Insights into "bonding" of all-ceramics influenced by cement, sandblasting and water storage time

Dental Materials : Official Publication of the Academy of Dental Materials
Patchanee Rungruanganunt, J Robert Kelly

Abstract

Bonding of all-ceramic restorations has become routine practice mainly due to results from clinical studies. Sandblasting has been advocated for surface treatment of many ceramics, based on results from numerous in vitro studies. This present work examines the influence of bonding on fracture loads of a veneered alumina ceramic using both chemical and sandblasting treatments. Veneered tabs (In-Ceram alumina) were cemented (50 μm; ZnPO(4) or Panavia 21) to dentin-analog bases designed to allow water penetration to the cement/dentin interface. 60 specimens were fabricated for 2 weeks storage and another 80 specimens for 6 months storage (water, 37°C). Half of each group was tested "as-finished" and the other half "as-sandblasted", each divided between two cements. Specimens were loaded cyclically (20 Hz, 500,000) cycles in water beneath a 3mm diameter piston. A staircase sensitivity protocol was followed, using a step size of 25 N. Specimens were examined for cracking by transillumination (10×). Mean failure loads differed significantly between (1) as-finished Panavia versus zinc phosphate at 2 weeks; (2) as-finished versus sandblasted at 2 weeks; and (3) as-finished at 6 months versus 2 weeks (ANOVA, 95% post hoc test). Sandblas...Continue Reading

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Citations

Aug 27, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·Liliana G May, J Robert Kelly
Dec 24, 2011·Dental Materials : Official Publication of the Academy of Dental Materials·J Robert KellyAlvaro Della Bona
Aug 15, 2015·Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research·Behnaz EsmaeiliMohadese Shakerian
Jan 15, 2016·PloS One·Goro NishigawaShogo Minagi
Dec 21, 2012·Journal of Investigative and Clinical Dentistry·Sreekanth K MallineniNigel M King
Mar 7, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Andrzej MalysaMieszko Wieckiewicz

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