@article{oai:mdu.repo.nii.ac.jp:00000798,
 author = {岩崎, 浩 and 宮沢, 裕夫 and 小林, 茂夫},
 issue = {3},
 journal = {松本歯学},
 month = {Dec},
 note = {application/pdf, The objectives of the present study were to investigate the crown morphology of maxillary deciduous molars in Chinese children and to compare it with those previously reported for different races. The results were as follows: 1) Regarding the occlusal surface pattern of m^2, 78.8% showed type 4, 19.4% type 4-, and 1.8% type 3+B. As in previously studies, teeth with four cusps were the most frequenctly seen. The frequency of the occlusal surface pattern of m^1 was 40.5% type 2, 37.8% type 3M, 11.9% type 3H, 7.0% type 4-, and 2.8% type 4. As in previous Japanese studies, three cusps were most frequenctly seen for this tooth. 2) The frequency of Carabelli's cusp was 52.5% (pit: 47.5%, cusp: 5.0%) for m^2 and 17.6% for m^1, and all cusps were classified as showing rudimentary developmental state. 3) The respective frequency in m^2 and in m^1 of Protoconule was 43.8% and 2.9%, of Metaconule was 43.0% and 18.9%, of Mesial tubercle was 39.4% and 12.7%, and of Crista obliqua was 95.1% and 2.0%. Lunate ridge was seen in 9.5% of m^2. The frequency of Cingulum on m^1 was 16.5%.},
 pages = {260--282},
 title = {中国石家荘市小児の乳歯列形態 第三報 : 上顎乳臼歯歯冠形態の調査研究},
 volume = {22},
 year = {1996}
}