Department of Orthodontics, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, China.
Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China.
Int Orthod. 2024 Dec;22(4):100918. doi: 10.1016/j.ortho.2024.100918. Epub 2024 Sep 5.
Premature loss of first permanent molars is a common occurrence in clinical practice, leading to abnormal occlusion and inefficient mastication for patients. This case report presented the orthodontic retreatment of a 32-year-old female patient who suffered from premature loss of mandibular bilateral first molars. The mesial tipping of the mandibular second molars led to an occlusal interference, resulting in a clockwise rotation of the lower jaw and an anterior open bite (AOB). We achieved long-distance molar mesialization using clear aligners with Albert cantilever arms. After 42 months of treatment, the patient's occlusion and facial profile significantly improved. The cantilever combined with the cleat aligner treatment has been clinically effective for the protraction of mandibular posterior teeth, extending the field of application of clear aligners.
第一恒磨牙早失在临床实践中较为常见，会导致患者咬合异常和咀嚼效率降低。本病例报告介绍了一位 32 岁女性患者的正畸复发治疗，该患者因下颌双侧第一恒磨牙早失。下颌第二磨牙的近中倾斜导致咬合干扰，导致下颌顺时针旋转和前牙开颌（AOB）。我们使用带有 Albert 卡臂的透明牙套实现了磨牙远移。经过 42 个月的治疗，患者的咬合和面部轮廓得到了显著改善。悬臂与扣板联合治疗对下颌后牙的牵引具有临床效果，扩展了透明牙套的应用范围。
