title: Impedance type electronic apex locators.
authors.affiliation: School of Dentistry, Birmingham, UK.
authors.forename: P
authors.initials: P
authors.lastname: Lumley
mesh_terms: D003762:Dental Instruments; D017097:Electric Impedance; D006801:Humans; D009811:Odontometry / Q000295:instrumentation; D018915:Root Canal Preparation / Q000295:instrumentation*; D019227:Tooth Apex / Q000033:anatomy & histology*