International Journal of Prosthodontics and Restorative Dentistry

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VOLUME 11 , ISSUE 1 ( January-March, 2021 ) > List of Articles


Water Sorption of Polymethylmethacrylate and Polyamide Materials: A Comparative Study

Hamza Ulu, Nuran Yanikoglu, Nurdan Sagsoz, Alper Ozdogan

Keywords : Denture base material, PA, PMMA, Water sorption

Citation Information : Ulu H, Yanikoglu N, Sagsoz N, Ozdogan A. Water Sorption of Polymethylmethacrylate and Polyamide Materials: A Comparative Study. Int J Prosthodont Restor Dent 2021; 11 (1):22-26.

DOI: 10.5005/jp-journals-10019-1305

License: CC BY-NC 4.0

Published Online: 12-08-2021

Copyright Statement:  Copyright © 2021; The Author(s).


Aim and objective: Structural disorders due to an allergic reaction and water absorption of denture base materials have created a negative effect on the patients. This study aimed to evaluate the water sorption values of different base denture base materials [polymethylmethacrylate (PMMA) and polyamide (PA)] which were kept at different immersion times. Materials and methods: Eighty-eight specimens shaped as a disk with dimensions of (50 mm in length × 0.5 mm in thickness) were used in this study. PMMA and PA denture base materials were prepared according to the manufacturer's instructions. The control group was measured and recorded before immersing in solutions, the readings (m0) of each specimen were measured using an electronic balance, and data were recorded. Then, the specimens were immersed for 1, 7, 30, and 45 days (d). The water sorption values of each specimen were measured before and after desiccation. Kolmogorov–Smirnov test and Mann–Whitney U test were used for analyzing data. Results: The PMMA specimens showed the highest sorption values in distilled water at 30 days (0.30 ± 0.03 mg/mm2), while PA specimens showed the highest sorption values in the tea solution for 30 days (0.51 ± 0.06 mg/mm2). PA and PMMA denture base materials showed statistically significant values (p < 0.05) after 30 days of immersion in water. Conclusion: The sorption values of the PA materials were higher than those of the PMMA materials.

