Avaliação in vitro de materiais e técnicas de transferência em implantes múltiplos / In vitro evaluation of materials and tranfer techniques in multiple implants

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

01/07/2010

RESUMO

Objectives: The aim of this study is to compare different materials and techniques used in multiple implant transfer impressions, measuring the gap between superstructure and the implants. Method: Four external hexagonal implants (Neodent, Curitiba, Brazil) were fixed in a master cast and over a superstrucure. Afterwards, the impressions were made using polyether (Impregum, 3M Espe, Seefeld, Germany)and condensation silicone (Speedex, Coltène AG, Altstatten SG, Swiss), using open and closed tray techniques with splinted and non-splinted tranfers. Auto or photopolymerized acrylic resin was used for the splints and these were splinted, or not, resulting in sixteen groups with five casts en each. The space between master superstructure and the implants was measured using a microscope, with a precision of 0,0005mm and data were analyzed statistically by T test (=0.005) or Mann-Whitney. Results: With regard to the impression material tested, no significant differents were observed, with the exception of the groups that used photopolymerized Duolay resin to splin tranfers (groups 7 and 15) (p=0.012). Regarding splint material, no significant differeces were observed, except for the groups that employed autopolymerized Duralay (group 4) and photopolymerized Duolay (group 8) for the splint, and that were subsequently re-splinted (p=0.004); with autopolymerized Duolay (group 5) and autopolymerized Duolay (group 7) (p=0.012). When comparing the techniques with divided and re-splinted techniques with non-divided techniques, no significant differences were observed (group 3 x group 4 - pp=0158; group 5 x group 6 - p=0,094; group 7 x group 8 - p=0,144; group 11 x group 12 - p=0,331; group 13 x group 14 - p=0,203; e group 15 x group 16 - p=0,092. Conclusion: The impression materials provided similar results, favoring the use od condensed silicone due its lower cost. The autopolymerized acrylic resin was better photopolymerized resin for use in the splint implant transfers. The techniques with splinted tranfers or non-splinted tranfers provided similar results.

ASSUNTO(S)

odontologia técnica de moldagem odontológica implantes dentários materiais dentários. dental impression technique dental implants dental materials

ACESSO AO ARTIGO

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