Microtensile bond strength of porcelain laminate veneers bonded to fluorosed teeth

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Priyadarshanee M RatnaweeraShunji Fukushima

Abstract

The aim of this study was to evaluate the microtensile bond strengths (MTBSs) of porcelain laminate veneers bonded to normal and fluorosed teeth. Forty human incisors, including 20 normal and 20 moderately fluorosed teeth [Thylstrup Fejerskov Index (TFI) = 4 to 6], were collected. The labial surfaces of the teeth were ground up to 1 mm and polished with #600 silicon carbide abrasive paper. The surfaces were bonded to 1-mm-thick ceramic slices (5 x 5 mm(2)) previously made (VitaVM7) using one of two ceramic cement systems (RelyX or Clapearl) following the manufacturers' instructions. A resin composite was added on top of the ceramic slices and built up to 5-mm thickness to serve as grips. The specimens were stored in water (37 degrees C) for 24 hours, and beams of adhesive interface with a surface area of approximately 1.25 mm(2) were obtained. Then the beams were subjected to MTBS tests at a crosshead speed of 1.0 mm/min. The data were analyzed with two-way ANOVA. The results of the MTBS test (MPa) were 20.55 +/- 5.83 (RelyX/fluorosed), 20.16 +/- 4.61 (RelyX/normal), 18.74 +/- 2.88 (Clapearl/fluorosed), and 21.06 +/- 4.99 (Clapearl/normal). There were no significant differences in the MTBSs among the four groups (p > 0.05). The...Continue Reading

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Citations

Jul 1, 1993·Dental Materials : Official Publication of the Academy of Dental Materials·S N White
Jan 1, 1994·Dental Materials : Official Publication of the Academy of Dental Materials·S N WhiteR R Seghi
Mar 1, 1995·Dental Materials : Official Publication of the Academy of Dental Materials·J R Kelly
Jan 7, 2004·Dental Materials : Official Publication of the Academy of Dental Materials·Garry J P FlemingPeter M Marquis
Mar 12, 2004·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Todd KimuraLouis J Taloumis
Feb 6, 2017·Dental Materials Journal·Fernando Torres-MéndezFacundo Ruiz

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