PURPOSE: The addition of anionic charge on denture base resins has been shown to inhibit Candida albicans adhesion and to facilitate adsorption of salivary defense molecules. The aim of this study was to evaluate the physical properties of a modified denture base resin for denture fabrication. MATERIALS AND METHODS: Specimens made from heat polymerizing resin Lucitone 199 were used as the control group. The two experimental groups, E-10 and E-20, had 10% and 20%, respectively, of the monomer substituted with an experimental phosphate-containing monomer. Flexural strength and modulus, water sorption, solubility, and color stability tests were conducted to ensure compliance with ADA specification No. 12. Water diffusion coefficient into the resins and stainability were also assessed. ANOVA and Scheffé tests were performed for statistical significance. RESULTS: There was an overall decline in all properties with the addition of the experimental phosphate compound. The flexural strength and modulus, water sorption and solubility for E-10, as well as the control were, however, within the ADA specifications. The diffusion coefficients were significantly different (p < 0.05) for the three groups. Staining and color specimens showed no significant difference (p > 0.05) among the three groups. CONCLUSIONS: Within the limitations of this study, the physical properties of the phosphate denture base resin at 10% should be suitable for denture fabrication based on the properties assessed.
PURPOSE: The addition of anionic charge on denture base resins has been shown to inhibit Candida albicans adhesion and to facilitate adsorption of salivary defense molecules. The aim of this study was to evaluate the physical properties of a modified denture base resin for denture fabrication. MATERIALS AND METHODS: Specimens made from heat polymerizing resin Lucitone 199 were used as the control group. The two experimental groups, E-10 and E-20, had 10% and 20%, respectively, of the monomer substituted with an experimental phosphate-containing monomer. Flexural strength and modulus, water sorption, solubility, and color stability tests were conducted to ensure compliance with ADA specification No. 12. Water diffusion coefficient into the resins and stainability were also assessed. ANOVA and Scheffé tests were performed for statistical significance. RESULTS: There was an overall decline in all properties with the addition of the experimental phosphate compound. The flexural strength and modulus, water sorption and solubility for E-10, as well as the control were, however, within the ADA specifications. The diffusion coefficients were significantly different (p < 0.05) for the three groups. Staining and color specimens showed no significant difference (p > 0.05) among the three groups. CONCLUSIONS: Within the limitations of this study, the physical properties of the phosphate denture base resin at 10% should be suitable for denture fabrication based on the properties assessed.
Authors: Shi-qiang Gong; Li-Na Niu; Lisa K Kemp; Cynthia K Y Yiu; Heonjune Ryou; Yi-Pin Qi; John D Blizzard; Sergey Nikonov; Martha G Brackett; Regina L W Messer; Christine D Wu; Jing Mao; L Bryan Brister; Frederick A Rueggeberg; Dwayne D Arola; David H Pashley; Franklin R Tay Journal: Acta Biomater Date: 2012-05-29 Impact factor: 8.947
Authors: Gaurav Puri; David W Berzins; Virendra B Dhuru; Periathamby A Raj; Sameer K Rambhia; Gunjan Dhir; Andrew R Dentino Journal: J Prosthet Dent Date: 2008-10 Impact factor: 3.426
Authors: Mohammed M Gad; Ahmed Rahoma; Reem Abualsaud; Ahmad M Al-Thobity; Sultan Akhtar; Intisar A Siddiqui; Fahad A Al-Harbi Journal: J Clin Exp Dent Date: 2020-04-01
Authors: Eduardo B Moffa; Maria C M Mussi; Yizhi Xiao; Saulo S Garrido; Maria A A M Machado; Eunice T Giampaolo; Walter L Siqueira Journal: Front Microbiol Date: 2015-08-28 Impact factor: 5.640
Authors: Ricardo Dias de Castro; Ana Carolina Loureiro Gama Mota; Edeltrudes de Oliveira Lima; André Ulisses Dantas Batista; Julyana de Araújo Oliveira; Alessandro Leite Cavalcanti Journal: BMC Oral Health Date: 2015-04-28 Impact factor: 2.757