Effect of Splinting in Accuracy of Two Implant Impression Techniques

Autor(es)

de Avila, Erica Dorigatti ^[1] ; Moraes, Fernanda de Matos ^[1] ; Castanharo, Sabrina Maria ^[1] ; Del'Acqua, Marcelo Antonialli ^[2] ; Mollo, Jr., Francisco de Assis ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, Araraquara, SP - Brazil

^[2] Araraquara Univ Ctr UNIARA, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ORAL IMPLANTOLOGY; v. 40, n. 6, p. 633-639, DEC 2014.
• Citações Web of Science: 3

Resumo

Because there is no consensus in the literature about the need for a splint between copings, the aim of this study was to evaluate, in vitro, the accuracy of 2 impression techniques for implant-supported prostheses. A master cast was fabricated with four parallel implant abutment analogs and a passive framework. Two groups with 5 casts each were formed: Group 1 (squared impression copings with no splint: S) and Group 2 (splinted squared impression copings, using metal drill burs and Pattern resin: SS). The impression material used was polyvinyl siloxane with open trays for standard preparation of the casts. For each cast, the framework was positioned, and a titanium screw was tightened with 10 N . cm torque in analog A, after which measurements of the abutment-framework interface gaps were performed at analogs C and D. This process was repeated for analog D. These measurements were analyzed using software. A one-way analysis of variance (ANOVA) with a confidence interval of 95% was used to analyze the data. Significant differences were detected between S and SS in relation to the master cast (P <= 0.05). The median values of the abutment-framework interface gaps were as follows: master cast: 39.64 mu m; squared impression copings with no splint: 205.86 mu m; splinted squared impression copings: 99.19 mu m. Under the limitations of this study, the technique presented for Group 2 produces better results compared with the technique used for Group 1. (AU)

• Processo FAPESP: 09/14882-0 - Análise comparativa da fidelidade de diferentes técnicas de moldagem para próteses implantossuportadas
• Beneficiário: Fernanda de Matos Moraes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica