Zihou Zhang1, Dylan Beitzel1, Hessam Majd1, Mustafa Mutluay2, Arzu Tezvergil-Mutluay2, Franklin R Tay3, David H Pashley4, Dwayne Arola5. 1. Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, MD, USA. 2. Adhesive Dentistry Research Group, Department of Cariology, Institute of Dentistry, University of Turku, Turku, Finland. 3. Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA; Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA. 4. Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA. 5. Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Departments of Oral Health Sciences and Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA USA. Electronic address: darola@uw.edu.
Abstract
The application of a cross-linker to demineralized dentin is reportedly effective at extending the durability of dentin bonds. OBJECTIVE: To compare the effect of a cross-linker pretreatment on the fatigue crack growth resistance of resin-dentin bonds prepared with a two- vs. three-step adhesive system. METHODS: Bonded interface Compact Tension (CT) specimens were prepared using commercial two- and three-step etch-and-rinse adhesives and compatible hybrid resin-composite. For the treated groups, adhesive bonding was preceded by a 1min application of an experimental carbodiimide (EDC) conditioner to the acid-etched dentin. The control groups received no such treatment. The fatigue crack growth resistance was examined after storage in artificial saliva at 37°C for 0, 3 and 6 months. RESULTS: There was no significant difference in the immediate fatigue crack growth resistance the control and EDC-treated groups at 0 months for either adhesive system. After 3 and 6 months of storage, the EDC-treated groups exhibited significantly greater (p≤0.05) fatigue crack growth resistance than the controls. Although the EDC treatment was equally effective in deterring degradation for both adhesives, bonds prepared with the three-step system exhibited the lowest resistance to fatigue crack growth overall. SIGNIFICANCE: An EDC treatment applied during dentin bonding could help maintain the durability of bonds prepared with two or three-step adhesive bonding systems.
The application of a cross-linker to demineralized dentin is reportedly effective at extending the durability of dentin bonds. OBJECTIVE: To compare the effect of a cross-linker pretreatment on the fatigue crack growth resistance of resin-dentin bonds prepared with a two- vs. three-step adhesive system. METHODS: Bonded interface Compact Tension (CT) specimens were prepared using commercial two- and three-step etch-and-rinse adhesives and compatible hybrid resin-composite. For the treated groups, adhesive bonding was preceded by a 1min application of an experimental carbodiimide (EDC) conditioner to the acid-etched dentin. The control groups received no such treatment. The fatigue crack growth resistance was examined after storage in artificial saliva at 37°C for 0, 3 and 6 months. RESULTS: There was no significant difference in the immediate fatigue crack growth resistance the control andEDC-treated groups at 0 months for either adhesive system. After 3 and 6 months of storage, the EDC-treated groups exhibited significantly greater (p≤0.05) fatigue crack growth resistance than the controls. Although the EDC treatment was equally effective in deterring degradation for both adhesives, bonds prepared with the three-step system exhibited the lowest resistance to fatigue crack growth overall. SIGNIFICANCE: An EDC treatment applied during dentin bonding could help maintain the durability of bonds prepared with two or three-step adhesive bonding systems.
Authors: Juliana Malacarne; Ricardo M Carvalho; Mario F de Goes; Nadia Svizero; David H Pashley; Franklin R Tay; Cynthia K Yiu; Marcela Rocha de Oliveira Carrilho; Marcela Rocha de Oliveira Carrilho Journal: Dent Mater Date: 2006-01-06 Impact factor: 5.304
Authors: Milena Cadenaro; Luca Fontanive; Chiara Ottavia Navarra; Pietro Gobbi; Annalisa Mazzoni; Roberto Di Lenarda; Franklin R Tay; David H Pashley; Lorenzo Breschi Journal: Dent Mater Date: 2016-01-05 Impact factor: 5.304