Comparison of microleakage of three acid-base luting cements versus one resin-bonded cement for Class V direct composite inlays

• Published in: The Journal of prosthetic dentistry Vol. 88; no. 6; pp. 598 - 603
• Main Authors: Piemjai, Morakot, Miyasaka, Kumiko, Iwasaki, Yasuhiko, Nakabayashi, Nobuo
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.12.2002
• Subjects: Animals; Boron Compounds - chemistry; Cattle; Composite Resins - chemistry; Dental Cavity Preparation - classification; Dental Cements - chemistry; Dental Cementum - pathology; Dental Enamel - pathology; Dental Leakage - classification; Dentin - pathology; Dentistry; Glass Ionomer Cements - chemistry; Inlays - classification; Magnesium Oxide - chemistry; Methacrylates - chemistry; Methylmethacrylate - chemistry; Methylmethacrylates - chemistry; Polycarboxylate Cement - chemistry; Random Allocation; Resin Cements - chemistry; Rosaniline Dyes; Statistics, Nonparametric; Surface Properties; Temperature; Time Factors; Water - chemistry; Zinc Oxide - chemistry; Zinc Phosphate Cement - chemistry
• ISSN: 0022-3913; 1097-6841
• DOI: 10.1067/mpr.2002.129383

Statement of Problem. Demineralized dentin beneath set cement may adversely affect microleakage under fixed restorations. Purpose. Microleakage of direct composite inlays cemented with acid-base cements and a methyl methacrylate resin cement were evaluated to determine their effect on the integrity of the underlying hybridized dentin. Material and Methods. Sixty Class V box preparations (3 mm × 3 mm × 1.5 mm) were precisely prepared in previously frozen bovine teeth with one margin in enamel and another margin in dentin. Direct composite inlays (EPIC-TMPT) for each preparation were divided into 4 groups of 15 specimens each and cemented with 3 acid-base cements (control group): Elite, Ketac-Cem, Hy-Bond Carbo-Cem, and 1 adhesive resin cement: C&B Metabond. All specimens were stored in distilled water for 24 hours at 37° C before immersion in 0.5% basic fuchsin for 24 hours. The dye penetration was measured on the sectioned specimens at the tooth-cement interface of enamel and cementum margins and recorded with graded criteria under light microscopy (Olympus Vanox-T) at original magnification × 50, 100, and 200. A Kruskal-Wallis and the Mann-Whitney test at P<.05 were used to analyze leakage score. Results. All cementum margins of the 3 acid-base cements tested demonstrated significantly higher leakage scores than cementum margins for inlays cemented with the resin cement tested(P<.01). No leakage along the tooth-cement interface was found for inlays retained with the adhesive resin cement. Conclusion. Within the limitations of this study, the 3 acid-base cements tested exhibited greater microleakage at the cementum margins than did the adhesive resin cement that was tested. (J Prosthet Dent 2002;88:598-603.)