牙隐裂是一种临床上常见而又容易被忽略的疾病,其危害不容忽视。牙隐裂又叫不全牙裂或牙微裂,指牙冠表面的非生理性细小裂纹。是临床上较常见的牙体硬组织非龋性疾病,裂为原发性,发生在未经治疗的活髓牙上。牙隐裂的裂纹常渗入到牙本质结构,是引起牙痛的原因之一[1],是导致牙齿劈裂的 Tooth occlusion is a clinically common and easily overlooked diseases, the harm can not be ignored. Defective tooth also known as incomplete crack or tooth crack, refers to the surface of the non-small dental crown crack. Clinically, the more common dental hard tissue non-carious disease, split as primary, occurred in untreated live pulp teeth. Cranial crack often cracks into the dentin structure, is one of the causes of toothache [1], is the cause of tooth splitting