Andersson L, Blomlöf L, Lindskog S, Feiglin B, Hammarström L
Int J Oral Surg. 1984 Oct;13(5):423-31. doi: 10.1016/s0300-9785(84)80069-1.
Ankylosis is a serious condition for the affected teeth as such teeth form part of the remodelling process of the alveolar bone and are therefore progressively resorbed. There are, however, very few clinical studies on tooth ankylosis and the reason for this may be due to the difficulties that are encountered in the diagnosis of minor areas of ankylosis. In the present study, the radiographs, percussion sound and mobility of experimentally extracted and replanted monkey incisors were compared with a morphometric histological study of ankylosis. Ankylotic areas were evident radiographically when the ankylosis was located on the proximal surfaces of the root, but were not evident when the ankylosis occurred on the lingual and labial surfaces. The percussion sound was dull and the mobility normal in all non-ankylotic teeth as well as in those teeth which histologically demonstrated ankylosis on less than 10% of the root surface. When the ankylosis affected 10-20% of the root surface, 2 out of 4 teeth changed their percussion sound from dull to high and these teeth no longer possessed normal mobility. When more than 20% of the root surface was affected with ankylosis, the percussion sound was characteristically high in all teeth and no mobility was present.
牙齿粘连对患牙来说是一种严重情况，因为此类牙齿构成牙槽骨重塑过程的一部分，因此会逐渐被吸收。然而，关于牙齿粘连的临床研究非常少，原因可能是在诊断轻微粘连区域时会遇到困难。在本研究中，将实验性拔除并再植的猴切牙的X线片、叩诊音和松动度与牙齿粘连的形态计量组织学研究进行了比较。当粘连位于牙根近中面时，X线片上粘连区域明显，但当粘连发生在舌面和唇面时则不明显。所有未粘连的牙齿以及组织学显示牙根表面粘连面积小于10%的牙齿，叩诊音均为浊音，松动度正常。当粘连累及牙根表面的10% - 20%时，4颗牙齿中有2颗的叩诊音由浊音变为高音，且这些牙齿不再具有正常的松动度。当超过20%的牙根表面发生粘连时，所有牙齿的叩诊音均为典型的高音，且无松动。
