10.24423/engtrans.3449.2025
Investigating the Mechanical, Physical and Biological Properties of PMMA/TiO2 Composites with Nanoclay for Denture Applications
Anwer J. AL-OBAIDI
0000-0003-2661-2569
University of Wasit
Iraq
Prosthodontics uses permanent or removable dentures to replace missing teeth, with partial dentures made from cobalt chromium and full dentures from acrylic resin. This study presents Veracril self-curing acrylic, a material for hybrid artificial denture composites reinforced with montmorillonite (MMT) and titanium oxide (TiO2) particles. It is softer, lighter, and more stable than previous materials. Several experiments (mechanical, physical, and biological) have been carried out to examine the novel composite at various MMT and TiO2 weight ratios. The findings indicate that these additives significantly improve the mechanical properties of the matrix material, making it suitable for denture manufacturing. The addition of MMT as a filler enhances bonding between the matrix and additives. The additives' success in biological tests, including antibacterial activity and toxicity assessments, further supports their suitability for dental applications.
Copyright © The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0).
References
Anusavice K.J., Shen C., Rawls H.R. [Eds.], Phillips' Science of Dental Materials, 12th edition, Elsevier Health Sciences, 2012.
Al-Obaidi A.J., Tariq A., Dalfi H., Influence of nanoparticles reinforcements on the mechanical performance and tribological properties of aluminum 6082 alloys, Engineering Transactions, 70(4): 391–405, 2022, https://doi.org/10.24423/EngTrans.2239.20221012.
Ayaz E.A., Durkan R., Koroglu A., Bagis B., Comparative effect of different polymerization techniques on residual monomer and hardness properties of PMMA-based denture resins, Journal of Applied Biomaterials and Functional Materials, 12(3): 228–233, 2014, https://doi.org/10.5301/jabfm.5000199.
Mustafa M., Evaluation of Candida albicans attachment to flexible denture base materials (valplast) and heat cure acrylic resin using different finishing and polishing techniques, M.Sc. Thesis, University of Baghdad, College of Dentistry, Iraq, 2011.
Meng T.R., Latta M., Physical properties of four acrylic denture base resins, The Journal of Contemporary Dental Practice, 6(4): 93–100, 2005.
Al-Karagholi M., Application of microwave energy in polymerization of reinforced radio-opaque denture base materials, M.Sc. Thesis, University of Baghdad, College of Dentistry, Iraq, 1992.
Vallittu P.K., Lassila V.P., Lappalainen R., Acrylic resin-fiber composite – Part I: The effect of fiber concentration on fracture resistance, The Journal of Prosthetic Dentistry, 71(6): 607–612, 1994, https://doi.org/10.1016/0022-3913(94)90446-4.
Hamid N., Two dimensional FE stress analysis of upper complete denture, M.Sc. Thesis, University of Baghdad, College of Dentistry, Iraq, 2000.
Barão V.A.R., Assunção W.G., Tabata L.F., Delben J.A., Gomes E.A., de Sousa E.A.C., Rocha E.P., Finite element analysis to compare complete denture and implant-retained overdentures with different attachment systems, Journal of Craniofacial Surgery, 20(4): 1066–1071, 2009, https://doi.org/10.1097/SCS.0b013e3181abb395.
Alamgir M., Mallick A., Nayak G.C., Tiwari S.K., Development of PMMA/TiO2 nanocomposites as excellent dental materials, Journal of Mechanical Science and Technology, 33(10): 4755–4760, 2019, https://doi.org/10.1007/s12206-019-0916-7.
American National Standards Institute/American Dental Association Specification No. 12 – 2002: Denture Base Polymers, Council on Scientific Affairs, American Dental Association, Chicago, 1999.
ASTM International, ASTM D695-02: Standard Test Method for Compressive Properties of Rigid Plastics, West Conshohocken, PA, 2002.
ASTM International, Standard test method for rubber property—durometer hardness, ASTM D2240-03, [in:] Annual Book of ASTM Standards, Volume 09.01, West Conshohocken, PA, 2003.
Abdulridha N.J., Al-Ghaban A.M., Al-Obaidi A.J., Physical and structural properties of biphasic calcium phosphate BCP reinforced with silicene fillers, AIP Conference Proceedings, 3091(1): 030003, 2024, https://doi.org/10.1063/5.0204640.
Abdulridha N.J., Al-Ghaban A., Al-Obaidi A.J., Improvement of the mechanical properties of biphasic calcium phosphate ceramic composite using silicene, Engineering Transactions, 71(2): 185–195, 2023, https://doi.org/10.24423/EngTrans.3070.20230328.
Choudhary O.P., Kalita P.C., Doley P.J., Kalita A., Scanning electron microscope-advantages and disadvantages in imaging components, Life Science Leaflets Journal, 85: 1–7, 2017.
ASTM, Standard Test Method for Water Absorption of Plastics, American Society for Testing and Materials, 1995.
Salih I.S., Oleiwi J.K., Hamad Q.A., Investigation of fatigue and compression strength for the PMMA reinforced by different system for denture applications, International Journal of Biomedical Materials Research, 3(1): 5–13, 2015, https://doi.org/10.11648/j.ijbmr.20150301.13.
Callister W. D., Rethwisch D.G., Materials Science and Engineering: An Introduction, John Wiley & Sons, 2020.
Harini P., Kasim M., Padmanabhan T.V., Effect of titanium dioxide nanoparticles on the flexural strength of polymethylmethacrylate: An in vitro study, Indian Journal of Dental Research, 25(4): 459–463, 2014, https://doi.org/10.4103/0970-9290.142531.
Al-Obaidi A.J., Majewski C., Ultrasonic welding of polymer–metal hybrid joints, [in:] Transactions on Intelligent Welding Manufacturing (TRINWM), Chen S., Zhang Y., Feng Z. (eds), Vol. 2, No.2, pp. 21–38, Springer, Singapore, 2019, https://doi.org/10.1007/978-981-13-3651-5_2.
Abbas A.T., Al-Obaidi A.J., Ahmed S.J., Synthesis and study of the mechanical properties of biodegradable polyvinyl alcohol/eggshell composites, Journal of Engineering Science and Technology, 16(4): 3084–3093, 2021.
Gad M.M., Abualsaud R., Behavior of PMMA denture base materials containing titanium dioxide nanoparticles: A literature review, International Journal of Biomaterials, 2019: 6190610, 2019, https://doi.org/10.1155/2019/6190610.
DOI: 10.24423/engtrans.3449.2025