title: [A case report of a maxillary first molar with 6 root canals].
authors.forename: Qingping
authors.initials: Q
authors.lastname: Xi
authors.affiliation: Email: huic66@hotmail.com.
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Xuefei
authors.initials: X
authors.lastname: Wang
mesh_terms: D003786:Dental Pulp Cavity / Q000002:abnormalities*; D006801:Humans; D008437:Maxilla; D008963:Molar / Q000002:abnormalities*