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目的采用PAR指数对直丝弓与方丝弓矫治技术治疗青少年轻中度错畸形的效果进行评价。方法将48例轻中度错畸形(无严重骨性畸形)的青少年患者按治疗方法的不同分为2组。直丝弓组26例,采用直丝弓矫治技术治疗,方丝弓组22例,按照标准方丝弓矫治技术进行治疗。根据PAR指数的测量标准,对2组患者治疗前后的石膏模型进行PAR指数测量,评价其治疗效果,并对2组患者的治疗时间进行比较。结果治疗后直丝弓组后牙排列的各项PAR分值及PAR总分均低于方丝弓组(均P<0.05)。直丝弓组治疗时间为(17.8±1.3)个月,方丝弓组治疗时间为(22.5±2.1)个月,2组比较差异有统计学意义(P<0.05)。结论应用直丝弓矫治技术治疗青少年轻中度错畸形疗程短,矫治结果优于方丝弓矫治技术。
Objective To evaluate the effect of straight wire arch and square wire arch correction on mild to moderate malformation deformity in adolescents with PAR index. Methods 48 cases of mild to moderate malformation deformity (no serious bone deformity) of adolescent patients according to the different treatment methods are divided into two groups. Straight wire group of 26 cases, the treatment of straight wire arch correction, square arch group 22 cases, according to the standard square wire arch correction techniques for treatment. According to the measurement standard of PAR index, the PAR index of gypsum model before and after treatment was measured in two groups to evaluate the therapeutic effect, and the treatment time of two groups of patients was compared. Results After treatment, the average PAR score and PAR score of straight arch group were lower than those of square arch group (all P <0.05). The treatment time of straight silk group was (17.8 ± 1.3) months, that of square silk group was (22.5 ± 2.1) months, the difference between the two groups was statistically significant (P <0.05). Conclusion Straight wire arch correction treatment of young patients with mild to moderate malformation deformity short course of treatment, orthodontic treatment is superior to square wire arch correction technique.