A study on the properties of denture base materials made from PMMA filled with Al2O 3/ZrO2 was carried out. The amount of Al2O 3/ZrO2 filler was fixed at 5 wt%. However, the ratio of Al 2O3 to ZrO2 added was from 0 to 100. Samples were prepared for fracture toughness, flexural, and tensile tests. The fracture surface was analyzed using SEM and EDS. It was found that the Al2O 3/ZrO2 of 80 : 20 ratio shows the highest values of fracture toughness and flexural properties. SEM micrographs indicate that distribution of Al2O3 and ZrO2 in the PMMA matrix is fairly homogeneous. The interface between the reinforcement particles and matrix is good. Therefore, addition of Al2O3/ZrO2 in PMMA improves the mechanical properties of this denture base material.
Tham WL, Chow WS and Ishak ZAM.Flexural and morphological properties of poly(methyl methacrylate)/ hydroxyapatite composite effect of planetary ball mill grinding time. J Reinf Plast Compos2010; 29(13): 2065-2075.
2.
Hussain S.Textbook of dental materials. New Delhi: Jaypee Brothers Medical Publishers (P) Ltd, 2004.
3.
Meng TR and Latta MAPhysical properties of four acrylic denture base resins. J Contemp Dent Pract2005; 6(4): 1-5.
4.
Uzun G. and Hersek N.Comparison of the fracture resistance of six denture base acrylic resins. J Biomater Appl2002; 17(1): 19-29.
5.
Vojdani M. and Khaledi AAR.Transverse strength of reinforced denture base resin with metal wire and E-glass fibers. J Dent2006; 3(4): 167-172.
6.
Khindria SK, Mittal S. and Sukhija U.Evolution of denture base materials. J Indian Prosthodont Soc2009; 9(2): 64-69.
7.
Carlos NB and Harrison A.The effect of untreated UHMWPE beads on some properties of acrylic resin denture base material. J Dent1997; 25(1): 59-64.
8.
Vuorinen AM, Dyer SR, Lassila LVJ and Vallittu PKEffect of rigid rod polymer filler on mechanical properties of poly methyl methacrylate denture base material. Dent Mater2008; 24(5): 708-713.
9.
Elshereksi NW , Mohamed SH, Arifin A. and Ishak ZAM.Effect of incorporation on the fracture toughness properties of denture base poly(methyl methacrylate). J Phys Sci2009; 20(2): 1-12.
10.
Chow WS, Tay HK, Azlan A. and Ishak ZAM.Mechanical and thermal properties of hydroxyaptite filled poly(methyl methacrylate) composites. In: Proceedings of the Polymer Processing Society 24th Annual Meeting, Salerno , Italy.
11.
Chow WS, Khim LYA, Azlan A. and Ishak ZAM.Flexural properties of hydroxyapatite reinforced poly(methyl methacrylate) composite. J Reinf Plast Compos2008; 27(9): 945-952.
12.
Ayad NM, Badawi MF and Fatah AAEffect of reinforcement of high-impact acrylic resin with zirconia on some physical and mechanical properties. Rev de Clin Pesq Odontol. set/dez. 2008; 4(3): 145-151.
13.
Ellakwa AE, Morsy MA and El-Sheikh AMEffect of aluminum oxide addition on the flexural strength and thermal diffusivity of heat-polymerized acrylic resin. J Prosthodont2008; 17(6): 439-444.
14.
Mangalarja RV, Chandrasekhar BK and Manohar P.Effect of ceria on the physical, mechanical and thermal properties of yttria stabilized zirconia toughened alumina. Mater Sci Eng A2003; 343: 71-75.
15.
Liang X., Qiu Y., Zhou S., Hu X., Yu G. and Deng X.Preparation and properties of dental zirconia ceramic. J Univ Sci Technol2008; 15(6): 764-768.
16.
Gain AK, Song H. and Lee B.Microstructure and mechanical properties of porous yttria stabilized zirconia ceramic using poly methyl methacrylate powder. Scr Mater2006; 54: 2081-2085.
17.
Fortulan CA and de Souza DPF.Microstructural evolution of the Al2O3-ZrO2 composite and its correlation with electrical conductivity . Mater Res1999; 2(3): 205-210.
18.
Marti A.Inert bioceramics (Al2O3, ZrO2) for medical application. Injury Int J Care Injured2000; 31(S-D): 33-36.
19.
Santos C., Souza RC, Daguano Jkmf, Elias CN and Rogero SODevelopment of Al2O3-ZrO2 bioceramic composites. In: 51 Congresso Brasileiro de Cerâmica, Salvador, BA .
20.
Manicone PF , Iommetti PR and Raffaelli L.An overview of zirconia ceramic: basic properties and clinical application. J Dent2007; 35: 819-826.
21.
Xu HHK , Martin TA, Antonucci JM and Eichmiller FCCeramic whisker reinforcement of dental resin composites. J Dent Res1999; 78(2): 706-707.
22.
Polat TN, Karacaer ö, Tezvergil A., Lassila Lvja and Vallittu PKWater sorption, solubility and dimensional changes of denture base polymers reinforced with short glass fibers. J Biomater Appl2003; 17: 321-335.