  1. Anusavice KJ, Shen C, Rawls HR. Philips' science of dental materials. 12th ed. St. Louis: Elsevier; 2013. pp. 108–110.
  2. Chai XS, Hou QX, Schork FJ. Determination of residual monomer in polymer latex by full evaporation headspace gas chromatography. J Chromatogr A 2004;1040(2):163–167. DOI: 10.1016/j.chroma.2004.04.024.
  3. Yunus N, Rashid AA, Azmi LL, et al. Some flexural properties of a nylon denture base polymer. J Oral Rehabil 2005;32(1):65–71. DOI: 10.1111/j.1365-2842.2004.01370.x.
  4. Parvizi A, Lindquist T, Schneider R, et al. Comparison of the dimensional accuracy of injection-molded denture base materials to that of conventional pressure-pack acrylic resin. J Prosthodont 2004;13(2):83–89. DOI: 10.1111/j.1532-849X.2004.04014.x.
  5. Wall DM. Clinical assessment of nylon as a denture base material. Br Dent J 1995;95:238–241.
  6. Hargreaves AS. Nylon as a denture-base material. Dent Pract Dent Rec 1971;22(4):122–128.
  7. Stafford GD, Handley RW. Transverse bend testing of denture base polymers. J Dent 1975;3(6):251–255. DOI: 10.1016/0300-5712(75)90030-5.
  8. Takahashi H, Kawada E, Tamaki Y, et al. Basic properties of thermoplastic resins of denture base material referred to “non clasp denture”. J Dent Mater 2009;28:161–167.
  9. Barsby MJ, Braden M. A hydrophilic denture base resin. J Dent Res 1979;58(6):1581–1584. DOI: 10.1177/00220345790580060701.
  10. Barsby MJ. A denture base resin with low water absorption. J Dent 1992;20(4):240–244. DOI: 10.1016/0300-5712(92)90094-s.
  11. Sd-dbp International Organization for Standardization, second ed., International Standards Organization, Geneva, 1988.
  12. Arikan A, Ozkan YK, Arda T, et al. Effect of 180 days of water storage on the transverse strength of acetal resin denture base material. J Prosthodont 2010;19(1):47–51. DOI: 10.1111/j.1532-849X.2009.00495.x.
  13. Kalachandra S, Turner DT. Water sorption of polymethacrylate networks: bis-GMA/TEGDM copolymers. J Biomed Mater Res 1987;21(3):329–338. DOI: 10.1002/jbm.820210306.
  14. Pfeiffer P, Rosenbauer EU. Residual methyl methacrylate monomer, water sorption, and water solubility of hypoallergenic denture base materials. J Prosthet Dent 2004;92(1):72–78. DOI: 10.1016/j.prosdent.2004.04.003.
  15. Polat Sagsoz N, Yanıkoglu N, Ulu H, et al. Color changes of polyamid and polymetyhl methacrylate denture base materials. Open J Stomatol 2014;4(10):489–496. DOI: 10.4236/ojst.2014.410066.
  16. Vallittu PK. Effect of 180-week water storage on the flexural properties of E-glass and silica fiber acrylic resin composite. Int J Prosthodont 2000;13(4):334–339.
  17. Ohno H, Endo K, Araki Y, et al. Destruction of metal resin adhesion due to water penetrating through the resin. J Mater Sci 1992;27(19):5149–5153. DOI: 10.1007/BF02403808.
  18. O'Brien WJ, Ryge G. An outline of dental materials. Philadelphia: Saunders; 1978. pp. 221–222.
  19. Polat TN, Karacaer O, Tezvergil A, et al. Water sorption, solubility and dimensional changes of denture base polymers reinforced with short glass fibers. J Biomater Appl 2003;17(4):321–335. DOI: 10.1177/0885328203017004006.
  20. Cucci AL, Vergani CE, Giampaolo ET, et al. Water sorption, solubility, and bond strength of two autopolymerizing acrylic resins and one heat-polymerizing acrylic resin. J Prosthet Dent 1998;80(4):434–438. DOI: 10.1016/s0022-3913(98)70008-3.
  21. Takabayashi Y. Characteristics of denture thermoplastic resins for non-metal clasp dentures. Dent Mater J 2010;29(4):353–361. DOI: 10.4012/dmj.2009-114.
  22. Dixon DL, Breeding LC, Ekstrand KG. Linear dimensional variability of three denture base resins after processing and in water storage. J Prosthet Dent 1992;68(1):196–200. DOI: 10.1016/0022-3913(92)90304-s.
  23. Cucci AL, Giampaolo ET, Leonardi P, et al. Unrestricted linear dimensional changes of two hard chairside reline resins and one heat-curing acrylic resin. J Prosthet Dent 1996;76(4):414–417. DOI: 10.1016/s0022-3913(96)90547-8.
  24. Yanikoglu N, Duymus ZY, Yilmaz B. Effects of different solutions on the surface hardness of composite resin materials. Dent Mater J 2009;28(3):344–351. DOI: 10.4012/dmj.28.344.
  25. Gilbert AS, Pethrik RA, Phillips RW. Acoustic relaxation and infrared spectroscopic measurements of plasticization of poly(methyl methacrylate) by water. J Appl Polymer Sci 1977;21(2):319–330. DOI: 10.1002/app.1977.070210202.
  26. Nguyen LG, Kopperud HM, Øilo M. Water sorption and solubility of polyamide denture base materials. Acta Biomater Odontol Scand 2017;3(1):47–52. DOI: 10.1080/23337931.2017.1326009.
  27. Zidan S, Silikas N, Haider J, et al. Long-term sorption and solubility of zirconia-impregnated pmma nanocomposite in water and artificial saliva. Materials 2020;13(17):3732. DOI: 10.3390/ma13173732.
  28. Chuchulska B, Yankov S, Todorov, R. Injection shrinkage and water sorption of some thermoplastic dental materials. Pesquısa Brasıleıra Em Odontopedıatrıa E Clınıca Integrada 2019;19(1):e4474.
  29. Elkholy S. Comparison of water conditioning effects on hardness and dimensional stability of methyl methacrylate and polyamide denture base materials. Int J Prosthodont Restorat Dentis 2018;8(4):114–119. DOI: 10.5005/jp-journals-10019-1218.
  30. Song SY, Kim KS, LeeJY, et al. Physical properties and color stability of injection-molded thermoplastic denture base resins. J Adv Prosthodont 2019;11(1):32–40. DOI: 10.4047/jap.2019.11.1.32.
  31. Meijer GJ, Wolgen PJ. Provisional flexible denture to assist in undisturbed healing of the reconstructed maxilla. J Prosthet Dent 2007;98(4):327–328. DOI: 10.1016/S0022-3913(07)60106-1.
  32. Kaplan P. Flexible removable partial dentures: design and clasp concepts. Dent Today 2008;27(120):122–123.
  33. Colán GP, Freitas FF, Ferreira PM, et al. Influence of different cantilever extensions and glass or polyaramide reinforcement fibers on fracture strength of implant-supported temporary. J Appl Oral Sci 2008;16(2):111–115. DOI: 10.1590/s1678-77572008000200006.
  34. Fu CC, Hsu YT. A comparison of retention characteristics in prefabricated and custom-cast dental attachments. J Prosthodont 2009;18(5):388–392. DOI: 10.1111/j.1532-849X.2009.00459.x.
  35. Zafar MS. Review prosthodontic applications of polymethyl methacrylate (PMMA): an update. Polymers 2020;12:1–35.
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