Adherence of "stuck" restorations to demineralized dentin following use of experimental primers.
OBJECTIVE
This in vivo study histopathologically evaluated the biocompatibility of four self-conditioning dentinal primer formulas in four bonding systems and evaluated the pulpal responses of the self-conditioning dentinal bonding systems for Class V tooth preparations in primates.


METHODS
The basic formula consisted of proprietary carboxylic diacid monomer, dipentaerythritol pentaacrylate phosphoric acid ester, acetone, and ethanol that was used alone or mixed with other commercial priming agents. After application of primers, Prisma Universal Bond 3 was selected to restore the cavity preparations.


RESULTS
All systems were judged histopathologically biocompatible. "Stuck" restorations that were resistant to acid demineralization necessary for processing of histologic slides, occurred more frequently with intact smear layers and increasing use of dehydrating agents.


CONCLUSIONS
Tests should be performed to determine whether "stuck" restorations in in vivo studies that maintain dentin-pulpal relationships can support in vitro shear bond strength tests.
Stanley
H R
HR
Division of Oral Maxillofacial Pathology and Oncology, University of Florida, College of Dentistry, Gainesville, USA.
Pameijer
C H
CH
Jefferies
S R
SR
Louw
N P
NP
D000096:Acetone / Q000737:chemistry; D000134:Acid Etching, Dental; D000268:Adhesiveness; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry / Q000494:pharmacology; D002264:Carboxylic Acids / Q000737:chemistry; D003648:Decalcification Technique; D001840:Dental Bonding; D003737:Dental Cavity Preparation / Q000145:classification; D003743:Dental Enamel / Q000648:ultrastructure; D003782:Dental Pulp / Q000187:drug effects; D003793:Dental Restoration, Permanent; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry* / Q000494:pharmacology; D004896:Erythritol / Q000031:analogs & derivatives / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry; D005069:Evaluation Studies as Topic; D016591:Histocytological Preparation Techniques; D008689:Methacrylates / Q000737:chemistry; D010215:Papio; D016369:Smear Layer; D013314:Stress, Mechanical
D001672:Biocompatible Materials; D002264:Carboxylic Acids; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C077012:erythritol methacrylate; C062652:Prisma Universal Bond; D000096:Acetone; D000431:Ethanol; D004896:Erythritol