Sampson W J, Sims M R
J Morphol. 1977 Oct;154(1):115-31. doi: 10.1002/jmor.1051540108.
The arrangement and distribution of oxytalan fibres in Australian marsupials has not previously been reported. Periodontal tissues of wombat, wallaby, possum, and marsupial mouse were examined to ascertain oxytalan fibre organization. Despite adaptation of the marsupial masticatory apparatus to different diets the oxytalan fibre organization in the periodontal ligament shows a basic pattern which corresponds with that reported in other animals. The oxytalan system forms a continuous meshwork of fine, branching fibres which completely invests each tooth root and connects adjacent teeth. Thick ribbon-like apico-occlusally orientated oxytalan fibres, thought to form by the coalescence of thinner fibres, are restricted to the periodontal ligament. The oxytalan fibres are embedded in cementum and attached to blood vessels in the pariodontal ligament. Oxytalan fibres do not insert into alveolar bone. Histological evidence indicates functional remodelling of the oxytalan fibre system in continuously erupting teeth.
此前尚未有关于澳大利亚有袋类动物中耐酸纤维的排列和分布的报道。对袋熊、沙袋鼠、负鼠和有袋小鼠的牙周组织进行了检查，以确定耐酸纤维的组织结构。尽管有袋类动物的咀嚼器官适应了不同的饮食，但牙周韧带中的耐酸纤维组织呈现出一种基本模式，与其他动物中报道的模式相符。耐酸纤维系统形成了一个由细小分支纤维组成的连续网络，完全包裹着每个牙根并连接相邻的牙齿。厚的带状耐酸纤维沿根尖向咬合方向排列，被认为是由较细的纤维合并形成的，仅限于牙周韧带。耐酸纤维嵌入牙骨质并附着于牙周韧带中的血管。耐酸纤维不插入牙槽骨。组织学证据表明，在持续萌出的牙齿中，耐酸纤维系统存在功能重塑。
