Читать книгу Feline Dentistry - Jan Bellows - Страница 42
1.19 Composition 1.19.1 Enamel
ОглавлениеThe exterior surface of the healthy crown is covered by a thin layer of enamel, a hard inorganic substance (96% inorganic) formed by ameloblasts within the tooth bud before eruption. A study found that the enamel thickness in most cat teeth ranges from <0.1 to 0.3 mm. In dogs, the range for most teeth was <0.1 to 0.6 mm whereas in humans, the enamel on occlusal tables is usually 1–2 mm thick. Enamel when damaged is incapable of repair once the tooth has erupted.