突面畸形是在我国人群中发病率很高的错畸形,由于其颜面形态表现各异、牙槽及颌骨结构复杂多样、发病因素多重叠加,因而对其分类与诊断一直是正畸领域的一大难题。本文作者在研究大量临床资料的基础上,将突面畸形分为牙槽性、骨源性、颌位性与混合性4大类,并针对各类突面畸形阐述其诊断依据、临床特征、发病机制及可能采取的治疗方案。 Sudden deformity is the highest incidence of miscarriage deformities in our population, due to the different facial morphology, complex and diverse alveolar and jaw structure, multiple superimposed disease factors, so its classification and diagnosis has been the field of orthodontics A big problem On the basis of a large amount of clinical data, the author classifies the sudden protuberances into four categories: alveolar, osteogenic, maxillofacial and mixed. According to the clinical diagnosis, clinical features, Pathogenesis and possible treatment options.