恒齿 meaning in English
[生理学] dentes permanente; permanent tooth
Examples
- Tooth spacing occurs if there is excessive space in the jawbone . treatment varies from case to case
牙齿排列出现空隙，最主要的原因是恒齿的体积跟发育中的颌骨不配合。 - Bring the fragment of the fractured tooth . root or bone injury can be detected by professional dental staff only
因为碰伤的部份可能在表面看不到的位置，例如牙根；而且，乳齿受创可能伤害形成中的恒齿。 - Tooth crowding occurs if there is inadequate room for all permanent teeth to erupt or when the permanent premolars erupt and the growth of the jawbone stablizes
牙齿排列不整齐由于恒齿的体积比乳齿大，恒齿长出时可能不够空位，引致牙齿排列参差不齐。 - The permanent incisor will assume normal position and it is not necessary to extract the mobile primary incisor if there is enough room for the permanent incisor . delayed eruption of permanent teeth
一般来说，乳齿会因为牙根收缩而变得松动，跟着自然脱落，这是正常现象，不会影响恒齿的生长，所以不一定要拔掉松动的乳齿。 - Tooth discolouration can lead to intrinsic or extrinsic stains . intrinsic stains may be caused by tetracycline stain , excessive fluoride intake , pulp degeneration after tooth trauma and the presence of metallic restorative materials such as silver amalgam
外在变色是由于食物中的色素附在牙面上，形成斑渍，只要洗牙便可以清除这类斑渍。内在变色的其中一个原因是在乳齿或恒齿的形成过程中，受到一些药物例如四环素的影响。