{"id":{"repo_id":"dut","oai_identifier":"oai:openscholar.dut.ac.za:10321/430"},"canonical_url":"https://search.dev.ndltd.org/etd/dut/oai:openscholar.dut.ac.za:10321/430","repository":{"repo_id":"dut","name":"Durban University of Technology","base_url":"https://openscholar.dut.ac.za/server/oai/request"},"display":{"title":"Design and evaluation of alumina/feldspar resin infiltrated dental composite materials","abstract":"Submitted in fulfillment of the degree of Doctor of Dental Material Science in the Durban University of Technology, Durban, South Africa, 2008.","abstract_html":"Submitted in fulfillment of the degree of Doctor of Dental Material Science in the Durban University of Technology, Durban, South Africa, 2008.","abstract_has_math":false,"creators":["Le Roux, Andre Rayne"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Lachman, Nirusha","Walker, Mark","Botha, C. Theo"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2009,"date_issued":"2009-06-02T11:59:35Z","date_published":"2009-06-02T11:59:35Z","updated_at":"2026-07-27T19:20:43Z","subjects":["Dental bonding","Composite materials","Dental materials"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["315106","https://doi.org/10.51415/10321/430"],"render_values":[{"text":"315106","href":null,"code":true},{"text":"https://doi.org/10.51415/10321/430","href":"https://doi.org/10.51415/10321/430","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10321/430","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lachman, Nirusha","Walker, Mark","Botha, C. Theo"]},{"key":"dc:creator","label":"Author","values":["Le Roux, Andre Rayne"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2009-06-02T11:59:35Z","2008"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Dental bonding","Composite materials","Dental materials"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["315106","http://hdl.handle.net/10321/430","https://doi.org/10.51415/10321/430"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submitted in fulfillment of the degree of Doctor of Dental Material Science in the Durban University of Technology, Durban, South Africa, 2008.","Introduction: Incorporating a feldspar chemical bond between alumina filler particles is expected to increase the wear resistant and flexural strength properties, while reducing flexibility of dental composites. Aims and Objectives: An investigation was carried out to evaluate the influence of the feldspar chemical bonding between alumina filler particles on wear, flexural strength and flexibility of experimental alumina/feldspar dental composites. It was hypothesized that wear resistance and flexural strength would be significantly increased with increased feldspar mass, while flexibility was expected to decrease. Methods: Alumina was chemically sintered and bonded with 30%, 40%, 50% and 60% feldspar mass, silanized and infiltrated with UDMA resin to prepare the dental restorative composite material specimens. Results and conclusions: Significantly higher wear resistant characteristics resulted with increased feldspar mass (p<0.5). Improvements in flexural strength characteristics as the feldspar mass was increased was not statistically different (p>0.5). Flexibility characteristics as the feldspar mass was increased was not statistically different (p>0.5). The alumina/feldspar specimens showed lower flexibility (mm displacement) than SR ADORO (p<0.05). Feldspar chemical bonding between the alumina particles may improve on the wear resistance and Flexibility of alumina/feldspar composites when compared to SR ADORO. This study evaluated the influence of a chemical feldspar bond between alumina filler particles.","D"]},{"key":"dc:format","label":"Dc Format","values":["205 p","application/pdf"]},{"key":"dc:title","label":"Title","values":["Design and evaluation of alumina/feldspar resin infiltrated dental composite materials"]}]}],"canonical_facts":{"dc:contributor":["Lachman, Nirusha","Walker, Mark","Botha, C. Theo"],"dc:creator":["Le Roux, Andre Rayne"],"dc:date":["2009-06-02T11:59:35Z","2008"],"dc:description":["Submitted in fulfillment of the degree of Doctor of Dental Material Science in the Durban University of Technology, Durban, South Africa, 2008.","Introduction: Incorporating a feldspar chemical bond between alumina filler particles is expected to increase the wear resistant and flexural strength properties, while reducing flexibility of dental composites. Aims and Objectives: An investigation was carried out to evaluate the influence of the feldspar chemical bonding between alumina filler particles on wear, flexural strength and flexibility of experimental alumina/feldspar dental composites. It was hypothesized that wear resistance and flexural strength would be significantly increased with increased feldspar mass, while flexibility was expected to decrease. Methods: Alumina was chemically sintered and bonded with 30%, 40%, 50% and 60% feldspar mass, silanized and infiltrated with UDMA resin to prepare the dental restorative composite material specimens. Results and conclusions: Significantly higher wear resistant characteristics resulted with increased feldspar mass (p<0.5). Improvements in flexural strength characteristics as the feldspar mass was increased was not statistically different (p>0.5). Flexibility characteristics as the feldspar mass was increased was not statistically different (p>0.5). The alumina/feldspar specimens showed lower flexibility (mm displacement) than SR ADORO (p<0.05). Feldspar chemical bonding between the alumina particles may improve on the wear resistance and Flexibility of alumina/feldspar composites when compared to SR ADORO. This study evaluated the influence of a chemical feldspar bond between alumina filler particles.","D"],"dc:format":["205 p","application/pdf"],"dc:identifier":["315106","http://hdl.handle.net/10321/430","https://doi.org/10.51415/10321/430"],"dc:language":["en"],"dc:subject":["Dental bonding","Composite materials","Dental materials"],"dc:title":["Design and evaluation of alumina/feldspar resin infiltrated dental composite materials"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T19:20:43Z"}