Evaluation the Mechanical Properties of Nanofilled Composite Resin Restorative Material
- 1 Dental Biomaterials, Faculty of Dentistry, Mansoura and Umm Al Qura Universities, Egypt.
- 2 Dental Biomaterials, Faculty of Dentistry, Mansoura and Umm Al Qura Universities, Egypt.
Abstract
This study was designed to evaluate the wear resistance, fracture toughness and flexural strength of a nanofilled composite resin restorative material in comparison with a conventional hybrid composite resin. A total of 60 specimens were prepared from both types composite resins. Specimens were cured with a light curing device according to the manufacturer’s instructions. Wear resistance was evaluated through subjecting the specimens to wear testing at 0.1 bar wet pressure against carbide abrasive counter-body using wear testing machine under water as lubricant. The test conditions were; speed = 265 rpm, load = 0.1 bar, time = 5 min. Flexural strength and fracture toughness were tested using three-point bending test in universal testing machine at a cross head speed of 2 mm/min until failure occurred. The nanofilled composite resin material exhibited higher wear resistance than the hybrid composite resin material. On the other hand, there were no significant differences between the two materials in values of flexural strength and fracture toughness. It was concluded that the nanofilled composite resin was harder but it does not stronger than the conventional hybrid composite resin.
- J. Mahart and R. Hickel “Esthetic Compomer Restorations in Posterior Teeth Using a New All-in-One Adhesives,” Journal of Esthetic and Restorative Dentistry, Vol. 11, No. 5, 1999, pp. 250-258. doi:10.1111/j.1708-8240.1999.tb00406.x
- J. F. Roulet, “The Problems Associated with Substituting Composite Resins for Amalgam: A Status Report on Posterior Composites,” Journal of Dentistry, Vol. 6, No. 3, 1988, pp. 101-103. doi:10.1016/0300-5712(88)90001-2
- W. B. Wayne, A. L. Mark, L. E. Robert and L. Paul, “Comparison of Laboratory and Clinical Wear Rates of Resin Composites,” Quintessence International, Vol. 35, No. 4, 2004, pp. 269-274.
- S. C. Bayne, H. O. Heymann and E. J. Swift, “Update on Dental Composite Restoration,” Journal of the American Dental Association, Vol. 125, No. 6, 1994, pp. 687-701.
- N. Attar, “Effect of Finishing and Polishing Procedures on the Surface Roughness of Composite Resin Materials,” Journal of Contemporary Dental Practice, Vol. 8, No. 1, 2007, pp. 27-35.
- J. Mahart, H. Y. Chen and R. Hickel, “The Suitability of Packable Resin-Based Composites for Posterior Restorations,” Journal of the American Dental Association, Vol. 132, No. 5, 2001, pp. 639-645.
- N. Attar and M. D. Turgut, “Fluoride Release and Uptake Capacities of Fluoride Releasing Restorative Materials,” Operative Dentistry, Vol. 28, No. 4, 2003, pp. 395-402.
- K. F. Leinfelder, “Posterior Composite Resins: The Materials and Their Clinical Performance,” Journal of the American Dental Association, Vol. 126, No. 5, 1995, pp. 663-672.
- 3M Dental Products FiltekTM Supreme Universal Restorative System, Technical Product Profile St. Paul MN 55144-1000, 2002.
- D. B. Esteban, Y. Mahrkh and A. C. Angelo, “Fracture Toughness of Nine Flowable Resin Composites,” Journal of Prosthetic Dentistry, Vol. 89, No. 3, 2003, pp. 261-267. doi:10.1067/mpr.2003.33
- N. Attar, L. E. Tam and D. McComb, “Flow, Strength, Stiffness and Radiopacity of Flowable Resin Composites,” Journal of the Canadian Dental Association, Vol. 69, No. 8, 2003, pp. 516-521.
- S. Suzuki, K. F. Leinfelder, K. Kawai and Y. Tsuchitani, “Effect of Particle Variation on Wear Rates of Posterior Composites,” American Journal of Dentistry, Vol. 8, No. 4, 1995, pp. 173-178.
- J. R. Condonand and J. L. Ferracane, “In Vitro Wear of Composite with Varied Cure, Filler Level, and Filler Treatment,” Journal of Dental Research, Vol. 76, No. 7, 1997, pp. 1405-1411. doi:10.1177/00220345970760071101