@article{oai:mdu.repo.nii.ac.jp:00000728,
 author = {恩田, 千爾 and 正木, 岳馬},
 issue = {2},
 journal = {松本歯学},
 month = {Aug},
 note = {application/pdf, The molars of Japanese patients were injected with India ink, decalcified, and cleared in order to determine the number of root canals, marrow canals and apical ramifications. The following results were obtained. 1) The largest number of root canals is seen in the maxillary first molar, followed by the maxillary second molar, mandibular first molar and mandibular second molar in this order. The large number of marrow canals and apical ramification in the mandibular second molar, followed by the maxillary first molar, complicates determination of the number of root canals in these teeth. 2) The number of root canal in the mandibular first molar is larger in the Japanese than in the Swiss. This may indicate the difference among different races. 3) The number of root canals in the maxillary first molar is larger in Japanese than in Swiss populations. 4) The mandibular second molar shows the most complex C-shaped root canal, which increases difficulty of treatment.},
 pages = {171--190},
 title = {大臼歯の根管の解剖},
 volume = {24},
 year = {1998}
}