Effect of Poly-urethane Oligomer on Properties of Light-cured Dental Resin

doi:10.13701/j.cnki.kqyxyj.2023.11.012

Abstract

Abstract: Objective: To improve the comprehensive performance of dental resin matrix through a new polyurethane-dimethacrylate oligomer (PU-MA). Methods: BPA, IPDI, and HEMA were used to synthesize the PU-MA, and the new dental resin matrix was prepared by combining the PU-MA with Bis-GMA/TEGDMA resin matrix reinforced by 5 wt% POSS-MA. The mechanical-physical properties and in vitro cytotoxicity were tested. Results: The flexible strength of PU-MA-20 was up to (124.51±6.00) MPa, which was higher than the minimum standard of ISO 4049(≥90 MPa); the water absorption and solubility were (25.93±1.47) μg/mm³ and (0.50±0.08) μg/mm³, which were lower than the maximum standard of ISO 4049(water absorption≤40 μg/mm³, water solubility≤7.5 μg/mm³). The relative growth rate of PU-MA-20 was more than 90% and the L929 cell morphology performs well. Conclusion: For methacrylate based resin, PU-MA is conducive to improve the mechanical strength of traditional dental resin and decrease its water sorption and solubility, which indicates that it may have a good application potential in improving the aging resistance of composite resin.

Key words: resin matrix, poly-urethane, water sorption and solution, mechanical property

FENG Dan, YANG Zhengyuan, WEN Yaqing, LIN Qi. Effect of Poly-urethane Oligomer on Properties of Light-cured Dental Resin[J]. Journal of Oral Science Research, 2023, 39(11): 1000-1004.

References

[1] Borges CM, Krishnamurthy M. Are we getting any better? A critical analysis of selected healthy people 2020 oral health indicators in 1999-2004 and 2013-2016, USA[J]. Int J Environ Res Public Health, 2022, 19(9): 5250.
[2] Brunthaler A, König F, Lucas T, et al. Longevity of direct resin composite restorations in posterior teeth: a review[J]. Clin Oral Investig, 2003, 7(2): 63-70.
[3] Heintze SD, Rousson V. Clinical effectiveness of direct class Ⅱ restorations-a meta-analysis[J]. J Adhes Dent, 2012, 14(5): 407-431.
[4] Heintze SD, Ilie N, Hickel R, et al. Laboratory mechanical parameters of composite resins and their relation to fractures and wear in clinical trials-A systematic review[J]. Dent Mater, 2016, 33(3): e101-e114.
[5] Ligon-Auer SC, Schwentenwein M, Gorsche C, et al. Toughening of photo-curable polymer networks: A review[J]. Polym Chem, 2016, 7(2): 257-286.
[6] Szczesio-Wlodarczyk A, Sokolowski J, Kleczewska J, et al. Ageing of dental composites based on methacrylate resins-A critical review of the causes and method of assessment[J]. Polymers (Basel), 2020, 12(4): 882.
[7] Szczesio-Wlodarczyk A, Fronczek M, Ranoszek-Soliwoda K, et al. The first step in standardizing an artificial aging protocol for dental composites-evaluation of basic protocols[J]. Molecules, 2022, 27(11): 3511.
[8] Lichtenhan JD, Vu NQ, Carter JA, et.al. Silsesquioxane-siloxane copolymers from polyhedral Silsesquioxane[J]. Macromolecules, 1993, 26(8): 2141-2142.
[9] Wu X, Sun Y, Xie W, et. al. Development of novel dental nanocomposites reinforced with polyhedral oligomeric silsesquioxane (POSS)[J]. Dent Mater, 2010, 26(5): 456-462.
[10] Feng D, Guo X, Jiang X, et al. Properties of methacryl polyhedral oligomeric silsesquioxane (POSS-MA) doped methacrylate-based dental resins and composites containing glass flake/Ba-Al-SiO₂ glass powder as inorganic dental fillers[J]. Acta Medica Mediterranea, 2019, 35(1): 87-92.
[11] Chen CY, Huang XK, Lin SP, et al. Low-shrinkage visible-light-curable urethane-modified epoxy acrylate/SiO₂ composites as dental restorative materials[J]. Compos Sci Technol, 2008, 68(13): 2811-2817.
[12] Minch MJ. An introduction to hydrogen bonding[J]. J Chem Educ, 1999, 76(6):759.
[13] Sánchez G. Introduction to "intramolecular Hydrogen Bonding 2018"[J]. Molecules, 2019, 24(16): 2858.
[14] Ferracane JL. Hygroscopic and hydrolytic effects in dental polymer networks[J]. Dent Mater, 2006, 22(3): 211-222.
[15] Gonçalves F, Kawano Y, Pfeifer C, et al. Influence of BisGMA, TEGDMA, and BisEMA contents on viscosity, conversion, and flexural strength of experimental resins and composites[J]. Eur J Oral Sci, 2009, 117(4): 442-446.
[16] Barszczewska-Rybarek IM. Structure-property relationships in dimethacrylate networks based on Bis-GMA, UDMA and TEGDMA[J]. Dent Mater, 2009, 25(9): 1082-1089.
[17] Peutzfeldt A. Resin composites in dentistry: the monomer systems[J]. Eur J Oral Sci, 1997, 105(2): 97-116.
[18] Huang W, Ren L, Cheng Y, et al. Evaluation of the color stability, water sorption, and solubility of current resin composites[J]. Materials (Basel), 2022, 15(19):6710.
[19] Klauer E, Belli R, Petschelt A, et al. Mechanical and hydrolytic degradation of an Ormocer^®-based Bis-GMA-free resin composite[J]. Clin Oral Investig, 2019, 23(5):2113-2121.