COMPARISON OF THE MECHANICAL PROPERTIES OF DENTAL COMPOSITE AND ITS MODIFIED COUNTERPART WITH HYDROXYAPATITE
DOI:
https://doi.org/10.33279/jkcd.v15i04.904Keywords:
Dental composite, organic part, matrix, polymerization, resin componentAbstract
Objectives: This study compared mechanical properties of pure dental composite made with that of copper dope hydroxyapatite integrated in dental resin composite.
Materials and Methods: Dental resin composite with 2%, 5% and 8% Nano hydroxyapatite crystals doped in Copper was mechanically tested in comparison to dental resin composite manufactured manually having 70% Bis-GMA and 30% TEGDMA, Camphor quinine as a initiator and dimethyl aminoethyl methacrylate in a form of co-initiator. Flexural strength, Vickers hardness and values of compressive strength were evaluated.
Results: The mechanical tests revealed that as compared to dental composite manufactured in laboratory, the hydroxyapatite doped with copper dental composite had signifi cantly better mechanical properties.
Conclusion: The Vickers’s hardness, flexural strength and compressive strength of experimental dental composite increased with increasing percentage of hydroxyapatite nanoparticles added as a fi ller in a proportion of 3%, 5% and 8% with salinized silica in dental composite.
References
Schweikl H, Schmalz G, Weinmann W. Mutagenic activity of structurally related oxiranes and siloranes in Salmonella typhimurium. Mutation Research/Genetic Toxicology and Environmental Mutagenesis. 2002;521(1):19-27.
Ferracane JL. Current trends in dental composites. Crit Rev Oral Biol Med. 1995;6(4):302-18.
Islam MS, Nassar M, Elsayed MA, Jameel DB, Ahmad TT, Rahman MM. In Vitro Optical and Physical Stability of Resin Composite Materials with Diff erent Filler Characteristics. Polymers. 2023;15(9).
Ikejima I, Nomoto R, McCabe JF. Shear punch strength and flexural strength of model composites with varying
filler volume fraction, particle size and silanation. Dental Materials. 2003;19(3):206-11.
Fortin D, Vargas MA. The spectrum of composites: new techniques and materials. J Am Dent Assoc. 2000;131 Suppl:26s-30s.
Mahajan V, Bhondwe S, Doot R, Balpande R, Bhandari S, Dahiwale S. failures in composite restoration. International Journal of Dental Research. 2015;3:10.
Spencer P, Ye Q, Misra A, Goncalves SE, Laurence JS. Proteins, pathogens, and failure at the composite-tooth
interface. J Dent Res. 2014;93(12):1243-9.
Abbasi M, Moradi Z, Mirzaei M, Kharazifard MJ, Rezaei S. Polymerization Shrinkage of Five Bulk-Fill Composite Resins in Comparison with a Conventional Composite Resin. Journal of dentistry (Tehran, Iran). 2018;15(6):365-74.
Aminoroaya A, Neisiany RE, Khorasani SN, Panahi P, Das O, Madry H, et al. A review of dental composites: Challenges, chemistry aspects, filler influences, and future insights. Composites Part B: Engineering. 2021;216:108852.
Ilie N, Hickel R. Silorane-based Dental Composite: Behavior and Abilities. Dental materials journal. 2006;25:445-54.
Rueggeberg FA. From vulcanite to vinyl, a history of resins in restorative dentistry. The Journal of prosthetic dentistry. 2002;87(4):364-79.
Eick JD, Robinson SJ, Byerley TJ, Chappelow CC. Adhesives and nonshrinking dental resins of the future. Quintessence international (Berlin, Germany : 1985). 1993;24(9):632-40.
Aydınoğlu A, Yoruç ABH. Eff ects of silane-modified fillers on properties of dental composite resin. Materials Science and Engineering: C. 2017;79:382-9.
