Evaluation of a two-step pouring technique for implant-supported prostheses impression

• Autor(a) principal: Assunção, Wirley Goncalves [UNESP]
• Data de Publicação: 2010
• Outros Autores: Delben, Juliana A., Santos, Paulo Henrique dos [UNESP], Tabata, Lucas F., Gomes, Erica A., Barão, Valentim A. R.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.actaodontologicalat.com/archivo/v23n1/fulltext/articulo2.pdf; http://hdl.handle.net/11449/71871
• topic: Dental impression; Evaluation; Tooth prosthesis; Dental Impression Technique; Dental Prosthesis

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.