Influence of ceramic surface conditioning and resin cements on microtensile bond strength to a glass ceramic

Pisani-Proença, Jatyr; Erhardt, Maria Carolina Guilherme; Valandro, Luiz Felipe; Gutierrez-Aceves, Guillermo; Bolaños-Carmona, Victoria; Castillo-Salmerón, Ramón Del; Bottino, Marco Antônio

doi:10.1016/j.prosdent.2006.09.023

Cited by 84 publications

(72 citation statements)

References 22 publications

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“…A correlation between high strength and low margin wear of resin cements has also been demonstrated in vitro [7], leading to a positive clinical prognosis for the cements with high micromechanical properties. Besides that, the ranking of the modulus of elasticity measured in our test seems to correlate well with the micro-tensile bond strength tests, which showed a significantly higher strength for RelyX Unicem compared to Multilink [26] or Maxcem [27].…”

Section: Discussionsupporting

confidence: 60%

Effect of curing mode on the micro-mechanical properties of dual-cured self-adhesive resin cements

Ilie

Simon

2011

Clin Oral Invest

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Light supplying to luting resin cements is impeded in several clinical situations, causing us to question whether materials can properly be cured to achieve adequately (or adequate) mechanical properties. The aim of this study was therefore to analyse the effect of light on the micro-mechanical properties of eight popular dual-cured self-adhesive resin cements by comparing them with two conventional, also dual-cured, resin cements. Four different curing procedures were applied: auto-polymerisation (dark curing) and light curing (LED unit, Freelight 2, 20 s) by applying the unit directly on the samples' surface, at a distance of 5 and 10 mm. Twenty minutes after curing, the samples were stored for 1 week at 37°C in a water-saturated atmosphere. The micro-mechanical properties-Vickers hardness, modulus of elasticity, creep and elastic/plastic deformation-were measured. Data were analysed with multivariate ANOVA followed by Tukey's test and partial eta-squared statistics (p < 0.05). A very strong influence of the material as well as filler volume and weight on the micro-mechanical properties was measured, whereas the influence of the curing procedure and type of cement-conventional or self-adhesive-was generally low. The influence of light on the polymerisation process was material dependent, with four different behaviour patterns to be distinguished. As a material category, significantly higher micro-mechanical properties were measured for the conventional compared to the self-adhesive resin cements, although this difference was low. Within the self-adhesive resin cements group, the variation in micro-mechanical properties was high. The selection of suitable resin cements should be done by considering, besides its adhesive properties, its micro-mechanical properties and curing behaviour also.

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Section: Discussionsupporting

confidence: 60%

Effect of curing mode on the micro-mechanical properties of dual-cured self-adhesive resin cements

Ilie

Simon

2011

Clin Oral Invest

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“…Chemically, hydrofluoric acid dissolves glass by reacting with silicon oxide, which is the main ingredient in glass. Dental porcelain consists of glassy and crystal phases, thus HF can dissolve the glassy phase, leaving the crystalline phase, creating surface roughness 16,32,33,[52][53][54] .…”

Section: Discussionmentioning

confidence: 99%

Dental zirconia can be etched by hydrofluoric acid

et al. 2014

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The surface morphology and crystal structure change of dental zirconia after hydrofluoric acid (HF) etching were evaluated. Four groups of sintered zirconia specimens were 1) control group, 2) immersion in 9.5%HF at 25 o C for 1, 2, 3, or 24 h, 3) immersion in 9.5%HF at 80o C for 1, 3, 5, or 30 min and 4) immersion in 48%HF at 25 o C for 30 or 60 min. The specimens were evaluated under SEM and XRD. The SEM analysis revealed changes in surface topography for all the HF-etched zirconia specimens. The irregularities surface increased with increasingly longer immersion times and higher etching solution temperatures. The XRD analysis of the HFetched zirconia specimens revealed the presence of a crystalline monoclinic phase along with a tetragonal form. It was concluded HF can etch dental zirconia ceramic, creating micro-morphological changes. Tetragonal-to-monoclinic phase transformation was induced on the etched zirconia surface.

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“…Additionally, longterm retention of the restoration depends primarily on the strength and durability of the bond of luting composite resin to the tooth and porcelain substrates to prevent fracture, marginal discoloration, and secondary caries [2]. To achieve successful bonding, the ceramic surface may be modified chemically by hydrofluoric (HF) acid etching or mechanically by grit blasting to promote the roughness of ceramic surface and/or reactivity of the ceramic to luting agent, and chemical bonding by a silane coupling agent [3][4][5]; however, dental ceramic is fragile under tensile strain. The weakness can be attributed to the presence and propagation of microflaws presented on the surface of the material, making dental ceramic susceptible to fracture during the luting procedure and under occlusal force [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of etching time and resin bond on the flexural strength of IPS e.max Press glass ceramic

2014

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Influence of ceramic surface conditioning and resin cements on microtensile bond strength to a glass ceramic

Cited by 84 publications

References 22 publications

Effect of curing mode on the micro-mechanical properties of dual-cured self-adhesive resin cements

Effect of curing mode on the micro-mechanical properties of dual-cured self-adhesive resin cements

Dental zirconia can be etched by hydrofluoric acid

Effect of etching time and resin bond on the flexural strength of IPS e.max Press glass ceramic

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