It can be concluded that the not uniformly distributed occlusal force produced from the larger axial gradient degree, the defect of dentition, and the abrasion of teeth, may be the important factors which cause wedge-shaped teeth defect.

• 研究结果说明，牙轴倾度增大、牙列不完整和牙齿磨损导致的（牙合）力异常分布，可能是楔状缺损形成和发展的主要因素。