{"title":"Al2O3/ Y-TSZ混合填料对PMMA义齿基托复合材料放射透明度的影响","authors":"A.O. Alhareb , H.M. Akil , Z.A. Ahmad","doi":"10.1016/j.proche.2016.03.065","DOIUrl":null,"url":null,"abstract":"<div><p>The radiopacity of alumina/yttrium stabilizer zirconia (Al<sub>2</sub>O<sub>3</sub>/Y-TSZ) particles with nitrile butadiene rubber (NBR) dispersed in PMMA denture base material has been investigated. PMMA matrix without filler was prepared from PMMA powder with 0.5% benzoyl peroxide (PBO) as the control material. The similar PMMA matrix was mixed with Al<sub>2</sub>O<sub>3</sub>/Y-TSZ (1:1) together with NBR particles as the reinforcement. The amount of NBR was fixed at 7.5<!--> <!-->wt %, however, Al<sub>2</sub>O<sub>3</sub>/Y-TSZ varied from 1 to 10<!--> <!-->wt %, respectively. Samples with 4<!--> <!-->mm thickness for each composition were irradiated using 60 KV, 10<!--> <!-->mA, 0.4 s to examine their radiopacity. This radiopacity was compared to radiopacity of aluminum plate which having the same thickness. The result shows that the radiopacity (i.e. the lower optical density the higher radiopacity) of reinforced PMMA matrix slightly increased from 1.40 to 1.05, respectively, with the increased of filler loading compared to unreinforced PMMA matrix.</p></div>","PeriodicalId":20431,"journal":{"name":"Procedia Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.065","citationCount":"8","resultStr":"{\"title\":\"Influence of Al2O3/ Y-TSZ Mixture as Filler Loading on the Radiopacity of PMMA Denture Base Composites\",\"authors\":\"A.O. Alhareb , H.M. Akil , Z.A. Ahmad\",\"doi\":\"10.1016/j.proche.2016.03.065\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The radiopacity of alumina/yttrium stabilizer zirconia (Al<sub>2</sub>O<sub>3</sub>/Y-TSZ) particles with nitrile butadiene rubber (NBR) dispersed in PMMA denture base material has been investigated. PMMA matrix without filler was prepared from PMMA powder with 0.5% benzoyl peroxide (PBO) as the control material. The similar PMMA matrix was mixed with Al<sub>2</sub>O<sub>3</sub>/Y-TSZ (1:1) together with NBR particles as the reinforcement. The amount of NBR was fixed at 7.5<!--> <!-->wt %, however, Al<sub>2</sub>O<sub>3</sub>/Y-TSZ varied from 1 to 10<!--> <!-->wt %, respectively. Samples with 4<!--> <!-->mm thickness for each composition were irradiated using 60 KV, 10<!--> <!-->mA, 0.4 s to examine their radiopacity. This radiopacity was compared to radiopacity of aluminum plate which having the same thickness. The result shows that the radiopacity (i.e. the lower optical density the higher radiopacity) of reinforced PMMA matrix slightly increased from 1.40 to 1.05, respectively, with the increased of filler loading compared to unreinforced PMMA matrix.</p></div>\",\"PeriodicalId\":20431,\"journal\":{\"name\":\"Procedia Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.065\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Procedia Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S187661961600111X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Procedia Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S187661961600111X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Influence of Al2O3/ Y-TSZ Mixture as Filler Loading on the Radiopacity of PMMA Denture Base Composites
The radiopacity of alumina/yttrium stabilizer zirconia (Al2O3/Y-TSZ) particles with nitrile butadiene rubber (NBR) dispersed in PMMA denture base material has been investigated. PMMA matrix without filler was prepared from PMMA powder with 0.5% benzoyl peroxide (PBO) as the control material. The similar PMMA matrix was mixed with Al2O3/Y-TSZ (1:1) together with NBR particles as the reinforcement. The amount of NBR was fixed at 7.5 wt %, however, Al2O3/Y-TSZ varied from 1 to 10 wt %, respectively. Samples with 4 mm thickness for each composition were irradiated using 60 KV, 10 mA, 0.4 s to examine their radiopacity. This radiopacity was compared to radiopacity of aluminum plate which having the same thickness. The result shows that the radiopacity (i.e. the lower optical density the higher radiopacity) of reinforced PMMA matrix slightly increased from 1.40 to 1.05, respectively, with the increased of filler loading compared to unreinforced PMMA matrix.
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