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目的观察下颌前突Ⅲ类患者分别于术前、术后进行正畸的效果。方法将入诊医院口腔科的下颌前突Ⅲ类患者86例,随机分为观察组和对照组,每组43例。观察组采用正畸、正颌手术、正畸的顺序进行治疗,对照组单纯使用正颌手术进行治疗,观察比较2组患者上牙槽座角(SNA)、下牙槽座角(SNB)及疗效稳定性。结果治疗后,观察组SNA、SNB数值均显著优于对照组(P<0.01);观察组畸形复发率为2.33%,明显低于对照组的13.95%(P<0.01)。结论下颌前突Ⅲ类患者进行常规正颌手术的同时采用术前、术后正畸具有较好疗效,可改善患者SNA、SNB数值,且畸形复发率低。
Objective To observe the effect of orthodontic treatment in patients with mandibular protrusion type Ⅲ before and after operation. Methods Totally 86 patients with mandibular protrusion Ⅲ in the department of dentistry were randomly divided into observation group and control group, with 43 cases in each group. The observation group was treated with orthodontics, orthognathic surgery and orthodontic treatment. The control group was treated with orthognathic surgery alone. The SNA and SNB of the two groups were compared and analyzed. Efficacy of stability. Results After treatment, the values of SNA and SNB in the observation group were significantly better than those in the control group (P <0.01). The recurrence rate of the observation group was 2.33%, significantly lower than that of the control group (13.95%, P <0.01). Conclusions The patients with mandibular protrusion type Ⅲ undergoing orthognathic surgery should be treated with orthodontics before and after surgery, which can improve the SNA and SNB values and have a low recurrence rate.