title: Evaluation of the controlled placement of injected thermoplasticized gutta-percha.
abstract: Ninety extracted human teeth with a single canal and a large patent foramen were obturated by one of three methods after placement of a master gutta-percha cone and sealer. The apical seals were evaluated by ink penetration. Statistical analysis of the results indicated that the group obturated with the high-temperature injected thermoplasticized technique (Obtura) had an apical seal comparable to the group obturated by lateral condensation. The group obturated with the low-temperature injected thermoplasticized technique (Ultrafil) produced an apical seal significantly better than the other two techniques.
authors.forename: A K
authors.initials: AK
authors.lastname: Olson
authors.forename: G R
authors.initials: GR
authors.lastname: Hartwell
authors.forename: R N
authors.initials: RN
authors.lastname: Weller
mesh_terms: D003763:Dental Leakage; D006171:Gutta-Percha; D006801:Humans; D012389:Root Canal Obturation; D014092:Tooth Root / Q000033:anatomy & histology
chemical_list: D006171:Gutta-Percha