乳替牙期前牙反的早期矫治原则

Treatment strategy of anterior cross-bite in the primary and mixed dentition

前牙反是乳替牙期常见的错畸形,是安氏Ⅲ类错畸形的主要症状之一,也是儿童口腔医生常常需要面对的临床问题。安氏Ⅲ类错前牙反有骨性和非骨性之分,其鉴别诊断对前牙反的治疗及预后判断具有重要意义。乳牙期常用的前牙反治疗技术包括乳尖牙调、咬翘法、下颌联冠斜面导板、上颌垫舌簧矫治器及不良习惯去除。上颌前方牵引治疗是替牙期最为常用的前牙反矫治技术。随着上下颌骨生长发育的不断进行,前牙反可能会出现加重或复发。

Anterior cross-bite is a common malocclusion in the primary and mixed dentition. It is one of the major symptoms of Class Ⅲ malocclusion. Anterior cross-bite in the Class Ⅲ malocclusion is classified as skeletal or non-skeletal,for which differential diagnosis is of vital importance for the treatment selection and prognosis judgment. The treatment techniques for anterior cross-bite in the primary dentition include occlusal adjustment of primary canines,mandibular inclined plate,maxillary appliance with bite palate and lingual spring,and correction of bad habit. The maxillary protraction therapy is the most common treatment selection for anterior cross-bite in the mixed dentition. Anterior cross-bite can sometimes worsen or relapse because of the continuing growth of the mandible.