Abstract

GENNARI FILHO, Humberto; MAZARO, José Vitor Quinelli; GOIATO, Marcelo Coelho  and  BERRIEL, Victoria. Analysis of implant transfer technique without impression material by photographic method. Rev. Assoc. Paul. Cir. Dent. [online]. 2014, vol.68, n.4, pp. 312-318. ISSN 0004-5276.

Objective: Analyze the accuracy of implants transfer technique without impression material, comparing it to the implants positioning of a standard model. Material and Method: A standard model with three dental implants inserted in the region 35 and 36 teeth was reproduced, getting three models (1. 2 and 3) whose areas of implants were cut to allow its transference. In the standard model, squares transfer were installed and splinted with acrylic resin (duralay reliance Dental Mfg Co, Worth, IL). The acrylic resin extension involved the adjacent teeth occlusal surfaces. After polymerization, the transfer screws were unscrewed, connected to the implants analogues and adapted. To reproduced casts, the acrylic resin extensions that limited the space, and the implants analogues fixed with dental stone type IV (Durone; Dentsply Industry and trade Ltd, Petropolis, RJ, Brasil). Both standard model and reproduced casts (1,2 and 3) were photographed through buccal and occlusal surfaces, with Nikon D50 camera, Macro lens 105mm and flash (Sigma), on stative and distance camera/object determined and maintained equal for all models photographed and measured by Corel Draw 3 program. Results: Were observed changes in the positions of all implants transferred in mesial direction (A, B and C), bucal direction (A and B) and vestibular direction (C). Conclusions: All values of implants transferred were smaller than 0,5 degree and the difference between the values of the Stander model and transferred casts may be sufficient to influence the passive fit between the structures.

Keywords : dental implants; dental impression technique; prostheses and implants.