, Volume 97, Issue 2, pp 103–108 | Cite as

Evaluation of two dual-functional primers and a tribochemical surface modification system applied to the bonding of an indirect composite resin to metals

  • Hiroaki Yanagida
  • Naomi TanoueEmail author
  • Takako Ide
  • Hideo Matsumura
Original Article


We evaluated the effects of two dual-functional primers and a tribochemical surface modification system on the bond strength between an indirect composite resin and gold alloy or titanium. Disk specimens (diameter, 10 mm; thickness, 2.5 mm) were cast from type 4 gold alloy and commercially pure titanium. The specimens were wetground to a final surface finish using 600-grit silicone carbide paper. The specimens were then air-dried and treated using the following four bonding systems: (1) air-abrasion with 50–70 μm alumina, (2) system 1 + alloy primer, (3) system 1 + metal link primer, and (4) tribochemical silica/silane coating (Rocatec). A light-polymerizing indirect composite resin (Ceramage) was applied to each metal specimen and polymerized according to the manufacturer’s specifications. Shear bond strengths (MPa) were determined both before and after thermocycling (4°C and 60°C for 1 min each for 20 000 cycles). The values were compared using analysis of variance, post hoc Scheffe tests, and Mann-Whitney U tests (alpha = 0.05). The strengths decreased after thermocycling for all combinations. For both gold alloy and titanium, the bond strength with air-abrasion only was statistically lower than that with the other three modification methods after thermocycling. Titanium exhibited a significantly higher value (13.4 MPa) than gold alloy (10.5 MPa) with the air. abrasion and alloy primer system. Treatment with the tribochemical system or air abrasion followed by treatment with dual-functional priming agents was found to be effective for enhancement of the bonding between the indirect composite and gold alloy or titanium.

Key words

Bond strength Gold alloy Titanium Primer Silica coating 


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Copyright information

© The Society of The Nippon Dental University 2009

Authors and Affiliations

  • Hiroaki Yanagida
    • 1
  • Naomi Tanoue
    • 2
    Email author
  • Takako Ide
    • 1
  • Hideo Matsumura
    • 3
  1. 1.Department of Applied ProsthodonticsNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
  2. 2.Division of General DentistryNagasaki University Hospital of Medicine and DentistryNagasakiJapan
  3. 3.Department of Fixed ProsthodonticsNihon University School of DentistryTokyoJapan

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