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VOLUME 22 , ISSUE 2 ( February, 2021 ) > List of Articles

ORIGINAL RESEARCH

Comparison of Mechanical Properties of PEEK and PMMA: An In Vitro Study

Spardha P Shrivastava, Rajani Dable, AP Nirmal Raj, Puneet Mutneja, Sparsh B Srivastava, Merazul Haque

Keywords : Flexural strength, Heat-activated PMMA, PEEK, Vickers microhardness test

Citation Information : Shrivastava SP, Dable R, Nirmal Raj A, Mutneja P, Srivastava SB, Haque M. Comparison of Mechanical Properties of PEEK and PMMA: An In Vitro Study. J Contemp Dent Pract 2021; 22 (2):179-183.

DOI: 10.5005/jp-journals-10024-3077

License: CC BY-NC 4.0

Published Online: 01-02-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim: Evaluation and comparison of flexural strength and hardness of heat-cured polymethylmethacrylate (PMMA) denture base with polyetheretherketone (PEEK). Material and methods: A total of 80 samples of PEEK and PMMA were prepared and divided into two groups: group A and group B, of 40 each. Both the groups were further divided into subgroups consisting of 20 samples of PMMA and PEEK. The group A specimens were tested for flexural strength by universal testing machine (UTM), and group B samples were subjected to hardness test using Vickers microhardness tester. The values obtained were subjected to statistical analysis. The readings were subjected to an unpaired t-test for comparison of flexural strength and hardness of PEEK and PMMA. Result: The flexural strength of PEEK was 183 MPa, while that of PMMA was 84 MPa. The hardness of PEEK and PMMA was 24 VHN and 19.4 VHN, respectively. Conclusion: It was observed that PEEK can be a potential denture base material with superior properties as compared to PMMA. Further researches are needed to be carried out. Clinical significance: PEEK as a denture base exhibits adequate flexural strength prolonging its clinical longevity and overcoming the most common reason for the failure of PMMA denture base that results in fracture.


