Kajiwara T, Tanaka S, Goto S, Negoro T
Department of Orthodontics, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
Aichi Gakuin Daigaku Shigakkai Shi. 1990 Dec;28(4):1159-70.
Generally, prognathism has been just identified as a large overjet. However, for the purposes of treatment, it should be noticed that different facial types are included in this malocclution. Facial pattern is classified into 2 groups; dolico and brachio facial types. The dolico facial type is generally a high angle case. It has a weaker natural anchorage than the brachio facial type. Consequently, it has a downward component in its mandibular growth. The classification of the two different facial types of maxillary prognathism would influence orthodontic treatment. When deciding on the treatment, the differences between the two facial types--in type of anchorage, growth direction, and control of toothaxis--should be taken into account.
一般来说，前突一直仅被视为深覆盖。然而，就治疗而言，应注意到这种错牙合畸形包括不同的面部类型。面部形态分为两组：长面型和短面型。长面型通常是高角病例。与短面型相比，它的自然支抗较弱。因此，其下颌生长有向下的成分。上颌前突两种不同面部类型的分类会影响正畸治疗。在决定治疗方案时，应考虑两种面部类型在支抗类型、生长方向和牙轴控制方面的差异。
