| 词汇 | dentin |
| 语种 | 英语、汉语、英汉翻译、汉英翻译 |
| 释义 | dentin noun[ U ] anatomy mainly USspecialized(UK usuallydentine)uk /ˈden.tɪn/ us /ˈden.tɪn/ a hard substance containing calcium that forms the main part of a tooth and has enamel(= a shiny white substance) covering it: 象牙质（构成牙齿主体的坚硬含钙物质，表面覆盖白色牙釉质） When a cavity reaches the dentin, people may begin to feel some pain. Dentine accounts for about 90% of the tooth. Underneath your tooth's outer enamel and within the dentin is an area of soft tissue called the pulp. Attrition initially affects the enamel and, if unchecked, may proceed to the underlying dentin. Teeth become sensitive when the outer layer of enamel is eroded and the underlying dentin is exposed. The teeth baby tooth buck-toothed cementum centric cingulum coronal erupt interdental labially lingually mesially milk tooth molar odontoblast pulpal rictus snaggle-toothed snaggled through clenched teeth wisdom tooth |
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