Comparative study of the polyvinyl siloxane technique with resin-splinted transfer copings used for multiple implant abutment impressions.
STATEMENTS OF PROBLEM: The lack of passivity in implant dentistry may result in failures. Therefore, impression is the first procedure in the fabrication of a passive prosthesis. The aim of this study is to compare the polyvinyl siloxane technique with a resin-splinted transfer copings used for multiple implant abutment impression.


METHODS
A master cast was obtained from an edentate ridge. From the master cast, 30 casts were obtained using 3 different impression techniques. Control technique was made with polyvinyl siloxane. Resin-splinted transfer copings in condensation siloxane or irreversible hydrocolloid were used as test. The distances between analogs were obtained using a profile projector. Statistical analysis was carried out using 1-way analysis of variance.


RESULTS
No significant difference among the 3 impression techniques (P > 0.05) was observed.


CONCLUSIONS
Resin-splinted transfer copings in condensation siloxane or irreversible hydrocolloid produced impressions as accurately as polyvinyl siloxane.
Department of Prosthodontics, Brazilian Institute of Periodontology, Rio de Janeiro, Brazil.
Vinícius F
VF
Ferreira
Eliane P
EP
Barboza
Cresus Vinícius D
CV
Gouvêa
Guilherme M
GM
Bianchini
Flávio
F
Mussallem
Waldimir R
WR
Carvalho
D000180:Acrylic Resins; D000464:Alginates; D000704:Analysis of Variance; D000044:Dental Abutments; D003760:Dental Impression Materials; D003761:Dental Impression Technique; D006801:Humans; D003765:Models, Dental; D058105:Polymerization; D011145:Polyvinyls; D015203:Reproducibility of Results; D012825:Silicon; D012833:Siloxanes; D018709:Statistics, Nonparametric
D000180:Acrylic Resins; D000464:Alginates; D003760:Dental Impression Materials; D011145:Polyvinyls; D012833:Siloxanes; C034183:vinyl polysiloxane; D012825:Silicon