骨性Ⅲ类错畸形可表现为上颌后缩、下颌前突或同时兼而有之,该类畸形上下颌骨及牙齿往往存在矢状向、垂直向及横向等三维方向的不调,矫治难度较大。本病例是一位具有生长发育潜力的恒牙列早期骨性Ⅲ类错畸形患儿,采用正畸治疗后,患者面型得到明显地改善,反得以纠正,磨牙及尖牙关系达到中性,矫治后保持两年,疗效稳定,现予以报道。一、病例资料1.基本情况:患者,男,11岁。主诉:地包天,要 Osteoid class Ⅲ malocclusion can be manifested as maxillary retrusion, mandibular protrusion or both at the same time, the deformity of the mandible and the teeth are often sagittal, vertical and horizontal three-dimensional direction of the non-conditioning, orthodontic More difficult. This case is a growth and development potential of early skeletal Class Ⅲ malocclusion Ⅲ malformation children, the use of orthodontic treatment, the patient’s face has been significantly improved, anti-Kui to be corrected, molars and canine to achieve the relationship Sex, orthodontic treatment for two years, the effect is stable, is to be reported. First, the case information 1 basic conditions: patients, male, 11 years old. Chief complaint: to the sky, want