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Limited Decalcification/Diffusion of Self-adhesive Cements into Dentin

¹ Department of Dental Materials, School of Dentistry, University of Granada, Spain; and
² Department of Dental Materials and Restorative Dentistry, University of Siena, Policlinico "Le Scotte", Italy

View larger version (118K): [in this window] [in a new window]   Figure 1. Representative light micrographs of cement/dentin interfaces stained with Masson’s trichrome: mineralized dentin (green), resin cement (clear with filler particles), exposed protein (red). (A) A distinct red zone of exposed protein was identified in the sections recovered from specimens etched with phosphoric acid (Calibra). (B,C) A slight purple line representing collagen partially reacted with resin cement is detectable at the interface between dentin and the self-etching primer (B; Panavia F 2.0) or Multilink Sprint (C) (arrows). (D-F) No signs of demineralization and/or exposed protein (red stain) are detectable at the cement/dentin interface of Rely X Unicem (D), G-Cem (E), and Bis-Cem (F). Original magnification, 100x; bar = 10 µm.

View larger version (152K): [in this window] [in a new window]   Figure 2. Scanning electron micrographs of G-Cem (A), Rely X Unicem (B), Multilink Sprint (C), Calibra (D), Panavia F 2.0 (E), and Bis-Cem (F). When the multi-step resin cement (Calibra) was used, dentin was demineralized and consecutively infiltrated by resin. Resin tags and a resin cement/hybrid zone are identified. When luted with self-adhesive cements, tubules were not infiltrated by resin, but intimate adaptation was seen, and no distinct morphological manifestation of interaction with dentin was observed.

Journal of Dental Research, Vol. 87, No. 10, 974-979 (2008)
DOI: 10.1177/154405910808701012


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