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  1. Khindria SK, Mittal S, Sukhija U. Evolution of denture base materials. J Indian Prosthodont Soc 2009;9(2):64–69. DOI: 10.4103/0972-4052.55246.
  2. Tandon R. Denture base materials: from past to future. Indian J Dent Sci 2010;2:33–39 .
  3. Jagger RG. Effect of the curing cycle on some properties of a polymethylmethacrylate denture base material. J Oral Rehabil 1978;5(2):151–157. DOI: 10.1111/j.1365-2842.1978.tb01208.x.
  4. Nejatian T, Johnson A, Noort RV. Reinforcement for denture base resin. Int J Adv Sci 2006;4:124–129. DOI: 10.4028/www.scientific.net/AST.49.124
  5. Heimer S, Schmidlin PR, Roos M, et al. Surface properties of polyetheretherketone after different laboratory and chairside polishing protocols. J Prosthet Dent 2017;117(3):419–425. DOI: 10.1016/j.prosdent.2016.06.016.
  6. Anusavice KJ. Phillips science of dental materials. 11th ed. W.B Saunders; 2003. p. 78–98.
  7. Peyton FA. History of resins in dentistry. Dent Clin North Am 1975;19(2):211–222.
  8. Yazdanie N, Mahood M. Carbon fiber acrylic resin composite: an investigation of transverse strength. J Prosthet Dent 1985;54(4):543–547. DOI: 10.1016/0022-3913(85)90431-7.
  9. Phoenix RD. Denture base materials. Dent Clin North Am 1996;40(1):113–120. DOI: 10.5005/jcdp-6-4-93
  10. Meng TR, Latta MA. Physical properties of four acrylic denture base resins. J Contemp Dent Pract 2005;6(4):93–100.
  11. Uzun G, Hersek N, Tincer T. Effect of five woven fiber reinforcements on the impact and transverse strength of a denture base resin. J Prosthet Dent 1999;81(5):616–620. DOI: 10.1016/s0022-3913(99)70218-0.
  12. Beyli MS, Fraunhofer JA. An analysis of causes of fracture of acrylic resin dentures. J Prosthet Dent 1981;46(3):238–241. DOI: 10.1016/0022-3913(81)90206-7.
  13. Kurtz SM. An overview of PEEK biomaterials. In: PEEK Biomaterials Handbook, Elsevier; 2012. p. 1–7.
  14. Zhang Z, Breidt C, Chang L, et al. Wear of PEEK composites related to their mechanical performances. Tribol Int 2004;37(3):271–277. DOI: 10.1016/j.triboint.2003.09.005.
  15. Brillhart M, Botsis J. Fatigue crack growth analysis in PEEK. Int J Fatigue 1996;16(2):134–140. DOI: 10.1016/0142-1123(94)90103-1
  16. Sobieraj MC, Rimnac. Fracture, fatigue, and notch behavior of PEEK. In: PEEK biomaterials handbook. Elsevier; 2012. p. 61–73.
  17. Zappini G, Kammann A, Wachter W. Comparison of fracture tests of denture base materials. J Prosthet Dent 2003;90(6):578–585. DOI: 10.1016/j.prosdent.2003.09.008.
  18. Chinchumnong, Stafford GD. Comparison of three- and four-point flexural testing of denture base polymers. Dent Mat J 1989;5(1):2–5. DOI: 10.1016/0109-5641(89)90082-1.
  19. Alhareb AO, Akil H, ZA. Impact strength, fracture toughness and hardness improvement of PMMA denture base through addition of nitrile rubber/ceramic fillers. Saudi J Dent Res 2017;8(1–2):26–34. DOI: 10.1016/j.sjdr.2016.04.004.
  20. Fraunhofer V, Suchatlampong C. The surface characteristics of denture base polymers. J Dent 1975;3(3):105–109. DOI: 10.1016/0300-5712(75)90060-3.
  21. Braun KO, Mello JAN, Rached RN, et al. Surface texture and some properties of acrylic resins submitted to chemical polishing. J Oral Rehabil 2003;30(1):91–98. DOI: 10.1046/j.1365-2842.2003.00997.x.
  22. Machado C, Sanchez E, Azer SS, et al. Comparative study of the transverse strength of three denture base materials. J Dent 2007;35(12):930–933. DOI: 10.1016/j.jdent.2007.09.006.
  23. Dixon DL, Ekstrand KG, Breeding LC. The transverse strengths of three denture base resins. J Prosthet Dent 1991;66(4):510–513. DOI: 10.1016/0022-3913(91)90514-w.
  24. Schwitalla A, Spintig T, Kallage I, et al. Flexural behavior of PEEK materials for dental application. Dent Mater 2015;31:1377–1384. DOI: 10.1016/j.dental.2015.08.151.
  25. Ali IL, Yunus N, Abu-Hassan MI. Hardness, flexural strength, and flexural modulus comparisons of three differently cured denture base systems. J Prosthodont 2008;17(7):545–549. DOI: 10.1111/j.1532-849X.2008.00357.x.
  26. Mathew MSK, Ravishanka KS. Vickers hardness and specific wear rate of polypropylene reinforced PMMA. Int J Sci Study 2014;2(3):71–75.
  27. Duymus ZY, Ozdogan A, Ulu H, et al. Evaluation the Vickers hardness of denture base materials. Open J Stomatol 2016;6(4):114–119. DOI: 10.4236/ojst.2016.64014.
  28. Goyal RK, Tiwari AN, Mulik UP, et al. Study on micro hardness, dynamic mechanical and tribological properties of PEEK/Al2O3 composites. J Appl Polym Sci 2008;110(6):3379–3387. DOI: 10.1002/app.28925.
  29. Muhsin SA, Hatton PV, Johnson A, et al. Determination of polyetheretherketone (PEEK) mechanical properties as a denture material. Saudi J Dent Res 2019;31(3):382–391. DOI: 10.1016/j.sdentj.2019.03.005.
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