title: Broken instrument removal--two cases.
abstract: This paper reports two clinical aids for the removal of broken instruments in root canals using a combination of hand instrumentation and ultrasonic devices. This technique is based on two phases: hand instrumentation with stainless-steel K-file instruments for bypassing the fragments, and K-files mounted on an ultrasonic handpiece for loosening and retrieval of the broken instruments. This method offers the following advantages: conservation of the remaining dentin wall of the root canal and elimination of the necessity for surgical treatment.
authors.affiliation: School of Dentistry, University of Chieti, Chieti, Italy.
authors.forename: C
authors.initials: C
authors.lastname: D'Arcangelo
authors.forename: G
authors.initials: G
authors.lastname: Varvara
authors.forename: P
authors.initials: P
authors.lastname: De Fazio
mesh_terms: D000328:Adult; D003786:Dental Pulp Cavity; D003804:Dentin / Q000648:ultrastructure; D004867:Equipment Design; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D005547:Foreign Bodies / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012388:Root Canal Irrigants / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000009:adverse effects / Q000295:instrumentation*; D013193:Stainless Steel; D013499:Surface Properties; D014464:Ultrasonic Therapy / Q000295:instrumentation
chemical_list: D012388:Root Canal Irrigants; D013193:Stainless Steel