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Interpretation of bond failure through conversion and residual solvent measurements and Weibull analyses of flexural and microtensile bond strengths of bonding agents.
DC Field | Value | Language |
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dc.contributor.author | Cho, Byeong Hoon | - |
dc.contributor.author | Dickens, Sabine H | - |
dc.date.accessioned | 2010-09-03T05:04:50Z | - |
dc.date.available | 2010-09-03T05:04:50Z | - |
dc.date.issued | 2005-04 | - |
dc.identifier.citation | DENTAL MATERIALS 2005;21:354-364 | en |
dc.identifier.issn | 0109-5641 | - |
dc.identifier.uri | https://hdl.handle.net/10371/69655 | - |
dc.description.abstract | Objectives: An inverse correlation between initial acetone content of bonding agents and microtensile bond strength (MTBS) has previously been reported. Here it was investigated whether the inferior MTBS of acetone-rich bonding agents was caused by flaws and low adhesive layer strength, insufficient to resist polymerization shrinkage stresses of the overlying composite.
Methods: Bonding solutions with (27–67) mass fraction% acetone were dried for 10 s or 30 min. Specimens for infrared (IR) spectroscopy and flexural strength (FS) were cured for 10 s (cure mode 1) to represent the adhesive layer properties when polymerizing the composite resin or for 10 s plus an additional 60 s through composite resin (cure mode 2) to represent adhesive layer properties when testing the bond strength. Degree of conversion (DC) and residual acetone content were evaluated for films by mid-IR and bulk specimens by near-IR spectroscopy. FS and MTBS data using these bonding solutions were interpreted by Weibull statistics and ANOVA (α=0.05). Results: In bulk specimens, initial and residual acetone content were positively correlated (P=0.003). FS in cure mode 1 was significantly lower than in cure mode 2 and decreased with increasing initial acetone content, while DC remained consistent, suggesting pores from acetone evaporation as flaw initiating sites affecting the mechanical adhesive properties. Significance: From DC and Weibull analyses of MTBS and FS, early low strength of the adhesive layer and shrinkage stresses acting on pre-existing flaws are suggested as critical factors affecting the dentin/adhesive bond strength. | en |
dc.language.iso | en | en |
dc.publisher | Elsevier | en |
dc.subject | Single solution dentin bonding agent | en |
dc.subject | Solvent concentration | en |
dc.subject | Flexural strength | en |
dc.subject | Residual acetone content | en |
dc.subject | Degree of conversion | en |
dc.subject | Microtensile bond strength | en |
dc.subject | Weibull analysis | en |
dc.subject | Crack formation | en |
dc.title | Interpretation of bond failure through conversion and residual solvent measurements and Weibull analyses of flexural and microtensile bond strengths of bonding agents. | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 조병훈 | - |
dc.identifier.doi | 10.1016/j.dental.2004.05.007 | - |
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