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Effect of proximal box elevation with resin composite on marginal quality of ceramic inlays in vitro

Frankenberger, Roland ; Hehn, Julia ; Hajto, Jan ; Kramer, Norbert ; Naumann, Michael ; Koch, Andreas ; Roggendorf, Matthias J.

Clinical Oral Investigations, Jan, 2013, Vol.17(1), p.177(7) [Tạp chí có phản biện]

ISSN: 1432-6981

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  • Nhan đề:
    Effect of proximal box elevation with resin composite on marginal quality of ceramic inlays in vitro
  • Tác giả: Frankenberger, Roland ; Hehn, Julia ; Hajto, Jan ; Kramer, Norbert ; Naumann, Michael ; Koch, Andreas ; Roggendorf, Matthias J.
  • Chủ đề: Medicine ; Dentistry
  • Là 1 phần của: Clinical Oral Investigations, Jan, 2013, Vol.17(1), p.177(7)
  • Mô tả: Byline: Roland Frankenberger (1), Julia Hehn (1), Jan Hajto (3), Norbert Kramer (2), Michael Naumann (4), Andreas Koch (1), Matthias J. Roggendorf (1) Keywords: Dentin bonding; Resin composites; Glass--ceramic; Margin relocation; Self-etch; Ceramic inlays; Etch-and-rinse Abstract: Objectives The objective of this study was to evaluate the marginal quality and resin--resin transition of milled CAD/CAM glass--ceramic inlays in deep proximal cavities with and without 3-mm proximal box elevation (PBE) using resin composites before and after thermomechanical loading. Materials and methods MOD cavities with one proximal box beneath the cementoenamel junction were prepared in 48 extracted human third molars. Proximal boxes ending in dentin were elevated for 3 mm with different resin composites (RelyX Unicem, G-Cem, and Maxcem Elite as self-adhesive resin cements and Clearfil Majesty Posterior as restorative resin composite in one or three layers bonded with AdheSE) or left untreated. IPS Empress CAD inlays were luted with Syntac and Variolink II (n=8). Marginal quality as well as the PBE--ceramic interface were analyzed under an SEM using epoxy resin replicas before and after thermomechanical loading (100,000x50 N and 2,500 thermocycles between +5degC and +55degC). Results Bonding glass--ceramic directly to dentin showed the highest amounts of gap-free margins in dentin (92%, p<0.05). Bonded resin composite applied in three layers achieved 84% gap-free margins in dentin PBE with self-adhesive resin cements exhibited significantly more gaps in dentin (p<0.05). Conclusions With a meticulous layering technique and bonded resin composite, PBE may be an alternative to ceramic bonding to dentin. Self-adhesive resin cements seem not suitable for this indication. Clinical relevance For deep proximal boxes ending in dentin, a PBE may be an alternative to conventional techniques. Author Affiliation: (1) Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany (2) Department of Pediatric Dentistry, Dental School, University of Giessen and University Medical Center Giessen and Marburg, Campus Giessen, Schlangenzahl 14, 35392, Giessen, Germany (3) Biodentis Corp., Weissenfelser Str. 84, 04229, Leipzig, Germany (4) Department of Prosthetic Dentistry, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany Article History: Registration Date: 13/01/2012 Received Date: 18/08/2011 Accepted Date: 13/01/2012 Online Date: 23/02/2012
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1432-6981

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