Development of a simplified etch-and-rinse adhesive containing niobiophosphate bioactive glass

被引:23
作者
Bauer, Jose [1 ]
Carvalho, Edilausson Moreno [1 ]
Carvalho, Ceci Nunes [2 ]
Meier, Marcia Margareth [3 ]
de Souza, Juliana Pereira [4 ]
de Carvalho, Ricardo Marins [5 ]
Loguercio, Alessandro Dourado [6 ]
机构
[1] Univ Fed Maranhao UFMA, Sch Dent, Discipline Dent Mat, Sao Luis, Maranhao, Brazil
[2] Univ Ceuma, UNICEUMA, Sch Dent, Dept Restorat Dent, Sao Luis, Maranhao, Brazil
[3] State Univ Santa Catarina UDESC, Dept Chem, Joinville, SC, Brazil
[4] Energy & Nucl Res Inst IPEN, Ctr Mat Sci & Technol, Sao Paulo, SP, Brazil
[5] Univ British Columbia, Dept Oral Biol & Med Sci, Vancouver, BC, Canada
[6] State Univ Ponta Grossa UEPG, Dept Restorat Dent, Ponta Grossa, Parana, Brazil
关键词
Novel adhesives; Dentine; Micro-tensile; Radiopacity; Bioactive glass; RESIN COMPOSITES; DENTAL ADHESIVES; FILLER ADDITION; BOND STRENGTH; RADIOPACITY; RESTORATIONS; CONVERSION; SHRINKAGE; SYSTEMS;
D O I
10.1016/j.ijadhadh.2016.03.015
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Purpose: The aim of this study was to evaluate radiopacity, degree of conversion (DC), Knoop hardness (KHN), ultimate tensile strength (UTS) and microtensile bond strength (pIBS) to dentin of an experimental adhesive containing micro-filler of niobium-phosphate bioactive glass (NPG). Materials and methods: The NPG glass was produced by fusion of NbO5, Na2CO3, CaO, (NH4)(2)HPO4 at 1400 degrees C. After cooling, the glass was ground to a mean particle size < 25 p.m, and either added (40 wt%) to an experimental adhesive resin mix containing monomers and solvent, or not. The DC of the adhesives was evaluated by Fourier transform infrared spectroscopy. Flat dentin surfaces were obtained from 16 molar teeth, and prepared for use to evaluate mu TBS (n=8). An hourglass-shaped matrix (UTS and KHN) or disk-shaped matrix (radiopacity) was filled with adhesive and light-polymerized. The data from each test were analyzed by appropriate statistical methods. Results: The presence of glass particles made the adhesive system radiopaque. Addition of bioactive NPG glass particles to the adhesive system prevented decreases in bond strength; reduced the UTS and increased DC and KHN. All groups showed predominance of adhesive failure mode. Conclusion: Addition of 40% NPG glass may be an alternative to obtain an adhesive system with adequate mechanical and bond strength to dentin properties. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:110 / 114
页数:5
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