring was 89.20 and the length was (1.99 鹵1.39) mm, and the distance from the root tip of mandibular second premolar to the anterior ring or canal of mandibular nerve was (5.21 鹵2.50) mm. Conclusion: accessory mental foramen can be found in the mental foramen region, the occurrence rate of anterior ring of mandibular nerve in Chinese Han nationality is higher and the variation is large, which should be paid more attention to in the operation of mental foramen region.
【作者單位】: 中南大學(xué)湘雅醫(yī)院口腔醫(yī)學(xué)中心;
【分類號】:R816.98;R782
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