Bond strength of a resin cement to a cured composite inlay material.
Although resin cements have been effectively bonded to mineralized tooth structures, bonding to a cured composite material has remained a challenge. This study evaluated the shear bond strength of a resin cement bonded to a cured composite inlay material by use of a variety of composite surface treatments: (1) hydrofluoric acid/60 seconds, (2) ammonium bifluoride/60 seconds, (3) resin adhesive, (4) microabrasion with 50 microns aluminum oxide, and (5) microabrasion with 50 microns aluminum oxide and application of a resin adhesive. The resin cement was also bonded to human enamel that was etched with phosphoric acid. Scanning electron microscopy examinations were completed to evaluate the effects of the composite surface treatments. The results indicated that microabrasion of a cured composite enhances bonding of a resin cement. The bond strength of a resin cement to a composite surface that was air abraded with aluminum oxide, with or without the application of a resin adhesive, was higher than surface treatments with hydrofluoric acid or ammonium bifluoride. Scanning electron microscopy indicated that an irregular surface on the composite was created with aluminum oxide air abrasion.
Latta
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MA
Trubyte Division, Dentsply International, York, Pa.
Barkmeier
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WW
D000134:Acid Etching, Dental; D000180:Acrylic Resins; D000399:Air Pressure; D000537:Aluminum Oxide; D064751:Ammonium Compounds; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D003775:Dental Polishing / Q000379:methods; D005459:Fluorides; D006801:Humans; D006858:Hydrofluoric Acid; D007284:Inlays; D008855:Microscopy, Electron, Scanning; D008963:Molar; D000644:Quaternary Ammonium Compounds; D013499:Surface Properties; D013718:Tensile Strength
D000180:Acrylic Resins; D064751:Ammonium Compounds; D003188:Composite Resins; D003738:Dental Cements; D000644:Quaternary Ammonium Compounds; C060386:Triad resin; C024822:ammonium fluoride; D000537:Aluminum Oxide; D005459:Fluorides; D006858:Hydrofluoric Acid