title: Bur extensor for root canal access.
abstract: Access to a tooth with a partial canal calcification was made. The access was possible only with a bur extensor connected to a LN bur. Calcification was bypassed, and the canal was completely prepared.
authors.affiliation: Department of Endodontics, Curso de Odontologia da Universidade Federal do Paraná, Brazil.
authors.forename: S H
authors.initials: SH
authors.lastname: Moraes
mesh_terms: D000328:Adult; D003784:Dental Pulp Calcification / Q000628:therapy*; D004867:Equipment Design; D006801:Humans; D008297:Male; D011670:Pulpectomy / Q000295:instrumentation; D018915:Root Canal Preparation / Q000295:instrumentation*; D013499:Surface Properties