Authors: Zhala Dara Meran1 & Ranj Nadhim Salaie2 & Mina Khalid Ibrahim3 & Mariam Faris Elya4 & Wlat Hussein Khudhur5
1Hawler Medical University, College of Dentistry, Department of Prosthodontics, Erbil, Iraq
2Tishk International University, Faculty of Dentistry, Dentistry Department, Erbil, Iraq
3Hawler Medical University, College of Dentistry, Department of Prosthodontics, Erbil, Iraq
4Hawler Medical University, College of Dentistry, Department of Prosthodontics, Erbil, Iraq
5Hawler Medical University, College of Dentistry, Department of Prosthodontics, Erbil, Iraq
Abstract: Introduction: One of the most common problems of the soft denture liners is the deboning from the acrylic denture material. Thus, this study evaluates the effect of magnesium oxide nanoparticles (MgO NPs) on the soft liner deboning from the denture material.
Materials and methods: In this study, two tests were done (Tensile strength and Shear bond strength), for each test two groups were prepared first group (Control, n=5); second group (5 % of MgO NPs impregnated into the soft liner, n=5). Total 40 samples of hot cure acrylic were prepared in dimension of (8.1.2 cm length, width, depth respectively), for tensile bond strength, two acrylic samples where joined vertically with 3 mm thickness soft liner between the two pieces, while for the shear bond strength, two pices of acrylic were joined horizontally with the 3 mm thickness soft liner. The samples placed in distal water for 5 days, Universal testing machine used at crosshead speed of 5 mm/min.
Result: The data showed no statistical difference (Tensile bond strength and Shear bond strength) when 5 % of MgO NPs added into the soft liner. However, when tensile was compared with shear bond strength, higher resistance to tensile was observed compared to the shear strength.
Conclusion: Addition of MgO NPs did not affect the mechanical properties of soft denture liner, accordingly, MgO NPs can be used as antibacterial (as proved by previous studies) without compromising the mechanical properties.
Keywords: Dental Materials, Nanotechnology, Tensile Strength, Shear Strength, Acrylic Resin
Published: May 25, 2022
Ahmed, A.Q., & Ali, M.M.M., (2018). The influence of titanium dioxide nanoparticles incorporation into soft denture lining material on Candida albicans adherence and some mechanical and physical properties. Journal of PurE and aPPliEd Microbiology, 12(2), 783-791.
Ansarifard, E., Zareshahrabadi, Z., Sarafraz, N., & Zomorodian, K. (2021). Evaluation of antimicrobial and antibiofilm activities of copper oxide nanoparticles within soft denture liners against oral pathogens. Bioinorganic Chemistry and Applications, 15(3).
Chung, K.H., Chung, C.Y., Chung, C.Y., & Chan, D.C. (2008). Effect of pre- processing surface treatments of acrylic teeth on bonding to the denture base. J Oral Rehabil, 35, 268– 275.
Dohiem, M.M. (2022). Comparison of Bond strength between acrylic based soft liner and two different denture bases (3Dprinted and conventional denture base). Egyptian Dental Journal, 68(1), 659-663.
Ferreira, A.N., D’Souza, K., Aras, M., Chitre, V., Parsekar, S., & Pinto, M.J.W. (2022). Long term antifungal efficacy of silver-zinc zeolite nanoparticles incorporated in two soft dentures liners-An in vitro assessment. Dental Research Journal, 19.
Habibzadeh, S., Omidvaran, A., Eskandarion, S., & Shamshiri, A.R. (2020). Effect of incorporation of silver nanoparticles on the tensile bond strength of a long term soft denture liner. European Journal of Dentistry, 14(02), 268-273.
Khakbaz, S., Amirian Chaijan, K., Rezaei Dastjerdi, M., & Gholinia, H. (2019). Effect of sandblasting on the tensile bond strength of two permanent silicone soft liners to the denture base. Caspian Journal of Dental Research, 8(1), 43-50.
Meran, Z., & Salem, S.A.L. (2020). The effect of magnesium oxide nanoparticles impregnated into silicone facial prostheses against candida albicans and staphylococcus epidermidis. Crescent Journal of Medical and Biological Sciences, 6(4).
Najjar, M.S., Baraka, O., & Shoeib, A. (2021). Peel bond strength between a silicone-based soft liner and a heat-cured acrylic resin denture base reinforced with three concentrations of metal oxide nanoparticles. Egyptian Dental Journal, 67(1-January (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)), pp.747- 755.
Ravishankar Rai, V., & Jamuna Bai, A. (2011). Nanoparticles and their potential application as antimicrobials. A Méndez-Vilas A, editor. Mysore: Formatex.
Tang, Z.X., & Lv, B.F. (2014). MgO nanoparticles as antibacterial agent: preparation and activity. Brazilian Journal of Chemical Engineering, 31(3), 591-601.