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Improved dental adhesive formulations based on reactive nanogel additives
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نویسنده
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morães r.r. ,garcia j.w. ,wilson n.d. ,lewis s.h. ,barros m.d. ,yang b. ,pfeifer c.s. ,stansbury j.w.
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منبع
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journal of dental research - 2012 - دوره : 91 - شماره : 2 - صفحه:179 -184
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چکیده
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Current challenges in adhesive dentistry include over-hydrophilic bonding formulations,which facilitate water percolation through the hybrid layer and result in unreliable bonded interfaces. this study introduces nanogel-modified adhesives as a way to control the material's hydrophobic character without changing the basic monomer formulation (keeping water-chasing capacity and operatory techniques unaltered). nanogel additives of varied hydrophobicity were synthesized in solution,rendering 10- to 100-nm-sized particles. a model bisgma/hema solvated adhesive was prepared (control),to which reactive nanogels were added. the increase in adhesive viscosity did not impair solvent removal by air-thinning. the degree of conversion in the adhesive was similar between control and nanogel-modified materials,while the bulk dry and,particularly,the wet mechanical properties were significantly improved through nanogel-based network reinforcement and reduced water solubility. as preliminary validation of this approach,short-term micro-tensile bond strengths to acid-etched and primed dentin were significantly enhanced by nanogel inclusion in the adhesive resins. © 2012 international & american associations for dental research.
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کلیدواژه
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adhesives; materials science(s); nanoparticles; polymers; restorative dentistry; water
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آدرس
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federal university of pelotas, Brazil, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States, school of dental medicine,university of colorado denver,12800 e 19th ave.,ms 8310,aurora,co 80045, United States
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Authors
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