Elsevier

Dental Materials

Volume 4, Issue 3, June 1988, Pages 111-115
Dental Materials

Original article
Adhesion to titanium of methacrylate-based polymer materials

https://doi.org/10.1016/S0109-5641(88)80002-2Get rights and content

Abstract

The purpose of the investigation was to study the bond strength between silanized titanium specimens and poly(methyl methacrylate) (PMMA). The bond strength of silanized specimens joined together with PMMA was measured in 4-point bending tests in dry and wet conditions. The average bond strength of the specimens after dry storage at 37°C was 25 MPa. Water storage for 30, 60 or 90 days at 37°C reduced the bond strength to approximately 9–11 MPa. Infra-red spectroscopy analyses indicated that the adhesion between the silanized titanium interface and the polymer was due to chemical bonds.

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    On the contrary, the shear bond and four-point bend tests do not distribute stress uniformly on the surfaces being tested [26]. Most of the methods reported in Table 1 require sandblasting the metallic surface, and all of them use either silane or phosphonate groups to create a chemical bond between the two surfaces [1,9,12,14–24]. Silanes and phosphonates covalently bind to Ti, while sandblasting increases the surface area of the exposed Ti, thus increasing the overall bonding strength [27].

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1

I.E. Ruyter, NIOM, Scandinavian Institute of Dental Materials, Forskningsveien 1, 0371 Oslo 3, Norway

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