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Microtensile bond strength of a repair composite to leucite-reinforced feldspathic ceramic

Author(s): de Melo, Renata Marques [UNESP] ; Valandro, Luiz Felipe [UNESP] ; Bottino, Marco Antonio [UNESP]

Date: 2014

Persistent ID: http://hdl.handle.net/11449/70070

Origin: Oasisbr

Subject(s): Bond strength; Ceramic; Repair composite; Surface treatment; aluminum oxide; aluminum silicate; biomaterial; biomedical and dental materials; bisphenol A bis(2 hydroxypropyl) ether dimethacrylate; Filtek Z250; hydrofluoric acid; leucite; Omega Dental Ceramic; potassium derivative; resin; resin cement; silane derivative; silicon dioxide; single bond; unclassified drug; chemistry; clinical trial; comparative study; controlled clinical trial; controlled study; dental acid etching; dental bonding; dental etching; feldspar; human; materials testing; mechanical stress; methodology; randomized controlled trial; tensile strength; tooth prosthesis; Acid Etching, Dental; Aluminum Oxide; Aluminum Silicates; Bisphenol A-Glycidyl Methacrylate; Coated Materials, Biocompatible; Composite Resins; Dental Bonding; Dental Etching; Dental Materials; Dental Porcelain; Dental Prosthesis Repair; Humans; Hydrofluoric Acid; Materials Testing; Potassium Compounds; Resin Cements; Silanes; Silicon Dioxide; Stress, Mechanical; Tensile Strength; Bond strength; Bond strength; Ceramic; Ceramic; Repair composite; Repair composite; Surface treatment; Surface treatment; aluminum oxide; aluminum oxide; aluminum silicate; aluminum silicate; biomaterial; biomaterial; biomedical and dental materials; biomedical and dental materials; bisphenol A bis(2 hydroxypropyl) ether dimethacrylate; bisphenol A bis(2 hydroxypropyl) ether dimethacrylate; Filtek Z250; Filtek Z250; hydrofluoric acid; hydrofluoric acid; leucite; leucite; Omega Dental Ceramic; Omega Dental Ceramic; potassium derivative; potassium derivative; resin; resin; resin cement; resin cement; silane derivative; silane derivative; silicon dioxide; silicon dioxide; single bond; single bond; unclassified drug; unclassified drug; chemistry; chemistry; clinical trial; clinical trial; comparative study; comparative study; controlled clinical trial; controlled clinical trial; controlled study; controlled study; dental acid etching; dental acid etching; dental bonding; dental bonding; dental etching; dental etching; feldspar; feldspar; human; human; materials testing; materials testing; mechanical stress; mechanical stress; methodology; methodology; randomized controlled trial; randomized controlled trial; tensile strength; tensile strength; tooth prosthesis; tooth prosthesis; Acid Etching, Dental; Acid Etching, Dental; Aluminum Oxide; Aluminum Oxide; Aluminum Silicates; Aluminum Silicates; Bisphenol A-Glycidyl Methacrylate; Bisphenol A-Glycidyl Methacrylate; Coated Materials, Biocompatible; Coated Materials, Biocompatible; Composite Resins; Composite Resins; Dental Bonding; Dental Bonding; Dental Etching; Dental Etching; Dental Materials; Dental Materials; Dental Porcelain; Dental Porcelain; Dental Prosthesis Repair; Dental Prosthesis Repair; Humans; Humans; Hydrofluoric Acid; Hydrofluoric Acid; Materials Testing; Materials Testing; Potassium Compounds; Potassium Compounds; Resin Cements; Resin Cements; Silanes; Silanes; Silicon Dioxide; Silicon Dioxide; Stress, Mechanical; Stress, Mechanical; Tensile Strength; Tensile Strength

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Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:22:41Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:46:04Z : No. of bitstreams: 1 2-s2.0-61449562199.pdf: 471360 bytes, checksum: bfe0c87205653c1bccc11e9c783c225e (MD5)

Made available in DSpace on 2014-05-27T11:22:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-12-01

The purpose of this study was to evaluate the microtensile bond strength of a repair composite resin to a leucite-reinforced feldspathic ceramic (Omega 900, VITA) submitted to two surface conditionings methods: 1) etching with hydrofluoric acid + silane application or 2) tribochemical silica coating. The null hypothesis is that both surface treatments can generate similar bond strengths. Ten ceramic blocks (6x6x6 mm) were fabricated and randomly assigned to 2 groups (n=5), according to the conditioning method: G1- 10% hydrofluoric acid application for 2 min plus rinsing and drying, followed by silane application for 30 s; G2- airborne particle abrasion with 30 μm silica oxide particles (CoJet-Sand) for 20 s using a chairside air-abrasion device (CoJet System), followed by silane application for 5 min. Single Bond adhesive system was applied to the surfaces and light cured (40 s). Z-250 composite resin was placed incrementally on the treated ceramic surface to build a 6x6x6 mm block. Bar specimens with an adhesive area of approximately 1 ± 0.1 mm2 were obtained from the composite-ceramic blocks (6 per block and 30 per group) for microtensile testing. No statistically significant difference was observed between G1 (10.19 ± 3.1 MPa) and G2 (10.17 ± 3.1 MPa) (p=0.982) (Student's t test; á = 0.05). The null hypothesis was, therefore, accepted. In conclusion, both surface conditioning methods provided similar microtensile bond strengths between the repair composite resin and the ceramic. Further studies using long-term aging procedures should be conducted.

Department of Dental Materials and Prosthodontics School of Dentistry of São José dos Campos São Paulo State University, São José dos Campos, SP

School of Dentistry of São José dos Campos São Paulo State University, São José dos Campos, SP

Department of Restorative Dentistry School of Dentistry Federal University of Santa Maria, Santa Maria, RS

Department of Dental Materials and Prosthodontics School of Dentistry of São José dos Campos São Paulo State University, São José dos Campos, SP

School of Dentistry of São José dos Campos São Paulo State University, São José dos Campos, SP

Document Type Journal article
Language English

Document details

Microtensile bond strength of a repair composite to leucite-reinforced feldspathic ceramic

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