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Ⅲ类错畸形是一种与遗传及发育相关的颌面畸形,随生长呈加重趋势。在儿童生长发育过程中,适时、适当地应用矫形力进行上颌前牵引治疗,可以矫治上颌发育不足产生的骨性Ⅲ类错畸形,改善上颌骨发育,获得较理想的面型。但多年以来,正畸医师在其治疗时机的选择,联合快速腭扩展的疗效评价,支抗及长期稳定性评价等方面,一直存在较大的争议。本文仅就近年来的相关研究进展作一综述。
Class Ⅲ malformations Malformations is a kind of genetic and development-related maxillofacial deformities, with the growing trend was aggravating. In the growth and development of children, timely and appropriate application of orthopedic force for the treatment of maxillary anterior traction can correct skeletal Class Ⅲ malocclusion caused by maxillary hypoplasia, improve the maxillary development, to obtain the desired shape. However, for many years, there has been much controversy among orthodontists in terms of the timing of their treatment, the efficacy evaluation combined with rapid palatal expansion, and the evaluation of anchorage and long-term stability. This article reviews the progress of related research in recent years.