后牙纵折在临床上常见,本文就临床上常见的纵折的原因及如何预防加以分析。 1.临床资料 后牙纵折的发病年龄以30—49岁多见,此年龄段正值青壮年期,咀嚼力量大,且经多年使用的牙齿(牙合)面磨耗明显,形成不同程度的过高牙尖或过徒斜面,在咀嚼运动时受到较大的侧方(牙合)力时,易于纵折,从发病率看,无男女性别差异,左、右侧也无差异,但上、下颌相 Longitudinal fracture of the posterior teeth is common in clinical practice. This article analyzes the causes and how to prevent the longitudinal fractures that are common in clinic. 1. Clinical data Posterior longitudinal fold of the age of onset to 30-49 years of age more common, this age is positive adolescence, chewing power, and after years of use of the teeth (occlusal) surface wear significantly, to varying degrees Over-cuspidor or oversteer, chewing during exercise by the larger lateral (occlusal) force, easy longitudinal fold, from the incidence of view, no gender differences in men and women, left and right no difference, but on the , Jaw phase