Evaluation of resin composite materials. Part I: in vitro investigations.

Abstract

PURPOSE:

To evaluate different resin-based composites using a variety of in vitro investigation methods to predict their clinical behavior.

METHODS:

Materials selected for this study were Heliomolar radiopaque (microfilled), Tetric Ceram, Pertac II (minifilled hybrids), Ariston pHc (ion releasing hybrid), and Solitaire I (hybrid with porous fillers). The evaluated in vitro criteria were three-body wear according to the ACTA method, microtensile bond strengths to enamel and dentin, flexural strength (four-point bending strength), flexural fatigue behavior (flexural fatigue limit), and calcium ion release (for Ariston pHc).

RESULTS:

Concerning wear resistance, Ariston pHc (20.5 microm after 200,000 cycles) was inferior to the other materials (13.7-15.9 microm). Microtensile bond strengths to dentin were similar for Heliomolar (32.0 MPa), Tetric Ceram (30.4 MPa; both bonded with Syntac Classic), and Pertac II (30.8 MPa; bonded with EBS Multi) being above Solitaire I (22.5 MPa; bonded with Solidbond) being above Ariston pHc (13.2 MPa; bonded with Ariston Liner). Enamel bond strengths for Heliomolar (40.0 MPa), Tetric Ceram (36.5 MPa), and Pertac II (38.9 MPa) were significantly higher than for Solitaire I (26.6 MPa) which was above Ariston pHc (7.2 MPa). Heliomolar, Tetric Ceram, and Pertac II revealed higher micro-TBS to enamel than to dentin, Ariston showed the contrary, and Solitare exhibited no difference between enamel and dentin micro-TBS. Solitaire I exhibited a lower initial flexural strength than the other materials, the computed fatigue strength of the material even dropped to the level of glass ionomer cements (17.9 MPa). Long-term calcium release data for Ariston exhibited a continuously high calcium release becoming lower at the end of the observation beyond 21 months.

• Authors: Roland Frankenberger, Franklin García-Godoy, Ulrich Lohbauer, Anselm Petschelt, Norbert Krämer
• Journal: American journal of dentistry (Am J Dent) Vol. 18 Issue 1 Pg. 23-7 (Feb 2005) ISSN: 0894-8275 [Print] United States
• PMID: 15810477 (Publication Type: Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Acrylic Resins
• Ariston pHc
• Composite Dental Resin
• Composite Resins
• EBS adhesive system
• Heliomolar
• Methacrylates
• Phosphoric Acids
• Polyurethanes
• Resin Cements
• Solitaire composite resin
• Tetric ceram
• Calcium

Topics

• Acrylic Resins (chemistry)
• Analysis of Variance
• Calcium
• Composite Resins (chemistry)
• Dental Restoration Wear
• Dental Restoration, Permanent (methods)
• Dental Stress Analysis
• Humans
• Materials Testing
• Methacrylates (chemistry)
• Molar
• Phosphoric Acids (chemistry)
• Pliability
• Polyurethanes (chemistry)
• Resin Cements (chemistry)
• Statistics, Nonparametric
• Tensile Strength