Journal article
The Effect of Prophylaxis Method on Microtensile Bond Strength of Indirect Restorations to Dentin
Operative dentistry, Vol.37(6), pp.602-609
10/01/2012
DOI: 10.2341/11-459-L
PMID: 22616925
Abstract
SUMMARY The aim of this study was to evaluate the effect of different materials used for dentin prophylaxis on the microtensile bond strengths (μTBS) of adhesively cemented indirect composite restorations. Sixty bovine incisors had the buccal surface ground with wet #600-grit silicon carbide abrasive paper to obtain a flat exposed superficial dentin and were submitted to different prophylaxis protocols, as follows: 3% hydrogen peroxide (HydP); 0.12% chlorhexidine (Chlo); sodium bicarbonate jet (SodB); 50-μm aluminum oxide air abrasion (AirA); pumice paste (PumP), and control group–water spray (Cont). After prophylaxis protocols a resin composite block (3.0 mm × 5.0 mm × 5.0 mm) was adhesively cemented using dual resin cement (Rely X ARC). After 24 hours of water storage, specimens were serially sectioned perpendicular to the bonded interface into 1-mm-thick slices. Each specimen was trimmed with a diamond bur to an hourglass shape with a cross-sectional area of approximately 1.0 mm2 at the bonded area. Specimens were tested (μTBS) at 0.5 mm/min using a universal testing machine. Scanning electron microscopy was used to examine the effects of prophylaxis techniques on dentin. Bond strength data (MPa) were analyzed by one-way analysis of variance and failure mode by Fisher test (α=0.05). μTBS data, means (SD), were (different superscripted letters indicate statistically significant differences): AirA, 25.2 (7.2)a; PumP, 24.1 (7.8)a; Chlo, 21.5 (5.6)a; Cont, 20.6 (8.1)a; HydP, 15.5 (7.6)b; and SodB, 11.5 (4.4)c. The use of aluminum oxide air abrasion, pumice paste, and chlorhexidine before acid etching did not significantly affect μTBS to dentin; however, the use of hydrogen peroxide and sodium bicarbonate jet significantly reduced μTBS.
Details
- Title: Subtitle
- The Effect of Prophylaxis Method on Microtensile Bond Strength of Indirect Restorations to Dentin
- Creators
- C J Soares - Carlos José Soares, DDS, MS, PhD, professor and chairman, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, BrazilJ C Pereira - Janaína Carla Pereira, DDS, MS, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, BrazilSJB Souza - Murilo Souza Menezes, DDS, MS, PhD, Professor, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, BrazilM S Menezes - Murilo Souza Menezes, DDS, MS, PhD, Professor, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, BrazilS R Armstrong - Steven R Armstrong, DDS, PhD, professor and chairman, Department of Operative Dentistry, University of Iowa College of Dentistry, Iowa City, IA, USA
- Resource Type
- Journal article
- Publication Details
- Operative dentistry, Vol.37(6), pp.602-609
- DOI
- 10.2341/11-459-L
- PMID
- 22616925
- NLM abbreviation
- Oper Dent
- ISSN
- 0361-7734
- eISSN
- 1559-2863
- Language
- English
- Date published
- 10/01/2012
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984065803802771
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