Angle Orthod. 2024 Mar 1;94(2):247-257. doi: 10.2319/070323-462.1.
Inadequate maxillary incisor display can negatively impact facial esthetics. Various treatment options exist depending on the underlying cause and severity of the condition. Skeletal anchorage was used to extrude the maxillary dentition and rotate the mandible backward, enhancing visibility of the maxillary incisors. An extrusion assembly was introduced to achieve orthodontic extrusion. Use of bite raisers and interarch elastics was also discussed. Treatment results demonstrated successful achievement of the treatment goals. In addition to optimal occlusion, the patient's facial profile improved with increased lip fullness. There was an increase in vertical facial height, and maxillary incisor display was significantly improved, resulting in a more pleasant smile. Two-year postretention records evidenced the stability of total arch extrusion to improve maxillary incisor display.
上颌切牙显露不足会对面部美观产生负面影响。根据病因和病情的严重程度,有多种治疗选择。本病例采用了骨骼支抗来实现上颌牙列的整体远中移动和下颌的逆时针旋转,从而增加上颌切牙的显露度。通过使用牙齿转矩转矩移动器来实现牙齿的整体远中移动。同时还讨论了使用颌垫和上下颌橡皮圈的效果。治疗结果显示成功达到了治疗目标。除了获得良好的咬合关系外,患者的面型也得到了改善,唇饱满度增加。面型的垂直高度增加,上颌切牙的显露度明显改善,笑容更加美观。两年的保持期记录显示,全牙弓的整体远中移动能够稳定地改善上颌切牙的显露度。