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Bond Strength of Dual‐Cured Resin Cements to Human Teeth
Author(s) -
LAFUENTE JOSE DAVID,
CHAVES ANDREA,
CARMIOL ROXANA
Publication year - 2000
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/j.1708-8240.2000.tb00207.x
Subject(s) - bond strength , dentin , cement , enamel paint , materials science , ultimate tensile strength , composite material , adhesive , composite number , dentistry , dental cement , acrylic resin , layer (electronics) , medicine , coating
Purpose : This study evaluated the bond strength of four commercial resin luting cements to enamel and superficial dentin, using a second‐generation laboratory composite. Materials and Methods : Forty teeth were embedded in acrylic: 20 had superficial dentin exposed; 20 had enamel exposed. Each group was divided into four subgroups (n = 5) to be bonded with Variolink II, Dual Cement, 2‐bond‐2, and Permalute System, using an inverted, truncated cone of pre‐cured Artglass that was placed over the resin cement with a load of 2 N for 2 seconds. Specimens were stored at 37°C in 100% relative humidity for 24 hours before being tested for tensile bond strength (MPa). Data were analyzed using a two‐way analysis of variance. Tukey‐Kramer intervals for comparisons among resin cements and bonding substrates were calculated at a .05 significance level. Results : Significant differences were found among resin cements. Variolink II had statistically higher bond strength values for both substrates than the rest of the cements evaluated. When bonding was to enamel, all failures were cohesive in the composite, and when bonding was to dentin, some adhesive failures occurred at the resin cement‐dentin interface. Permalute System had higher bond strengths than 2‐bond‐2 and Dual Cement when bonded to enamel. Conclusions : Variolink II and Permalute had statistically different bond strengths to enamel and dentin. Variolink II showed statistically higher values for dentin bonding than the other cements. Use of Variolink II and Permalute resulted in statistically higher bond strengths than the other two cements. CLINICAL SIGNIFICANCE Esthetic restorations, such as tooth‐colored inlays and onlays, veneers, and crowns without metal substructure, rely on bonding for success and must be cemented with a resin cement. Bond strength of the resin cement to the restoration and tooth structure affects the outcome of the restoration. Variolink II had significantly higher bond strengths to enamel and dentin than the other cements evaluated in this study.