title: Diagnosis, classification, and frequency of C-shaped canals in mandibular second molars in the Lebanese population.
abstract: C-shaped canals are mostly found in mandibular second molars. Studies have shown that frequency ranges from 2.7 to 31%. This study was undertaken to provide further knowledge of the distribution of such canal anatomy, by determining the frequency of C-shaped canals in a sample representing the Lebanese population. Ninety-four mandibular second molars with scheduled endodontic treatment were examined over a 1-yr period. Of the 94 treated molars, 18 exhibited C-shaped canals that would represent 19.1% of the sample. The geographical position of Lebanon could represent an explanation for this phenomenon.
authors.affiliation: Saint Joseph University, Beirut, Lebanon.
authors.forename: G Y
authors.initials: GY
authors.lastname: Haddad
authors.forename: W B
authors.initials: WB
authors.lastname: Nehme
authors.forename: H F
authors.initials: HF
authors.lastname: Ounsi
mesh_terms: D018912:Arabs; D003786:Dental Pulp Cavity / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D007861:Lebanon; D008334:Mandible; D008963:Molar / Q000033:anatomy & histology*; D011859:Radiography; D014092:Tooth Root / Q000033:anatomy & histology*