TY  - JOUR
AU  - JIA, Rui-zhi
AU  - YANG, Dong-mei
AU  - SHANG, Jia-jian
PY  - 2017
TI  - Clinical study of root canal numbers in maxillary second primary molars
JO  - Journal of Prevention and Treatment for Stomatological Diseases
SN  - 2096-1456
SP  - 316
EP  - 319
VL  - 25
IS  - 5
AB  - ObjectiveTo investigate the root canal numbers of maxillary second primary molars.Methods216 maxillary second primary molars from 204 children aged 3-8 years old were selected. All the teeth need to do the root canal therapy. After opening the pulp chamber, the root canal were examined and determined with small size K file and 17% ethylene diaminetetraacetic acid (EDTA). Hand instruments were used for root canal preparation and then zinc-oxide iodoform paste was used for filling.Results216 maxillary second primary molars, 122 teeth had three root canals (56.5%), and 94 teeth had four root canals (43.5%). The incidence of second mesiobuccal canal (MB2) was 41.2%. There was no correlation between the incidence of the MB2 canal and gender and tooth position.ConclusionThe root canals of maxillary second primary molars had more variations, and there was a high incidence of the second mesiobuccal canal.
UR  - https://doi.org/10.12016/j.issn.2096-1456.2017.05.008
DO  - 10.12016/j.issn.2096-1456.2017.05.008