Bonding of autopolymerizing acrylic resins to magnetic stainless steel alloys using metal conditioner

Shimizu, Hiroshi; Tsue, Fumitake; Chen, Zhao-Xun; Kawaguchi, Tomohiro; Takahashi, Yutaka

doi:10.1016/j.jdent.2007.11.010

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Volume 36, Issue 2 , Pages 138-142, February 2008

Bonding of autopolymerizing acrylic resins to magnetic stainless steel alloys using metal conditioner

Hiroshi Shimizu
- Division of Removable Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan
- Corresponding author at: Division of Removable Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental College, 2-15-1 Tamura Sawara-ku, Fukuoka 814-0193, Japan. Tel.: +81 92 801 0411; fax: +81 92 801 0513.
Fumitake Tsue
- Division of Removable Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan
Zhao-Xun Chen
- Division of Removable Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan
Tomohiro Kawaguchi
- Clinic of Prosthodontics, Fukuoka Dental College Medical and Dental Hospital, Fukuoka, Japan
Yutaka Takahashi
- Division of Removable Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan

Received 22 September 2007; received in revised form 21 November 2007; accepted 24 November 2007.

Abstract

Objectives

The shear bond strengths of a barbituric acid derivative-activated autopolymerizing acrylic resin to two magnetic stainless steel alloys using a metal conditioner were investigated.

Methods

The surfaces of the two magnetic stainless steel alloys were abraded with 600-grit silicon carbide paper. The surface preparations were: Group 1 (without preparation), Group 2 (airborne particle abrasion with 50μm alumina), and Group 3 (airborne particle abrasion followed by priming with a metal conditioner). The alloys were bonded with a barbituric acid derivative-activated autopolymerizing acrylic resin. For comparison, airborne particle abrasion and bonding with a tri-n-butylborane-initiated autopolymerizing acrylic resin (Group 4), as well as airborne particle abrasion followed by priming with a metal conditioner and bonding with the same resin (Group 5) were added. Half of the specimens were thermocycled up to 10,000 cycles. The shear bond strengths were determined.

Results

Group 3 had significantly improved shear bond strengths with the barbituric acid derivative-activated autopolymerizing acrylic resin to both stainless steel alloys. Although there were no significant differences in the bond strength among Groups 3–5 before thermocycling, the decrease in the bond strength of Group 3 was considerably greater than that of Groups 4 or 5 after thermocycling for both stainless steel alloys.

Conclusions

Significant improvements in the bond strength of the barbituric acid derivative-activated autopolymerizing acrylic resin to two magnetic stainless steel alloys were achieved by airborne particle abrasion followed by priming with the metal conditioner. The bond durability to this resin, however, was inferior to that to a tri-n-butylborane-initiated autopolymerizing acrylic resin.

Keywords: Magnetic stainless steel alloys, Bond strength, Autopolymerizing acrylic resin