@article{oai:mdu.repo.nii.ac.jp:00000190, author = {恩田, 千爾 and 峯村, 隆一 and 正木, 岳馬}, issue = {1}, journal = {松本歯学}, month = {Jun}, note = {application/pdf, A case of a three-rooted lower first premolar almost without wear was observed. Results are as follows. 1. In this case, the length, mesio-distal diameter and labio-lingual diameter of the crown were longer than those of the normal premolar in the Japanese. 2. The length overall was little shorter and length of the root was much shorter than those of the normal premolar. 3. When roots were measured from the separating point, the mesio-buccal root was the longest and the disto-buccal root was the shortest. 4. This tooth had three root canals. They were separated from the middl of the root.}, pages = {54--59}, title = {3根を有する下顎第1小臼歯の1例}, volume = {4}, year = {1978} }