标题：直丝弓矫治技术在下颌歪斜中的应用

      作者：李洪，林伯杰，梁晶    (湛江中心人民医院口腔科，广东 湛江 524000)

      卷次： 2018年29卷15期

      【摘要】 目的 探讨下颌歪斜应用直丝弓矫治技术治疗的临床效果。方法 回顾性分析2014年7月至2017年7月期间在湛江中心人民医院口腔科接受治疗的42例下颌歪斜患者的诊疗情况。所有患者均应用直丝弓矫治技术治疗，分别于矫治前后测量22例替牙期患者和20例恒牙列期患者的髁突高度、前后径、内外径，下颌支高度，髁突内、外突点距离，下颌角点距离，髁突最大横截面积，髁突前、后斜面长度和髁突前、后斜面倾斜角。结果 治疗前，替牙期患者偏斜侧的髁突前斜面长度[(6.75±1.01) mm]和倾斜角[(54.20±4.17)°]均小于对侧[(7.03±0.96) mm和(55.23±2.61)°]，差异均有统计学意义(P<0.05)；治疗后，偏斜侧和对侧的各项测量结果相比差异均无统计学意义(P>0.05)，而对侧治疗后的髁突前斜面长度[(6.92±1.06) mm]和倾斜角[(55.08±2.20)°]均小于治疗前，差异有统计学意义(P<0.05)；治疗前，恒牙列期患者偏斜侧的髁突高度[(20.25±1.02) mm]、髁突内外径[(18.30±2.16) mm]和下颌支高度[(56.16±2.78) mm]均小于对侧[(22.21±2.23) mm、(19.94±1.75) mm和(58.85±3.37) mm]，髁突后斜面长度[(8.41±0.79) mm]和倾斜角[(49.46±2.15)°]均大于对侧[(7.10±1.01) mm和(47.15±2.54)°]，差异均有统计学意义(P<0.05)；治疗后，偏斜侧和对侧的各项测量结果比较差异均无统计学意义(P>0.05)。结论 下颌歪斜应用直丝弓矫治技术治疗，操作便捷，可明显改善患者面部外形，疗效显著，对于替牙期和恒牙列期患者均适用。
      【关键词】 下颌歪斜；直丝弓矫治技术；矫治
      【中图分类号】 R782.2+3 【文献标识码】 A 【文章编号】 1003—6350（2018）15—2112—03

Application of straight wire appliance in mandibular deviation.
LI Hong, LIN Bo-jie, LIANG Jing. Department ofStomatology, Zhanjiang People's Central Hospital, Zhanjiang 524000, Guangdong, CHINA
【Abstract】 Objective To investigate the clinical effect of straight wire appliance in treating mandibular devia-tion. Methods A retrospective analysis was conducted on the diagnosis and treatment of 42 cases of mandibular devia-tion treated in Department of Stomatology, Zhanjiang People's Central Hospital from July 2014 to July 2017. All patientswere treated with straight wire appliance. The condyle height, front and back diameter, internal and external diameter,the height of the mandibular branch, the distance of the inner condyle and exodus, the distance of the mandibular angle,the maximum cross section of condyle, the length of the anterior and posterior oblique condyle and the angle of the ante-rior and posterior oblique surface of the condyle were measured in 22 patients in mixed dentition period and 20 cases ofpermanent dentition period. Results Before treatment, the length and inclination of the anterior slope of the condyle inpatients of mixed dentition period were (6.75±1.01) mm and (54.20±4.17)°on the tilted side versus (7.03±0.96) mm and(55.23±2.61)°on the contralateral side (P<0.05), while there was no statistically significant difference after treatment (P>0.05). The length (6.92±1.06) mm and inclination (55.08±2.20)°of the anterior slope of the condyle after treatment wereall significantly smaller than those before treatment (P<0.05). Before treatment, the condyle height, internal and externaldiameter of condyle, and the height of the mandibular branch in patients of permanent dentition period were (20.25±1.02) mm, (18.30±2.16) mm, and (56.16±2.78) mm on the tilted side versus (22.21±2.23) mm, (19.94±1.75) mm and(58.85±3.37) mm on the contralateral side, and the length of posterior condyle and inclination were (8.41±0.79) mm,(49.46±2.15)°versus (7.10±1.01) mm and (47.15±2.54)°on the contralateral side (P<0.05). There was no significant dif-ference in the indexes between the tilted side and the contralateral side after treatment (P>0.05). Conclusion Treatmentof mandibular deviation by straight wire appliance is simple, convenient and effective, which is suitable for the patientsof mixed dentition period and permanent dentition period. It can obviously improve the facial appearance of patients andis worthy of clinical promotion.
      【Key words】 Mandibular deviation; Straight wire appliance; Correction·论 著·doi:10.3969/j.issn.1003-6350.2018.15.012基金项目：广东省湛江市科技计划项目(编号：2017B01206)