Comparative study of the dental substrate used in shear bond strength tests

Lopes, Murilo Baena; Sinhoreti, Mário Alexandre Coelho; Sobrinho, Lourenço Correr; Consani, Símonídes

doi:10.1590/s1517-74912003000200014

Cited by 41 publications

(50 citation statements)

References 14 publications

(11 reference statements)

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“…ARI 0 = no adhesive left on the tooth; ARI 1 = less than half of adhesive left on the tooth; ARI 2 = more than half of adhesive left on the tooth; ARI 3 = all adhesive left on the tooth, with distinct bracket mesh impression. Bovine enamel is commonly used in bonding studies because of the advances in dental health and conservative dentistry as well as the limits in the access to human teeth (16,17). Relatively lower SBS values found in this study can be justified by the fact that bovine teeth present weaker bond strength than human teeth (16).…”

Section: Discussionmentioning

confidence: 66%

Effect of etching and light-curing time on the shear bond strength of a resin-modified glass ionomer cement

et al. 2010

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The aim of this study was to assess the influence of etching and light-curing time on the shear bond strength (SBS) and adhesive remnant index (ARI) of a resin-modified glass ionomer cement (RMGIC) upon debonding of orthodontic brackets. Sixty-eight bovine permanent incisors were obtained and embedded in acrylic resin. Edgewise metallic brackets were bonded to the teeth with Fuji Ortho LC RMGIC. The specimens were randomly assigned to 4 groups, using the following etching and light-curing times: G1: 10% polyacrylic acid and 40 s (control); G2: 37% phosphoric acid and 40 s; G3: 10% polyacrylic acid and 50 s; and G4: 37% phosphoric acid and 50 s. Shear test was performed at 0.5 mm/min and the ARI was assessed. G2 (3.6 ± 0.98 MPa) presented significantly higher (p<0.05) SBS than G1 (2.76 ± 0.86 MPa) and G4 (2.86 ± 0.68 MPa), and there was no statistically significant difference (p>0.05) between G2 and G3 (2.94 ± 0.67 MPa). ARI presented prevalence of scores 2 and 3 in all groups. RMGIC SBS enhanced with 37% phosphoric acid etching and 40 s light-curing time, but this did not occur when the light-curing time was increased, regardless of the acid used. RMGIC presented prevalence of failures at the adhesive/bracket interface.

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Section: Discussionmentioning

confidence: 66%

Effect of etching and light-curing time on the shear bond strength of a resin-modified glass ionomer cement

et al. 2010

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“…Moreover, it should be considered that shear bond strength values in the present study might be higher than in the presence of intrapulpal pressure simulation [10,11]. However, as relative differences rather than absolute values are of interest, the use of bovine dentin in adhesion testingeven without simulation of intrapulpal pressure -is widely accepted [12][13][14].…”

Section: Discussionmentioning

confidence: 95%

Influence of caries infiltrant contamination on shear bond strength of different adhesives to dentin

et al. 2012

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OBJECTIVES: To analyze whether the contamination with a caries infiltrant system impairs the adhesive performance of etch-and-rinse and self-etching adhesives on dentin. MATERIALS AND METHODS: Dentin contamination with the caries infiltrant system (Icon, DMG) was simulated by applying either hydrochloric acid (15 % HCl, Icon Etch, 15 s), the resin infiltrant (Icon infiltrant, 4 min), or both prior to the application of the respective adhesives (each group n = 10). In the control groups, the etch-and-rinse adhesive (Optibond FL, Kerr) and the self-etching adhesive (iBOND Self Etch, Hereaus) were applied without former contamination with the infiltrant system. Additionally, the adhesive performance of the resin infiltrant alone was tested. Shear bond strength of a nano-hybrid composite was analyzed after thermocycling (5,000×, 5-55°C) of the specimens and analyzed by ANOVA/Scheffé post hoc tests (p < 0.05) and Weibull statistics. Failure mode was inspected under a stereomicroscope at × 25 magnification. RESULTS: Contamination with the resin infiltrant alone did not impair shear bond strength, while contamination with hydrochloric acid or with hydrochloric acid and the resin infiltrant reduced shear bond strength (MPa) of the adhesives (Optibond FL: 20.5 ± 3.6, iBOND Self Etch: 17.9 ± 2.6) significantly. Hydrochloric acid contamination increased the number of adhesive failures. The adhesive performance of the caries infiltrant system alone was insufficient. CONCLUSION: The contamination with the caries infiltrant system impaired the shear bond strength of conventional dental adhesives. CLINICAL RELEVANCE: Contamination of the caries infiltrant system on dentin should be avoided due to the detrimental effect of hydrochloric acid etching. Clinical relevance: Contamination of the caries infiltrant system on dentin should be avoided due to the detrimental effect of hydrochloric acid etching.3

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“…Bonding/adhesive strength studies Table 3 depicts the 17 in vitro studies reviewed in this category (65)(66)(67)(68)(69)(70)(71)(72)(73)(74)(75)(76)(77)(78)(79)(80)(81). Three studies tested only human and bovine enamel (65)(66)(67).…”

Section: Dental Erosion/abrasion Studiesmentioning

confidence: 99%

“…Three studies tested only human and bovine enamel (65)(66)(67). Eight studies compared both enamel and dentin of human and bovine teeth (68)(69)(70)(71)(72)(73)(74)(75). The remaining six studies compared only dentin bond strength between human and bovine teeth (76)(77)(78)(79)(80)(81).…”

Section: Dental Erosion/abrasion Studiesmentioning

confidence: 99%

Bovine teeth as substitute for human teeth in dental research: a review of literature

2011

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The aim of this paper was to review in vitro and in situ studies that directly compared the use of bovine teeth as a substitute for human teeth in dental experiments. A PubMed search was conducted for papers published from 1953 to December 30, 2010 using the following keywords: "human bovine enamel" or "human bovine dentin" or "human bovine teeth". The abstracts of the studies resulting from the keyword search were read, and all papers that compared human and bovine teeth were fully read. Only original articles written in English and directly comparing human and bovine substrates were included in the review. The search was supplemented by manual searches of the reference lists from each identified paper. Out of 76 studies initially selected, 68 fulfilled the selection criteria for inclusion. The studies covered seven categories: dental morphology, chemical composition, physical properties, dental caries, dental erosion/abrasion, bonding/adhesive strength, and marginal microleakage. Inconsistent data exist regarding whether bovine teeth can be considered an appropriate substitute for human teeth in dental research. Morphological, chemical composition and physical property differences between the two substrates must be considered when interpreting results obtained from any experiment using bovine tooth substrate. (J Oral Sci 53, 273-282, 2011)

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Comparative study of the dental substrate used in shear bond strength tests

Cited by 41 publications

References 14 publications

Effect of etching and light-curing time on the shear bond strength of a resin-modified glass ionomer cement

Effect of etching and light-curing time on the shear bond strength of a resin-modified glass ionomer cement

Influence of caries infiltrant contamination on shear bond strength of different adhesives to dentin

Bovine teeth as substitute for human teeth in dental research: a review of literature

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