Mergen John L, Southard Karin A, Dawson Deborah V, Fogle Laura L, Casko John S, Southard Thomas E
Department of Orthodontics, S-221 Dental Science Building, University of Iowa, Iowa City, IA 52242, USA.
Am J Orthod Dentofacial Orthop. 2004 Apr;125(4):457-62. doi: 10.1016/j.ajodo.2003.06.004.
The purpose of this study was to evaluate pretreatment and posttreatment soft tissue profiles of 4 groups of growing Class II Division 1 patients treated with fixed orthodontic appliances and headgear. One hundred patients were grouped according to the severity of their initial retrognathia and vertical skeletal status. Standardized pretreatment and posttreatment profile silhouettes of each patient were randomized and projected for scoring by panels of lay persons and orthodontic residents. Statistical analysis consisting of nonparametric procedures showed that (1) as the initial skeletal discrepancies between the 4 groups worsened, the initial profiles were judged to be more unattractive (P <.001); (2) there was no perceived difference in the final profiles between the 4 groups; and (3) significantly greater improvement was measured for those with greater initial skeletal discrepancies (P <.05). This study demonstrated that, with appropriate and timely treatment with fixed orthodontic appliances and headgear, growing Class II Division 1 patients can undergo significant profile improvement, and, on average, even those more severely affected can achieve profile improvement so that they can be judged as attractive as those initially less severely affected.
本研究的目的是评估4组使用固定正畸矫治器和头帽治疗的生长发育期安氏II类1分类患者治疗前和治疗后的软组织侧貌。100名患者根据其初始下颌后缩的严重程度和垂直骨骼状态进行分组。将每位患者标准化的治疗前和治疗后侧貌剪影随机排列，并由外行人小组和正畸住院医师进行评分。由非参数程序组成的统计分析表明：（1）随着4组之间初始骨骼差异的加剧，初始侧貌被判定为更不美观（P<.001）；（2）4组之间最终侧貌没有明显差异；（3）初始骨骼差异较大的患者测量到的改善显著更大（P<.05）。本研究表明，通过使用固定正畸矫治器和头帽进行适当及时的治疗，生长发育期安氏II类1分类患者的侧貌可以得到显著改善，并且平均而言，即使是那些受影响更严重的患者也可以实现侧貌改善，从而被判定为与最初受影响较轻的患者一样美观。
