Yousefian Joseph, Trimble Douglas, Folkman Gary
Am J Orthod Dentofacial Orthop. 2006 Dec;130(6):771-8. doi: 10.1016/j.ajodo.2005.07.016.
This case report illustrates a treatment option for managing a skeletal Class II relationship with a Class II Division 2 malocclusion and impinging overbite. The patient's maxillary first premolars were extracted during unsuccessful orthodontic treatment at age 15. These extractions and the retraction of the maxillary anterior teeth during space closure worsened the facial profile deficiency caused by the original facial skeletal Class II discrepancies. During the retreatment described here, the second premolars were moved into the place of the previously extracted first premolars. The opened spaces at the second premolars were then restored with implant-supported restorations. Lingual brackets were used to correct the severe overbite. This approach created sufficient overjet to correct the Class II skeletal relationship with bisagittal mandibular advancement osteotomy. Reconstruction of the skeletal and occlusal relationships resulted in a more desirable facial profile for this patient.
本病例报告阐述了一种治疗方案，用于处理伴有Ⅱ类2分类错牙合及深覆牙合的骨性Ⅱ类错牙合关系。患者在15岁正畸治疗失败期间拔除了上颌第一前磨牙。这些拔牙操作以及关闭间隙过程中上颌前牙的内收，使原本由面部骨骼Ⅱ类差异导致的面部轮廓不足更加严重。在此处描述的再治疗过程中，将第二前磨牙移动到先前拔除的第一前磨牙的位置。然后用种植体支持的修复体修复第二前磨牙处的间隙。使用舌侧托槽来矫正严重的深覆牙合。这种方法产生了足够的覆盖，通过双侧下颌前徙截骨术来矫正Ⅱ类骨骼关系。骨骼和咬合关系的重建为该患者带来了更理想的面部轮廓。
