title: Evaluation of a two-step pouring technique for implant-supported prostheses impression.
abstract: The aim of this study was to evaluate the efficacy of a pouring technique for implant-supported prostheses impressions. A metallic matrix (control group) with two implants positioned at 90 and 65 degrees was fabricated. The matrix was submitted to the direct transfer impression technique. In group CP (conventional pouring - n = 10), casts were obtained by the conventional pouring technique. In group EP (experimental pouring - n = 10), the analogs were embraced with latex tubes before the first pouring and then submitted to a second pouring. Vertical misfit and implants/analogs inclinations were evaluated. Data were analyzed by analysis of variance and Tukey's test (p < .05). Results demonstrated significant difference (p < .05) between control and experimental groups for misfit measurement in perpendicular implant/analog and between control group and group EP in leaning implant/analog. Considering inclination, there were significant differences (p < .05) between control and experimental groups for leaning analogs. Independently of the pouring technique, perpendicular implants produced more accurate casts.
authors.affiliation: Department of Dental Materials and Prosthodontics, Araçatuba Dental School, São Paulo State University (UNESP), São Paulo, Brazil. wirley@foa.unesp.br
authors.forename: Wirley G
authors.initials: WG
authors.lastname: Assunção
authors.forename: Juliana A
authors.initials: JA
authors.lastname: Delben
authors.forename: Paulo H
authors.initials: PH
authors.lastname: dos Santos
authors.forename: Lucas F
authors.initials: LF
authors.lastname: Tabata
authors.forename: Erica A
authors.initials: EA
authors.lastname: Gomes
authors.forename: Valentim A R
authors.initials: VA
authors.lastname: Barão
mesh_terms: D003761:Dental Impression Technique; D017266:Dental Prosthesis