Three-body-wear resistance of the experimental composites containing filler treated with hydrophobic silane coupling agents

Nihei, Tomotaro; Dabanoğlu, Alp; Teranaka, Toshio; Kurata, Shigeaki; Ohashi, Katsura; Kondo, Yukishige; Yoshino, Norio; Hickel, Reinhard; Kunzelmann, Karl

doi:10.1016/j.dental.2007.09.001

Cited by 50 publications

(43 citation statements)

References 24 publications

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“…Comparing between reinforced and non-reinforced alumina fi ller in PMMA, the abrasive process might be interrupted by the alumina fi ller reinforcement in the PMMA, which resulting in reduction of wear in the resin matrix. The less volume loss shown in silanized alumina groups supported the previous studies which suggested that the addition of fi ller particles to the material can improve its wear resistance only if the particles are wellbonded to the resin matrix 22,23) . From the result of this present study, it might suggest that monolayer of silane is adequate for improving the fl exural properties and wear resistance of alumina fi ller reinforced PMMA.…”

Section: Discussionsupporting

confidence: 75%

Effect of different amounts of 3-methacryloxypropyltrimethoxysilane on the flexural properties and wear resistance of alumina reinforced PMMA

et al. 2012

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This study evaluated the different amounts of 3-methacryloxypropyltrimethoxysilane (MPS) coated alumina fi ller particles on fl exural strength and wear resistance of alumina reinforced polymethyl methacrylate (PMMA) denture base. Ten mass% of alumina fi ller silanized with 0, 0.1, 0.2, or 0.4 mass% of MPS was blended with PMMA. PMMA without alumina particles served as control. Specimens were prepared for fl exural strength and wear resistance tests (n=10). Flexural strength was determined using a 3-point bending test and volume loss was measured by in-vitro 2-body wear-testing. The results were analyzed by One-way ANOVA and Tamhane's test (α=0.05). Flexural strength ranged from 95.1-117.8 MPa, while volume loss ranged from 0.038-0.160 mm 3 . Statistical analysis indicated the 0.1 mass% MPS silanized group had signifi cantly higher fl exural strength and lower volume loss than the control group. Adding alumina fi ller silanized with 0.1 mass% MPS resulted in an improvement of the fl exural strength and wear resistance of PMMA.

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Section: Discussionsupporting

confidence: 75%

Effect of different amounts of 3-methacryloxypropyltrimethoxysilane on the flexural properties and wear resistance of alumina reinforced PMMA

et al. 2012

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“…[1][2][3] Adhesive cements are also said to improve the integrity of the restorative space, allowing for a more effective stress transfer from the restoration into the supporting tooth. [4][5] Consequently, poorly polymerized luting agents fail to establish a tooth-restoration unit, increasing the chance for restoration and cuspal fracture.…”

Section: Introductionmentioning

confidence: 99%

Degree of Conversion of Luting Resins Around Ceramic Inlays in Natural Deep Cavities: A Micro-Raman Spectroscopy Analysis

Lohbauer¹,

Pelka²,

Belli³

et al. 2010

Operative Dentistry

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Clinical RelevanceContrary to previous evidence, the degrees of conversion of resin luting materials have been shown to reach statistically similar values in three different depths around ceramic inlays luted to natural cavities. Both dual-cure and light-cure materials have presented conversion homogeneity, although they have been shown to be material-dependent. SUMMARYThis study evaluated the degree of conversion (%DC) of luting agents around ceramic inlays placed in deep natural cavities. Thirty-six cylindrical Class I cavities (diameter = 4 mm, depth = 4 mm) were prepared in freshly extracted human teeth and randomly divided according to the luting materials used for luting CAD/CAM fabricated inlays (Empress CAD). The dual-cure resin cements Clearfil Esthetic Cement and Variolink II Low and the light-cure composites Grandio Flow and Grandio were luted using the total-etch technique. The self-adhesive dual-cure cements RelyX Unicem and Maxcem Elite were used as recommended by the manufacturer. All of the restorations were photo-activated using a quartz halogen unit (Elipar TriLight; 750 mW/cm²) for 40 seconds. After 24 hour dry-storage in the dark, all the teeth were vertically sectioned into two halves (n=12 per group) using a slow-speed diamond-saw in the bucco-vestibular direction under constant water lubrication to

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“…Com isso, a partícula de carga inorgânica é coberta por várias moléculas de silano, tornando a interface complexa 38 . Já o grupo metacrilato (C=C) forma ligação covalente com a matriz orgânica, finalizando o processo de união 39,40 .…”

Section: Figura 3 -Hidrólise Do Silano (Mpts)unclassified

Silanização de partículas de carga de compósitos odontológicos – revisão de literatura

Cavalcante

De²,

Mariel³

et al. 2014

Rev. da Fac. de Odontologia, UPF

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Objetivo: o presente trabalho teve como objetivo realizar uma revisão de literatura com a intenção de simplificar o entendimento a respeito da importância do tipo aos tipos de silanos MPTS (γ-metacrilioxipropil trimetoxisilano), OTMS (n-octiltrimetoxisilano), UDMS (3-[(1,3(2)-dimetacriloiloxipropil)-2(3)-oxicarbonillamido]propiltrietoxisilano), GPS (γ-glicidoxipropil trimetoxisilano) e ATES (organosilanos allitrietoxisilano), efeitos das suas aplicações e dos IntroduçãoCompósitos odontológicos são amplamente empregados como materiais restauradores diretos na clínica odontológica. Com uma notável propriedade mecânica e uma excelente característica estética, as resinas atuais são capazes de mimetizar propriedades singulares, dos dentes como cor, brilho e textura; entretanto o meio bucal ainda é adverso para a longevidade das restaurações. Interferências químicas, térmicas e mecânicas, atuando em diversas combinações, exercem papel fundamental no processo de degradação intraoral ao qual esses materiais restauradores são submetidos. Alterações na textura superficial e diminuição das propriedades físicas ao longo do tempo, causadas pelos processos de desgaste e de hidrólise no meio oral são fatores que indicam a necessidade do desenvolvimento de compósi-tos odontológicos com propriedades melhoradas e, consequentemente, mais duráveis. Visto isso, novos compósitos são frequentemente estudados e aperfeiçoados, tentando diminuir ou até mesmo cessar tais interferências nocivas do ambiente oral.

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Three-body-wear resistance of the experimental composites containing filler treated with hydrophobic silane coupling agents

Cited by 50 publications

References 24 publications

Effect of different amounts of 3-methacryloxypropyltrimethoxysilane on the flexural properties and wear resistance of alumina reinforced PMMA

Effect of different amounts of 3-methacryloxypropyltrimethoxysilane on the flexural properties and wear resistance of alumina reinforced PMMA

Degree of Conversion of Luting Resins Around Ceramic Inlays in Natural Deep Cavities: A Micro-Raman Spectroscopy Analysis

Silanização de partículas de carga de compósitos odontológicos – revisão de literatura

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