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Title: Wear and flexural strength comparisons of alumina/feldspar resin infiltrated dental composites
Authors: Le Roux, Andre Rayne
Lachman, Nirusha 
Walker, Mark 
Botha, T. 
Keywords: Dentistry;Feldspar chemical bonding;Alumina filler particles;Wear resistance
Issue Date: 2008
Publisher: South African Dental Association
Introduction: Incorporating a feldspar chemical bond between alumina filler particles is expected to increase the wear-resistant and flexural strength properties.
Aims and Objectives: An investigation was carried out to evaluate the influence of the feldspar chemical bonding between alumina filler particles on wear and flexural strength of experimental alumina/feldspar dental composites. It was hypothesized that wear resistance and flexural strength would be significantly increased with increased feldspar mass.
Methods: Alumina was chemically sintered and bonded with 30% and 60% feldspar mass, silanized and infiltrated with UDMA resin to prepare the dental restorative composite material.
Results and conclusions: Higher wear-resistant characteristics
resulted with increased feldspar mass of up to 60% (p<0.05). Higher flexural strength characteristics resulted as the feldspar mass was increased up to 60% (p>0.05). Feldspar
chemical bonding between the alumina particles may improve on the wear-resistance and flexural strength of alumina/
feldspar composites.
Originally published in: South African dental journal, November 2008, Vol. 63, No. 10, 2008.
Appears in Collections:Research Publications (Health Sciences)

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