错[牙合]畸形患者颏孔区解剖的锥形束CT三维评估  

Three-dimensional evaluation of the anatomy of the mental foramen region by cone-beam CT in patients with malocclusion

作　　者：李杨杰 叶同虎 LI Yangjie;YE Tonghu(Department of Stomatology,The Fourth Affiliated Hospital of Nanjing Medical University,Nanjing,Jiangsu 211800,China)

机构地区：[1]南京医科大学第四附属医院口腔科,江苏南京211800

出　　处：《中国临床研究》2024年第12期1900-1904,共5页Chinese Journal of Clinical Research

摘　　要：目的调查骨性二类与三类错[牙合]畸形患者中下颌颏孔区的解剖结构差异。方法纳入2019年1月至2020年12月在南京医科大学附属口腔医院接受正颌手术256例患者的术前锥形束CT(CBCT)图像,对颏孔区的解剖结构进行分析。使用3D分析软件分析所有测量值。结果最终纳入来自247例患者的466个半下颌,总计244个左半颌及222个右半颌影像学数据。其中包含176个男性患者半颌和290个女性患者半颌,368个青年人半颌及98个非青年人半颌。纳入研究的左右半颌数量差异无统计学意义(P>0.05),女性多于男性患者,青年患者多于非青年患者(P<0.01)。骨性二类错[牙合]畸形135例,258个;骨性三类错[牙合]畸形112例,208个。骨性三类错[牙合]畸形患者的左、右侧下牙槽神经前环前伸长度[(2.31±1.70)mm,(2.22±1.36)mm]和下展长度[(7.67±2.93)mm,(7.66±2.76)mm]显著大于骨性二类错[牙合]畸形患者的左、右侧下牙槽神经前环前伸长度[(1.56±0.52)mm,(1.54±0.52)mm]和下展长度[(5.93±2.52)mm,(5.95±2.35)mm]。不同性别患者在上述指标中的差异亦有统计学意义(P<0.05)。不同年龄组患者部分指标的差异有统计学意义。结论不同类型、不同性别错[牙合]畸形患者的下牙槽神经前环及其他颏孔区解剖存在差异。正[牙合]手术时应予以足够重视。Objective To investigate the differences in anatomical structures of the mandibular mental foramen region in patients with bony class Ⅱ and class Ⅲ malocclusions.Methods Preoperative CBCT images of 256 patients who underwent orthognathic surgery at the Affiliated Stomatological Hospital of Nanjing Medical University from January 2019 to December 2020 were included in the study to analyse the anatomical structure of the mental foramen region.All measurements were analysed using 3D analysis software.Results Ultimately,466 hemimandibles from 247 patients were included,summing to 244 left and 222 right hemimandible imaging data,and including 176 male hemimandibles and 290 female hemimandibles,as well as 368 young adult and 98 non-young adult hemimandibles.There was no statistically significant difference in the number of left and right hemimandibles included in the study(P>0.05).The number of female patients exceeded male patients,and young adult patients outnumbered non-young adult patients(P<0.01).The anterior extension length of anterior loop of the inferior alveolar nerve on the right and left sides in patients with bony class Ⅲ malocclusion[(2.31±1.70)mm,(2.22±1.36)mm]and the stretch downward length[(7.67±2.93)mm,(7.66±2.76)mm]were significantly greater than those in patients with bony class Ⅱ malocclusion[(1.56±0.52)mm,(1.54±0.52)mm]and[(5.93±2.52)mm,(5.95±2.35)mm].There were also significant differences in the above indicators between patients of different genders(P<0.05).The differences of partial indexes among different age groups were statistically significant.Conclusion There are differences in the anatomy of the inferior alveolar nerve anterior loop of and other mental foraminal regions in patients with different types and genders of malocclusions.Sufficient attention should be paid during orthognathic surgery.

关 键 词：锥形束CT 下牙槽神经前环 颏孔 解剖结构 错[牙合]畸形 正[牙合]手术 

分 类 号：R782[医药卫生—口腔医学]