释义 |
deciduous tooth noun[ C ] anatomy specializeduk /dɪˌsɪdʒ.u.əs ˈtuːθ/ us /dɪˌsɪdʒ.u.əs ˈtuːθ/pluraldeciduous teethuk /dɪˌsɪdʒ.u.əs ˈtiːθ/ us /dɪˌsɪdʒ.u.əs ˈtiːθ/ one of the teeth of young children and some young animals that fall out and are replaced by permanent teeth: In humans, the first set of teeth usually appear between 6 and 24 months of age, there being 20 deciduous teeth in all. This is the period when the deciduous teeth are being shed, to be replaced by permanent adult teeth. Only the teeth from the adults are examined in this study, because deciduous teeth often lack age-accumulated indicators of diet and disease. An urge to chew is typical of young puppies as their set of deciduous teeth is shed. Problems could be seen even in the deciduous teeth of toddlers. 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
Synonyms
baby tooth milk tooth primary tooth Comparepermanent tooth |