Chen Mu, Li Zheng-Ming, Liu Xue, Cai Bin, Wang Da-Wei, Feng Zhi-Cai
Associate professor, Department of Stomatology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong, China.
Professor, Department of Stomatology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong, China.
Am J Orthod Dentofacial Orthop. 2015 Apr;147(4):465-71. doi: 10.1016/j.ajodo.2014.11.029.
Our aim was to determine differences between the outcomes of treatment using microimplant anchorage compared with headgear anchorage in adult patients with bimaxillary protrusion treated with self-ligating brackets.
Thirty-one adult orthodontic patients (13 men, 18 women; age, 25.87 ± 3.37 years) who were diagnosed with bimaxillary protrusion were selected. All patients were treated with self-ligating brackets and maximum anchorage after extraction of 4 first premolars. Group 1 received microimplant anchorage, and group 2 received headgear. Lateral cephalometric radiographs were obtained before and after treatment. Differences in the skeletal and dental parameters between and within groups were analyzed.
No significant difference was observed in the mean treatment times between the groups (21.93 ± 3.10 vs 23.88 ± 2.68 months). There was no significant difference in skeletal measurements before or after treatment in patients who received microimplant anchorage. Patients who received headgear anchorage had an increase of the mandibular plane angle. The microimplant anchorage group had greater anterior tooth retraction and less maxillary molar mesialization than did the headgear group.
In both the anteroposterior and vertical directions, microimplant anchorage achieved better control than did the traditional headgear appliance during the treatment of bimaxillary protrusion.
我们的目的是确定在使用自锁托槽治疗的双颌前突成年患者中，使用微种植体支抗与头帽支抗治疗结果之间的差异。
选取31例诊断为双颌前突的成年正畸患者（男13例，女18例；年龄25.87±3.37岁）。所有患者均在拔除4颗第一前磨牙后使用自锁托槽并采用最大支抗进行治疗。第1组采用微种植体支抗，第2组采用头帽支抗。在治疗前后拍摄头颅侧位X线片。分析组间和组内骨骼及牙齿参数的差异。
两组间平均治疗时间无显著差异（21.93±3.10个月 vs 23.88±2.68个月）。接受微种植体支抗治疗的患者治疗前后骨骼测量无显著差异。接受头帽支抗治疗的患者下颌平面角增大。微种植体支抗组比头帽组有更大的前牙内收和更小的上颌磨牙近中移动。
在双颌前突的治疗中，在前后向和垂直方向上，微种植体支抗比传统头帽矫治器能实现更好的控制。
