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目的:探讨唇倾排齐弓丝在临床治疗中唇倾并排齐下前牙的效率和效果。方法:临床筛选36例(19例女性,17例男性)适应病例,分为两组:唇倾弓丝组和镍钛丝排齐组。按照唇倾弓丝组的排齐时间计算,分阶段留取牙颌石膏模型,并拍摄术前术后头颅定位侧位片。分别测量石膏模型尖牙宽度,磨牙宽度和牙弓宽度。同时在侧位片上测量术前术后的下前牙与下颌平面的倾斜角度。以α=0.05为基准,采用Stata统计软件对上述测量数据进行显著性比较分析。结果:唇倾弓丝完成唇倾并排齐下前牙的时间显著性少于镍钛丝排齐组,唇倾弓丝的排齐效率为0.106 mm/d,镍钛丝的排齐效率为0.047 mm/d。模型测量和侧位片测量表明,唇倾弓丝对于尖牙宽度,磨牙宽度和牙弓宽度和下前牙与下颌平面夹角的改变较镍钛丝排齐更显著。结论:与镍钛丝排齐相比,唇倾弓丝唇倾并排齐下前牙的效率更好,临床操作更简便。
Objective: To investigate the efficiency and effect of lip-alignment archwire in the treatment of anterior teeth in the clinical treatment. Methods: Thirty-six cases (19 women and 17 males) were screened for clinical application. The patients were divided into two groups: lip-lipped group and nickel-titanium lined group. According to the alignment time of the lip-lined arch group, the model of the maxillofacial gypsum was retained in stages and the skull positioning lateral radiographs were taken before surgery. The gypsum model cantilever width, molar width and arch width were measured. At the same time in the lateral radiographs measured preoperative and postoperative lower anterior teeth and mandibular plane tilt angle. Taking α = 0.05 as a benchmark, Stata statistical software was used to make significant comparative analysis of the above measured data. Results: The time of finishing the lip incision and alignment of the anterior teeth was less than that of the NiTi wires, the alignment efficiency of the lip-arch wire was 0.106 mm / d, the alignment efficiency of NiTi wire was 0.047 mm / d. The measurement of the model and the lateral radiographs show that the change of lip incision is more significant than that of NiTi wire for canine width, molar width and dental arch width and the angle between lower anterior and mandibular planes. Conclusion: Compared with the alignment of NiTi wire, the efficiency of the anterior teeth is better when the lips of lips are lined up and aligned, and the clinical operation is more convenient.