Tensile strength of cementing agents on the CeraOne system of dental prosthesis on implants.
OBJECTIVE
The aim of this in vitro study was to evaluate the tensile strength of titanium cylinders cemented on stainless steel abutment mock-ups by the Cerazone system.


METHODS
Four types of cements were used: glass ionomer, Fuji I (GC); zinc phosphate, Cimento LS (Vigodent); zinc oxide without eugenol, Rely x Temp NE (3M ESPE); and resin cement, Rely x ARC (3M ESPE). Four experimental groups were formed, each composed of 5 test specimens. Each test specimen consisted of a set of 1 cylinder and 1 stainless steel abutment mock-up. All cements tested were manipulated in accordance with manufacturers' instructions. A static load of 5 Newtons (N) for 2 minutes was used to standardize the procedure. The tensile tests were performed by a mechanical universal testing machine (EMIC DL500MF) at a crosshead speed of 0.5 mm/min.


RESULTS
The highest bonding values resulting from the experiment were obtained by Cimento LS (21.86 MPa mean), followed by the resin cement Rely x ARC (12.95 MPa mean), Fuji I (6.89 MPa mean), and Rely x Temp NE (4.71 MPa mean). The results were subjected to analysis of variance (ANOVA) and the Student's t test.


CONCLUSIONS
The cements differed amongst them as regards tensile strength, with the highest bonding levels recorded with zinc phosphate (Cimento LS) and the lowest with the zinc oxide without eugenol (Rely x Temp NE).
Montenegro
Alexandre Campos
AC
Odontoclínica Central da Marinha (Brazilian Navy), Brazil. montenegroacm@yahoo.com.br
Machado
Aldir Nascimento
AN
Depes Gouvêa
Cresus Vinicius
CV
D002484:Cementation / Q000379:methods*; D000044:Dental Abutments; D003722:Dental Alloys; D003738:Dental Cements / Q000737:chemistry*; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D005899:Glass Ionomer Cements; D019279:Resin Cements; D013193:Stainless Steel; D013718:Tensile Strength; D014025:Titanium; D015034:Zinc Oxide; D015036:Zinc Phosphate Cement
D003722:Dental Alloys; D003738:Dental Cements; D005899:Glass Ionomer Cements; D019279:Resin Cements; C449162:zinc oxide-non-eugenol cement; D013193:Stainless Steel; D015036:Zinc Phosphate Cement; D014025:Titanium; D015034:Zinc Oxide