Fracture toughness versus micro-tensile bond strength testing of adhesive–dentin interfaces

The purpose of this study was to investigate the tensile bond strength to dentin of three self-etching adhesive systems at refrigerated and room temperatures. Seventy-eight bovine incisors were embedded in self-cured acrylic resin, abraded on a water-cooled lathe and polished with 400- and 600-grit sandpapers to obtain standard dentin surfaces. The specimens were randomly assigned to 6 groups (n=13). Clearfil SE Bond, AdheSE and One-Up Bond F adhesive systems at refrigerated (4ºC) and room temperatures (23ºC) were applied to dentin according to the manufacturers' instructions. A truncated composite resin (Herculite XRV) cone was bonded to dentin surface. The specimens were stored in distilled water at 37ºC for 24 h and submitted to tensile bond strength testing at a crosshead speed of 0.5 mm/min. Means in MPa were analyzed statistically by Student's t-test at 5% significance level. No statistically significant differences (p>0.05) were found between the adhesive systems applied at refrigerated and room temperatures. In conclusion, no adverse effects on tensile bond strength were observed when self-etching adhesive systems were used after being taken directly from the refrigerated storage.

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Tensile bond strength of self-etching versus total-etching adhesive systems under different dentinal substrate conditions

Brazilian Oral Research ◽

10.1590/s1806-83242007000100014 ◽

2007 ◽

Vol 21 (1) ◽

pp. 81-86 ◽

Cited By ~ 18

Author(s):

Alexandre Henrique Susin ◽

Walison Arthuso Vasconcellos ◽

José Roberto Cury Saad ◽

Osmir Batista de Oliveira Junior

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Tensile Bond Strength ◽

Strength Testing ◽

Single Bond ◽

Third Molars ◽

Adhesive Systems ◽

Collagen Network ◽

Hybrid Layer ◽

Total Etching

The use of acid etchants to produce surface demineralization and collagen network exposure, allowing adhesive monomers interdiffusion and consequently the formation of a hybrid layer, has been considered the most efficient mechanism of dentin bonding. The aim of this study was to compare the tensile bond strength to dentin of three adhesive systems, two self-etching ones (Clearfil SE Bond - CSEB and One Up Bond F - OUBF) and one total-etching one (Single Bond - SB), under three dentinal substrate conditions (wet, dry and re-wet). Ninety human, freshly extracted third molars were sectioned at the occlusal surface to remove enamel and to form a flat dentin wall. The specimens were restored with composite resin (Filtek Z250) and submitted to tensile bond strength testing (TBS) in an MTS 810. The data were submitted to two-way ANOVA and Tukey's test (p = 0.05). Wet dentin presented the highest TBS values for SB and CSEB. Dry dentin and re-wet produced significantly lower TBS values when using SB. OUBF was not affected by the different conditions of the dentin substrate, producing similar TBS values regardless of the surface pretreatments.

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The effect of enamel moisture on tensile bond strength of composite resin using Single bond in total etch technique

Iranian Journal of Pediatric Dentistry ◽

10.29252/ijpd.10.1.59 ◽

2014 ◽

Vol 10 (1) ◽

pp. 59-68

Author(s):

H Afshar ◽

M Ghandehari ◽

S Amiri ◽

Z Mirzayi ◽

M Pourali ◽

...

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Tensile Bond Strength ◽

Single Bond

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Thermal insulation products for building applications. Determination of the tensile bond strength of the adhesive and of the base coat to the thermal insulation material

10.3403/02679458 ◽

2002 ◽

Keyword(s):

Bond Strength ◽

Thermal Insulation ◽

Tensile Bond Strength ◽

Insulation Material ◽

Thermal Insulation Material

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Properties of Calcium Sulfoaluminate Cement Mortar Modified by Hydroxyethyl Methyl Celluloses with Different Degrees of Substitution

Molecules ◽

10.3390/molecules26082136 ◽

2021 ◽

Vol 26 (8) ◽

pp. 2136

Author(s):

Shaokang Zhang ◽

Ru Wang ◽

Linglin Xu ◽

Andreas Hecker ◽

Horst-Michael Ludwig ◽

...

Keyword(s):

Compressive Strength ◽

Flexural Strength ◽

Bond Strength ◽

Cement Mortar ◽

Retention Rate ◽

Methyl Cellulose ◽

Tensile Bond Strength ◽

Calcium Sulfoaluminate Cement ◽

Calcium Sulfoaluminate ◽

Cement Mortars

This paper studies the influence of hydroxyethyl methyl cellulose (HEMC) on the properties of calcium sulfoaluminate (CSA) cement mortar. In order to explore the applicability of different HEMCs in CSA cement mortars, HEMCs with higher and lower molar substitution (MS)/degree of substitution (DS) and polyacrylamide (PAAm) modification were used. At the same time, two kinds of CSA cements with different contents of ye’elimite were selected. Properties of cement mortar in fresh and hardened states were investigated, including the fluidity, consistency and water-retention rate of fresh mortar and the compressive strength, flexural strength, tensile bond strength and dry shrinkage rate of hardened mortar. The porosity and pore size distribution were also analyzed by mercury intrusion porosimetry (MIP). Results show that HEMCs improve the fresh state properties and tensile bond strength of both types of CSA cement mortars. However, the compressive strength of CSA cement mortars is greatly decreased by the addition of HEMCs, and the flexural strength is decreased slightly. The MIP measurement shows that HEMCs increase the amount of micron-level pores and the porosity. The HEMCs with different MS/DS have different effects on the improvement of tensile bond strength in different CSA cement mortars. PAAm modification can improve the tensile bond strength of HEMC-modified CSA cement mortar.

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