| 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.
SMART Vocabulary: related words and phrases
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
|