Comparison of double-plate appliance and facemask therapy in treating Class III malocclusions
Comparison of double-plate appliance and facemask therapy in treating Class III malocclusions
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DOI：
10.1016/j.ajodo.2003.09.035
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发表时间：
2004-12-01
影响因子：
3
通讯作者：
Yüksel, S
中科院分区：
文献类型：
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作者：
Üçem, TT;Üçüncü, N;Yüksel, S
本研究的目的是比较双板矫治器(DPA)和面罩(FM)矫治骨性III类错牙合的效果。数据基于28名患有骨骼和牙齿III类错(牙合)的受试者治疗前和治疗后的头颅侧位片。第一组(女孩7人，男孩7人；平均年龄10岁3个月)，每个受试者都佩戴有2个III类弹力的DPA，除吃饭外，日夜施加350~400g的力。第二组(女7例，男7例；平均年龄10岁5个月)，每个受试者戴戴Delaie型FM，加装可拆卸口腔矫治器，总作用力600g，每天佩戴约16h。未经治疗的对照组(6名女孩，8名男孩；平均年龄9岁8个月)根据矢状骨和牙齿的分类与治疗组相匹配。评估了13个角度测量和14个线性测量。治疗组ANB角增加，上颌差减少，与对照组比较，差异有统计学意义(P<；0.05)。FM组ANB角和SNA角的增加明显大于DPA组(P<；0.05)。FM组面部下部高度和平均高度的增加与其他组相比差异有统计学意义(P<；0.05)。两个治疗组的覆盖均显著增加(P<；.001)，但DPA组的覆盖明显大于FM组(P<；.05)。DPA组上颌切牙前伸、下颌切牙后移与其他两组比较，差异有统计学意义(P<；0.05)。
The aim of this study was to compare the effects of the double-plate appliance (DPA) and the facemask (FM) in treating skeletal Class III malocclusions. Data were based on the pretreatment and posttreatment lateral cephalograms of 28 subjects with skeletal and dental Class III malocclusions. In the first group (7 girls, 7 boys; mean age, 10 years 3 months), each subject wore a DPA with 2 Class III elastics, which exerted a force of 350-400 g day and night except for meals. In the second group (7 girls, 7 boys; mean age, 10 years 5 months), each subject wore a Delaire-type FM with a removable intraoral appliance with a total force of 600 g. The patients were instructed to wear the appliance approximately 16 hours a day. An untreated control group (6 girls, 8 boys; mean age, 9 years 8 months) was formed that matched the treatment groups according to sagittal skeletal and dental classifications. Thirteen angular and 14 linear measurements were evaluated. The increase in ANB angle and the decrease in maxillomandibular differential in the treated groups showed significant differences compared with the control group (P < .05). The increases in ANB and SNA angles in the FM group were significantly greater than in the DPA group (P < .05). The increases in lower facial height and Me-ANS in the FM group were significantly different compared with the other groups (P < .05). The overjet increased significantly in both treatment groups (P < .001), but, in the DPA group, overjet was significantly greater than in the FM group (P < .05). Protrusion of the maxillary incisors and retrusion of the mandibular incisors in the DPA group showed significant differences compared with the other groups (P < .05).