title: Gutta percha removal utilizing GPX instrumentation.
abstract: Two studies were performed in order to test the efficiency of GPX rotary instrumentation in removing gutta percha from endodontically-treated extracted teeth. A pilot project compared GPX to gates glidden instrumentation, and then a GPX technique was performed on 60 obturated mesial canals of mandibular molars. Assessment of the technique included radiographic and microscopic analysis of remaining debris. Results indicated that the GPX is a useful adjunct in these retreatment procedures. The clinical technique and time involved in the use of the GPX are discussed.
authors.affiliation: College of Dentistry, University of Saskatchewan, Saskatoon.
authors.forename: P E
authors.initials: PE
authors.lastname: Teplitsky
authors.forename: D
authors.initials: D
authors.lastname: Rayner
authors.forename: I
authors.initials: I
authors.lastname: Chin
authors.forename: R
authors.initials: R
authors.lastname: Markowsky
mesh_terms: D003737:Dental Cavity Preparation / Q000295:instrumentation*; D003754:Dental High-Speed Equipment; D006171:Gutta-Percha; D006801:Humans; D007180:Incisor; D008963:Molar; D012086:Reoperation; D012390:Root Canal Therapy / Q000009:adverse effects / Q000295:instrumentation*
chemical_list: D006171:Gutta-Percha