Alsharif SO, Bin Md Akil H, Abbas Abd El-Aziz N, Arif in Bin Ahmad Z. Eff ect of alumina particles loading on the mechanical properties of light-cured dental resin composites. Materials & Design (1980-2015). 2014;54:430-5.
Chen L, Yu Q, Wang Y, Li H. BisGMA/TEGDMA dental composite containing high aspect-ratio hydroxyapatite nanofibers. Dent Mater. 2011;27(11):1187-95.
Melo MA, Guedes SF, Xu HH, Rodrigues LK. Nanotechnology-based restorative materials for dental caries management. Trends in biotechnology. 2013;31(8):459 67.
Liuyun J, Chengdong X, Dongliang C, Lixin J, xiubing P. Effect of n-HA with different surface-modified on the properties of n-HA/PLGA composite. Applied Surface Science. 2012;259:72-8.
Zakir M, Kheraif A, Asif M, Wong F, Rehman I. A comparison of the mechanical properties of a modified silorane based dental composite with those of commercially available composite material. Dental materials : official publication of the Academy of Dental Materials. 2013;29.
Dalavai P, Nasreen F, Srinivasan R, Pramod J, Bhandary S, Penmatsa C. To evaluate and compare the compressive strength of root dentin exposed to calcium hydroxide, mixed with various vehicles for a period of 30 days - An in vitro study. Journal of conservative dentistry : JCD. 2021;24(6):563-7.
García-Vásquez A, Pinacho-Pinacho C, Guzmán-Valdivieso I, Calixto M, Rubio-Godoy M. Morpho-molecular characterization of Gyrodactylus parasites of farmed tilapia and their spillover to native fishes in Mexico. Scientifi c Reports. 2021;11.
Pratap B, Gupta R, Bhardwaj B, Nag M. Evaluation of compressive strength and void content of resin based dental composites. Materials Today: Proceedings. 2020;33.
Kumar S, Patnaik A, Bhat I. Physical and thermo-mechanical characterizations of resin-based dental compos
ite reinforced with Silane-Modifi ed nanoalumina filler particle. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 2015;230.
Pratap B, Nag M, Yadav R, Althahban S, Wal J. Dynamic mechanical analysis of zinc oxide and hydroxyapatite
particulate filled dental restorative composite materials2023. 020212 p.
Elfakhri F, Alkahtani R, Li C, Khaliq J. Influence of filler characteristics on the performance of dental composites: A comprehensive review. Ceramics International. 2022;48.
Babina K, Polyakova M, Sokhova I, Doroshina V, Arakelyan M, Novozhilova N. The Eff ect of Finishing and Polishing Sequences on The Surface Roughness of Three Different Nanocomposites and Composite/Enamel and Composite/ Cementum Interfaces. Nanomaterials. 2020;10:1339.
Chinelatti MA, Chimello DT, Ramos RP, Palma-Dibb RG. Evaluation of the surface hardness of composite resins before and after polishing at different times. Journal of applied oral science : revista FOB. 2006;14(3):188 92.
Levartovsky S, Kuyinu E, Georgescu M, Goldstein GR. A comparison of the diametral tensile strength, the flexural strength, and the compressive strength of two new core materials to a silver alloy-reinforced glass-ionomer material. The Journal of prosthetic dentistry. 1994;72(5):481-5.
Kim K-H, Ong J, Okuno O. The effect of filler loading and morphlogy on the mechanical properties of contem
porary composites. The Journal of prosthetic dentistry. 2002;87:642-9.
Alansy AS, Saeed TA, Al-Attab R, Guo Y, Yang Y, Liu B, et al. Boron nitride nanosheets modifi ed with zinc oxide
nanoparticles as novel fi llers of dental resin composite. Dent Mater. 2022;38(10):e266-e74.
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Copyright (c) 2025 Wajiha Ahmad, Aiman Khan, Haseeb Ahmad, Farrukh Ahmad, Sahibzada Ammar Ahmad, Bilal Zaman Babar

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