Search results for "Intertubular dentin"

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The Use of Atomic Force Microscopy in Determining the Stiffness and Adhesion Force of Human Dentin After Exposure to Bleaching Agents

2009

Introduction: Oxidant bleaching agents may induce several alterations on mineralized teeth tissues. Our aim is to study,at the ultrastructurallevel,mechanicalmodifications induced on dentin after exposure to different bleaching agents.Methods: Nanoindentation performed with atomic force microscopy was used to measure changes in dentin stiffness as well as the adhesion force between the tip and the tissue both in intertubular and peritubulardentin.Foreachspecimen,dentinlocalization, and bleaching agent, 100 independent nanoindentations were performed. Carbamide peroxide (30%) and hydrogenperoxide(35%) wereusedasbleaching agents. Results: A significant reduction of both stiffness and adhesion…

Materials scienceDentistryCarbamide PeroxideMicroscopy Atomic Forcechemistry.chemical_compoundstomatognathic systemHardnessElastic ModulusMaterials TestingImage Processing Computer-AssistedTooth BleachingmedicineDentinHumansUreaAdhesion forceHydrogen peroxideGeneral DentistryAtomic force microscopybusiness.industryStiffnessHydrogen PeroxideNanoindentationOxidantsPeroxidesDrug Combinationsmedicine.anatomical_structurechemistryIntertubular dentinDentinStress Mechanicalsense organsCarbamide peroxidemedicine.symptombusinessAlgorithmsBiomedical engineeringJournal of Endodontics

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