Clinical study on the second mesiobuccal canal in the mesiobuccal root of the maxillary second primary molar
LI Yong-ji
SONG Yang
SUN Tuo-qi
ZHANG Ying-hua
Abstract：AIM:To study the clinical incidence of the second mesiobuccal(MB2) root canal of maxillary sec-ond primary molars. METHODS:75maxillary second molars with pulpitis or apical periodontitis in 73 children(34 male,39 female)were included. The teeth were examined by X-ray films before operating. After opening the pulp chamber, the fis-sure or grooves between the mesiobuccal and palatal canal were detected with #10 files to find MB2. Then, the therapy of MB2 was completed using root canal apex locator. The incidence of MB2 was calculate through the postoperative X-ray films. RESULTS:MB2 canal was found in 58 out of the 75 maxillary second primary molars(77. 33％). There was no sig-nificant defferenc of MB2 canal between gender(χ2 =0. 89,P>0. 05). The working length of MB was greater than that of MB2. CONCLUSION:There is a high incidence of the second mesiobuccal root canal of maxillary second primary molars.
Keywords：maxillary second primary molarroot canal therapythe second mesiobuccaI root canalapex locat-erincidence
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 284-287 )