上切牙拔除矫治设计的临床探讨

Orthodontic treatment of malocclusions by upper incisors extraction

目的探讨上切牙拔除矫治的适应症和矫治效果。方法选择上前牙或上颌前突、后牙为中性、轻度远中或完全远中关系的患者23例,拔除双侧上颌侧切牙或中切牙(有牙体或牙周病变者)。结果 23例患者上前牙或上颌前突畸形完全解除,前牙覆牙合、覆盖正常,后牙呈中性或完全远中的尖窝关系,口型和面型显著改善。结论上前牙或上颌前突拔除上切牙矫治简单(支抗易控制)、快速、有效,值得临床推广应用。

Objective To investigate the indications and orthodontic effects of upper incisors extraction in treatment of malocclusions.Methods23 patients with dentoskeletal maxillary protrusion were treated with upper lateral incisors or central incisors（with dental or periodontal disease） extraction.When the treatment was finished,patients with upper central incisors eatraction had their upper lateral incisors restored with metal-porcelain crown to substitite for central incisors.All patients had their upper canines adjusted to imitate lateral incisors.ResultsAll the 23 cases gained satisfactory results.All facial profile improved,teeth lined up in order and anterior teeth gained normal overbite and overjet,occlusion perfect.ConclusionsUpper incisors extraction is an easy and effective choice for patients with dentoskeletal maxillary protrusion.