Comparative study of chemical and mechanical retentive systems for bonding of indirect composite resin to commercially pure titanium

Brazilian Dental Journal

Adriana Cláudia Lapria Faria¹  Rodrigo Lino De Matos¹  Renata Cristina Silveira Rodrigues¹  Rossana Pereira De Almeida Antunes¹  Ricardo Faria Ribeiro¹  Maria Da Gloria Chiarello De Mattos¹ 

[1] ,University of São Paulo Dental School of Ribeirão Preto Department of Dental Materials and ProsthodonticsRibeirão Preto SP ,Brazil

关键词: composite resin;    titanium;    bond strength;   

DOI  :  10.1590/S0103-64402008000200009

来源: SciELO

【 摘 要 】

This study evaluated the effect of chemical and mechanical surface treatments for cast metal alloys on the bond strength of an indirect composite resin (Artglass) to commercially pure titanium (cpTi). Thirty cylindrical metal rods (3 mm diameter x 60 mm long) were cast in grade-1 cpTi and randomly assigned to 6 groups (n=5) according to the received surface treatment: sandblasting; chemical treatment; mechanical treatment - 0.4 mm beads; mechanical treatment - 0.6 mm beads; chemical/mechanical treatment - 0.4 mm; and chemical/mechanical treatment - 0.6 mm beads. Artglass rings (6.0 mm diameter x 2.0 mm thick) were light cured around the cpTi rods, according manufacturer's specifications. The specimens were invested in hard gypsum and their bond strength (in MPa) to the rods was measured at fracture with a universal testing machine at a crosshead speed of 2.0 mm/min and 500 kgf load cell. Data were analyzed statistically by one-way ANOVA and Tukey test (a=5%). The surface treatments differed significantly from each other (p<0.05) regarding the recorded bond strengths. Chemical retention and sandblasting showed statistically similar results to each other (p=0.139) and both had significantly lower bond strengths (p<0.05) than the other treatments. In conclusion, mechanical retention, either associated or not to chemical treatment, provided higher bond strength of the indirect composite resin to cpTi.

【 授权许可】

CC BY   
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