title: The effects of four instrumentation techniques on root canal shape.
authors.forename: G
authors.initials: G
authors.lastname: Calhoun
authors.forename: S
authors.initials: S
authors.lastname: Montgomery
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D006801:Humans; D008963:Molar; D012390:Root Canal Therapy / Q000295:instrumentation / Q000379:methods*