Prosthetic transfer impression accuracy evaluation for osseointegrated implants.
OBJECTIVE
: The objective of this study was to evaluate and compare 3 impression techniques for osseointegrated implant transfer procedures.


METHODS
: (1) Group Splinted with Acrylic Resin (SAR), impression with square copings splinted with prefabricated autopolymerizing acrylic resin bar; (2) Group Splinted with Light-Curing Resin (SLR), impression with square copings splinted with prefabricated light-curing composite resin bar; (3). Group Independent Air-abraded (IAA), impression with independent square coping aluminum oxide air-abraded. Impression procedures were performed with polyether material, and the data obtained was compared with a control group. These were characterized by metal matrix (MM) measurement values of the implants inclination positions at 90 and 65 degrees in relation to the matrix surface. Readings of analogs and implant inclinations were assessed randomly through graphic computation AutoCAD software. Experimental groups angular deviation with MM were submitted to analysis of variance and means were compared through Tukey's test (P < 0.05).


RESULTS
: There was no statistical significant difference between SAR and SLR experimental groups and MM for vertical and angulated implants. Group IAA presented a statistically significant difference for angulated implants.


CONCLUSIONS
: It was concluded within the limitations of this study, that SAR and SLR produced more accurate casts than IAA technique, which presented inferior results.
Assunção
Wirley Gonçalves
WG
Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP-São Paulo State University, Brazil. wirley@foa.unesp.br
Tabata
Lucas Fernando
LF
Cardoso
Alessandra
A
Rocha
Eduardo Passos
EP
Gomes
Erica Alves
EA
D000180:Acrylic Resins; D000537:Aluminum Oxide; D000704:Analysis of Variance; D003188:Composite Resins; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003760:Dental Impression Materials; D003761:Dental Impression Technique / Q000295:instrumentation; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D055115:Light-Curing of Dental Adhesives; D003765:Models, Dental; D013165:Splints
D000180:Acrylic Resins; D003188:Composite Resins; D015921:Dental Implants; D003760:Dental Impression Materials; D000537:Aluminum Oxide