Flexural properties of a light-cure and a self-cure denture base materials compared to conventional alternatives
2
조회
0
다운로드
0
인용
0
참고문헌
초록
PURPOSE. A new light curing urethane dimethacrylate and a cold curing resin with simpler and faster laboratory procedures may have even improved flexural properties. This study investigated the 3-point flexural strengths and flexural moduli of two alternate base materials. MATERIALS AND METHODS. A cold curing resin (Weropress) and a light curing urethane dimethacrylate base material (Eclipse). Along with Eclipse and Weropress, a high impact resin (Lucitone199) and three conventional base materials (QC 20, Meliodent and Paladent 20) were tested. A 3-point bending test was used to determine the flexural strengths and flexural moduli. The mean displacement, maximum load, flexural modulus and flexural strength values and standard deviations for each group were analyzed by means of one-way analysis of variance (ANOVA) (with mean difference significant at the 0.05 level). Post hoc analyses (Scheffe test) were carried out to determine the differences between the groups at a confidence level of 95%. RESULTS. Flexural strength, displacement and force maximum load values of Eclipse were significantly different from other base materials. Displacement values of QC 20 were significantly different from Lucitone 199 and Weropress. CONCLUSION. The flexural properties and simpler processing technique of Eclipse system presents an advantageous alternative to conventional base resins and Weropress offers another simple laboratory technique.
Abstract
PURPOSE. A new light curing urethane dimethacrylate and a cold curing resin with simpler and faster laboratory procedures may have even improved flexural properties. This study investigated the 3-point flexural strengths and flexural moduli of two alternate base materials. MATERIALS AND METHODS. A cold curing resin (Weropress) and a light curing urethane dimethacrylate base material (Eclipse). Along with Eclipse and Weropress, a high impact resin (Lucitone199) and three conventional base materials (QC 20, Meliodent and Paladent 20) were tested. A 3-point bending test was used to determine the flexural strengths and flexural moduli. The mean displacement, maximum load, flexural modulus and flexural strength values and standard deviations for each group were analyzed by means of one-way analysis of variance (ANOVA) (with mean difference significant at the 0.05 level). Post hoc analyses (Scheffe test) were carried out to determine the differences between the groups at a confidence level of 95%. RESULTS. Flexural strength, displacement and force maximum load values of Eclipse were significantly different from other base materials. Displacement values of QC 20 were significantly different from Lucitone 199 and Weropress. CONCLUSION. The flexural properties and simpler processing technique of Eclipse system presents an advantageous alternative to conventional base resins and Weropress offers another simple laboratory technique.
참고문헌 (20)
- Phoenix RD, "Denture base materials", Dent Clin North Am, 40, pp.113~120 (1996)
- Darbar UR, "Denture fracture-a survey", Br Dent J, 176, pp.342~345 (1994)
- Beyli MS, "An analysis of causes of fracture of acrylic resin dentures", J Prosthet Dent, 46, pp.238~241 (1981)
- Rodford RA, "Further observations on high impact strength denture-base materials", Biomaterials, 13, pp.726~728 (1992)
- Jagger DC, "An investigation into the transverse and impact strength of "high strength" denture base acrylic resins", J Oral Rehabil, 29, pp.263~267 (2002)
- Khan Z, "The staining characteristics, transverse strength, and microhardness of a visible light-cured denture base material", J Prosthet Dent, 57, pp.384~386 (1987)
- Pfeiffer P, "Residual methyl methacrylate monomer, water sorption, and water solubility of hypoallergenic denture base materials", J Prosthet Dent, 92, pp.72~78 (2004)
- Pfeiffer P, "Flexural strength and moduli of hypoallergenic denture base materials", J Prosthet Dent, 93, pp.372~377 (2005)
- Jagger DC, "The effect of the addition of poly (methyl methacrylate) fibres on the transverse strength of repaired heat-cured acrylic resin", J Oral Rehabil, 30, pp.903~908 (2003)
- Ali IL, "Hardness, flexural strength, and flexural modulus comparisons of three differently cured denture base systems", J Prosthodont, 17, pp.545~549 (2008)
- Memon MS, "Some mechanical properties of a highly cross-linked, microwave-polymerized, injection-molded denture base polymer", Int J Prosthodont, 14, pp.214~218 (2001)
- Vallittu PK, "The effect of void space and polymerization time on transverse strength of acrylic-glass fibre composite", J Oral Rehabil, 22, pp.257~261 (1995)
- Ogle RE, "A new visible light-cured resin system applied to removable prosthodontics", J Prosthet Dent, 56, pp.497~506 (1986)
- Fellman S, "Visible light-cured denture base resin used in making dentures with conventional teeth", J Prosthet Dent, 62, pp.356~359 (1989)
- Khan Z, "One-appointment construction of an immediate transitional complete denture using visible light-cured resin", J Prosthet Dent, 68, pp.500~502 (1992)
- Johnston EP, "Flexure fatigue of 10 commonly used denture base resins", J Prosthet Dent, 46, pp.478~483 (1981)
- Dixon DL, "The transverse strengths of three denture base resins reinforced with polyethylene fibers", J Prosthet Dent, 67, pp.417~419 (1992)
- Machado C, "Comparative study of the transverse strength of three denture base materials", J Dent, 35, pp.930~933 (2007)
- Uzun G, "Comparison of the fracture resistance of six denture base acrylic resins", J Biomater Appl, 17, pp.19~29 (2002)
- Diaz-Arnold AM, "Flexural and fatigue strengths of denture base resin", J Prosthet Dent, 100, pp.47~51 (2008)