In vitro evaluation of adhesive characteristics of 4-META/MMA-TBB resin with organic filler

Autor: Sally J. Marshall, Joan F. Hilton, Kuniko Saeki, Nonomura G, Alexander F. Chin, Grayson W. Marshall, Yung-Ching Chien
Rok vydání: 2015
Předmět:
Nanomechanical properties
Boron Compounds
Dental Stress Analysis
Materials science
In Vitro Techniques
Electron
Medical and Health Sciences
Composite Resins
2-Hydroxyethyl Methacrylate
chemistry.chemical_compound
Engineering
Self etching
Contraction gap
Dentin
medicine
Permanent
Methylmethacrylates
Scanning
General Materials Science
Composite material
Methyl methacrylate
Dental Restoration
Permanent
General Dentistry
Elastic modulus
Microscopy
Self-Curing of Dental Resins
Atomic force microscopy
Shear bond strength
Molar
Poly(methyl methacrylate)
Resin Cements
Dental Restoration
medicine.anatomical_structure
Polymerization
chemistry
Mechanics of Materials
Dentistry
Dentin-Bonding Agents
visual_art
Microscopy
Electron
Scanning
visual_art.visual_art_medium
Methacrylates
Adhesive
AFM
Shear Strength
Zdroj: Saeki, K; Chin, AF; Nonomura, GT; Hilton, JF; Chien, YC; Marshall, SJ; et al.(2015). In vitro evaluation of adhesive characteristics of 4-META/MMA-TBB resin with organic filler. Dental Materials, 31(12), 1567-1578. doi: 10.1016/j.dental.2015.10.004. UCSF: Retrieved from: http://www.escholarship.org/uc/item/6kb8c2rc
Dental materials : official publication of the Academy of Dental Materials, vol 31, iss 12
ISSN: 0109-5641
DOI: 10.1016/j.dental.2015.10.004
Popis: © 2015 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. Objectives A commercial restorative material, BondfillSB (BF), is a modification of 4-META/MMA-TBB resin cement. BF uses a self-etching primer and added pre-polymerized organic fillers. We compared BF with another self-etching system, EasyBond (EB), in shear bond strength, bonded interface characteristics to human dentin and contraction gap when used in bulk-filling. Methods Shear bond strength of BF and EB + Z100 (Z), bonded by different experience-level operators, was evaluated. Bonded interfaces were characterized by SEM, AFM, and AFM based nano-indentation. Contraction gaps (CG) at 0 h and 24 h after polymerization were evaluated for BF or EB bulk filled class I cavities. To meet the clinical recommendation, BF's powder was replaced by experimental radioopaque powder (BFO) for the CG study. EB was used with Z (EBZ) or with a resin marketed for bulk-fill base (SureFil-SDR-flow (EBSF)). Results Shear bond strengths (Mean ± Standard Deviation (S.D.)) of BF (37.4 ± 2.6 MPa; n = 36) were higher and less variable than EBZ (18.2 ± 7.6 MPa; n = 36) (p < 0.0001, One-way ANOVA). Weibull characteristic strength (η) differed significantly between materials (p < 0.0001) but not between operators (p = 0.90). EBZ often had non-uniform interfaces and a wider band of reduced elastic modulus (E) of greater than 20 μm across the interface. BF had uniform interfaces and a smaller width of affected dentin under the interface (∼1 μm). There was a difference in dentin-E between EBZ and BF up to 9 μm from the interface (mixed-effects model; P = 0.03). A stratified linear regression model used for CG. EBSF and BFO showed significantly smaller CG than EBZ at time 0. None of three combinations showed any significant change between 0h-CG and 24h-CG. Significance BF possessed bonding characteristics required to serve as a restorative.
Databáze: OpenAIRE
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