Human pulp reactions to resin restorations performed with different acid-etch restorative procedures.
Fifty-eight experimental resin restorations were performed in intact, human premolars, using different leakage-reducing restorative procedures. These were conventional acid-etching and acid-etching followed by cavity treatment with an intermediary layer of low-viscous resin or the dentin adhesive NPG-GMA/ethanol. The teeth were extracted after 4 months and examined for pulpal inflammation/necrosis (I), reduction of odontoblasts (OR), and formation of tertiary dentin (TD). By the general linear model procedure, 91%, 34%, and 56% of the variations in I, OR, and TD, respectively, could be explained by variations in the experimental conditions. The significant independent variables were jaw, stage of root formation, width of pulp, width of cavity, marginal leakage, bacteria in the cavity, bacteria in the exposed dentinal tubules, and the restorative procedure. With regard to the restorative procedure the analyses showed that application of low-viscous resin increased the pulpal reactions OR and I, whereas cavity treatment with NPG-GMA/ethanol had no adverse biologic effect.
Qvist
V
V
Department of Cariology and Endodontics, Royal Dental College, Copenhagen, Denmark.
Stoltze
K
K
Qvist
J
J
D000134:Acid Etching, Dental / Q000009:adverse effects*; D000293:Adolescent; D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate; D002648:Child; D003188:Composite Resins / Q000009:adverse effects; D001840:Dental Bonding / Q000009:adverse effects*; D003737:Dental Cavity Preparation / Q000009:adverse effects / Q000379:methods*; D003738:Dental Cements / Q000009:adverse effects; D003763:Dental Leakage / Q000517:prevention & control*; D003782:Dental Pulp / Q000187:drug effects*; D003793:Dental Restoration, Permanent / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D008689:Methacrylates / Q000009:adverse effects; D011109:Polymethacrylic Acids / Q000009:adverse effects; D012044:Regression Analysis
D003188:Composite Resins; D003738:Dental Cements; D008689:Methacrylates; D011109:Polymethacrylic Acids; D017438:Bisphenol A-Glycidyl Methacrylate; C008691:NPG-GMA