Mechanical characterization of proanthocyanidin-dentin matrix interaction.

Dental Materials : Official Publication of the Academy of Dental Materials
Carina S CastellanAna K Bedran-Russo

Abstract

To characterize the properties of dentin matrix treated with two proanthocyanidin rich cross-linking agents and their effect on dentin bonded interfaces. Sound human molars were cut into 0.5 mm thick dentin slabs, demineralized and either treated with one of two cross-linking agents (grape seed-GSE and cocoa seed-COE extracts) or left untreated. The modulus of elasticity of demineralized dentin was assessed after 10 or 60 min and the swelling ratio after 60 min treatment. Bacterial collagenase was also used to assess resistance to enzymatic degradation of samples subjected to ultimate tensile strength. The effect of GSE or COE on the resin-dentin bond strength was evaluated after 10 or 60 min of exposure time. Data were statistically analyzed at a 95% confidence interval. Both cross-linkers increased the elastic modulus of demineralized dentin as exposure time increased. Swelling ratio was lower for treated samples when compared to control groups. No statistically significant changes to the UTS indicate that collagenase had no effect on dentin matrix treated with either GSE or COE. Resin-dentin bonds significantly increased following treatment with GSE regardless of the application time or adhesive system used. Increased mechan...Continue Reading

Citations

Oct 8, 2011·Journal of Materials Science. Materials in Medicine·Ruirui LiuJihua Chen
Aug 15, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·Noriko HiraishiJunji Tagami
Dec 7, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·Ana K Bedran-RussoAriene A Leme
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Sep 10, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Md Sofiqul IslamJunji Tagami
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Jan 9, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Andrea FrassettoMilena Cadenaro
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