Novel fabrication method for zirconia restorations: bonding strength of machinable ceramic to zirconia with resin cements

Dent Mater J. 2011;30(3):419-24. doi: 10.4012/dmj.2010-213. Epub 2011 May 20.

Abstract

A novel method was developed to fabricate all-ceramic restorations which comprised CAD/CAM-fabricated machinable ceramic bonded to CAD/CAM-fabricated zirconia framework using resin cement. The feasibility of this fabrication method was assessed in this study by investigating the bonding strength of a machinable ceramic to zirconia. A machinable ceramic was bonded to a zirconia plate using three kinds of resin cements: ResiCem (RE), Panavia (PA), and Multilink (ML). Conventional porcelain-fused-to-zirconia specimens were also prepared to serve as control. Shear bond strength test (SBT) and Schwickerath crack initiation test (SCT) were carried out. SBT revealed that PA (40.42 MPa) yielded a significantly higher bonding strength than RE (28.01 MPa) and ML (18.89 MPa). SCT revealed that the bonding strengths of test groups using resin cement were significantly higher than those of Control. Notably, the bonding strengths of RE and ML were above 25 MPa even after 10,000 times of thermal cycling -adequately meeting the ISO 9693 standard for metal-ceramic restorations. These results affirmed the feasibility of the novel fabrication method, in that a CAD/CAM-fabricated machinable ceramic is bonded to a CAD/CAM-fabricated zirconia framework using a resin cement.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Oxide / chemistry
  • Aluminum Silicates / chemistry
  • Apatites / chemistry
  • Ceramics / chemistry
  • Computer-Aided Design
  • Dental Bonding*
  • Dental Cements / chemistry
  • Dental Materials / chemistry*
  • Dental Porcelain / chemistry*
  • Dental Prosthesis Design*
  • Dental Restoration, Permanent / methods*
  • Dental Stress Analysis / instrumentation
  • Feasibility Studies
  • Hardness
  • Humans
  • Materials Testing
  • Methacrylates / chemistry
  • Resin Cements / chemistry*
  • Shear Strength
  • Silanes / chemistry
  • Stress, Mechanical
  • Surface Properties
  • Temperature
  • Time Factors
  • Yttrium / chemistry
  • Zirconium / chemistry*

Substances

  • Aluminum Silicates
  • Apatites
  • Dental Cements
  • Dental Materials
  • IPS e.max CAD LT
  • Methacrylates
  • Panavia-Fluoro
  • Resin Cements
  • Rocatec
  • Silanes
  • multilink adhesive system
  • yttria stabilized tetragonal zirconia
  • Dental Porcelain
  • leucite
  • Metal Primer
  • Yttrium
  • Glass ceramics
  • Zirconium
  • Aluminum Oxide
  • fluorapatite
  • zirconium oxide