Crown root ratio in first and second mandibular premolars.
1971
M el-Hadary
UI
MeSH Term
Description
Entries
D001641
Bicuspid
One of the eight permanent teeth, two on either side in each jaw, between the canines (CUSPID) and the molars (MOLAR), serving for grinding and crushing food. The upper have two cusps (bicuspid) but the lower have one to three. (Jablonski, Dictionary of Dentistry, 1992, p822)
Premolar,Bicuspids,Premolars
D014070
Tooth
One of a set of bone-like structures in the mouth used for biting and chewing.
Teeth
D014092
Tooth Root
The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)