Hamamci Nihal, Başaran Güvenç, Sahin Semra
Department of Orthodontics, Faculty of Dentistry, Dicle University, Diyarbakir 21280, Turkey.
Angle Orthod. 2006 May;76(3):527-32. doi: 10.1043/0003-3219(2006)076[0527:NCOAAS]2.0.CO;2.
This case report presents an adult skeletal Class III and open-bite malocclusion case treated without surgical intervention using fixed edgewise technique, reverse headgear, and Class III and anterior box elastics. The patient was a 16-year-old Turkish female who had completed her growth and development. She had a four mm open bite, maxillary retrognathia, a crossbite in the anterior and left posterior, and hypoplasia of the maxillary laterals. In addition, the patient's first molars had previously been extracted because of caries, and extraction spaces were present. We applied a Roth edgewise appliance and a reverse headgear to be used at night only for the first six months. The objective in using a reverse headgear was to displace the maxillary teeth toward the mesial and to rotate the maxilla in a clockwise direction. In the mandible, we retracted the mandibular incisors and canine teeth and moved the second molars mesially toward the first molar extraction space. There would thus be no need for any prosthetic restoration in the mandible. At the end of treatment, we obtained a Class I dental relationship, an ideal occlusion relationship, and an esthetic dental and facial relationship. Treatment of the patient was completed in 20 months.
本病例报告展示了一例成年骨骼Ⅲ类错颌伴开颌畸形病例，采用固定方丝弓技术、头帽颏兜以及Ⅲ类和前牙箱形弹力牵引，未进行手术干预。患者为一名16岁的土耳其女性，生长发育已完成。她有4毫米的开颌、上颌后缩、前牙及左侧后牙反颌，上颌侧切牙发育不全。此外，患者的第一磨牙因龋齿先前已拔除，存在拔牙间隙。最初六个月，我们仅在夜间使用Roth方丝弓矫治器和头帽颏兜。使用头帽颏兜的目的是使上颌牙齿向近中移动，并使上颌顺时针旋转。在下颌，我们内收下颌切牙和尖牙，并将第二磨牙向近中移动至第一磨牙拔牙间隙。这样下颌就无需进行任何修复治疗。治疗结束时，我们获得了Ⅰ类牙关系、理想的咬合关系以及美观的牙颌面关系。患者的治疗在20个月内完成。
