Vasiliadis L, Darling A I, Levers B G
Arch Oral Biol. 1983;28(7):645-9. doi: 10.1016/0003-9969(83)90013-4.
In low-power photomicrographs of ground sections of canine teeth, the amount of sclerosis increased with age linearly and was not markedly affected by the function of the tooth or external stimuli encountered during life. The pattern of distribution was similar in all teeth. Sclerosis started in the apical dentine adjacent to the cementum and extended coronally and towards the root canal, with increasing age. In the plane transverse to the long axis of the root, sclerosis appeared first at the mesial and distal sides so that the sclerotic zones formed a butterfly shape.
在犬齿磨片的低倍显微照片中，牙本质硬化程度随年龄呈线性增加，且不受牙齿功能或生活中所遇外部刺激的显著影响。所有牙齿的硬化分布模式相似。随着年龄增长，硬化始于靠近牙骨质的根尖牙本质，并向冠方和根管方向扩展。在与牙根长轴垂直的平面上，硬化首先出现在近中侧和远中侧，使得硬化区形成蝴蝶状。
