Journal of Korean Dental Science

Korean Academy of Dental Science (대한치의학회)
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Evaluation of Mechanical Properties of Three-dimensional Printed Flexible Denture Resin according to Post-polymerization Conditions: A Pilot Study

  • Lee, Sang-Yub (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Lim, Jung-Hwa (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Shim, June-Sung (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Kim, Jong-Eun (Department of Prosthodontics, Yonsei University College of Dentistry)
  • Received : 2021.11.07
  • Accepted : 2022.03.16
  • Published : 2022.06.30
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Abstract

Purpose: The purpose of this study was to evaluate whether three-dimensional (3D)-printed flexible denture resin has suitable mechanical properties for use as a thermoplastic denture base resin material. Materials and Methods: A total of 96 specimens were prepared using the 3D printed flexible denture resin (Flexible Denture). Specimens were designed in CAD software (Tinkercad) and printed through a digital light-processing 3D printer (Asiga MAX UV). Post-polymerization process was conducted according to air exposure or glycerin immersion at 35℃ or 60℃ and for 30 or 60 minutes. The maximum flexural strength, elastic modulus, 0.2% offset yield strength, and Vickers hardness of 3D-printed flexible denture resin were assessed. Result: The maximum flexural strength ranged from 64.46±2.03 to 84.25±4.32 MPa, the 0.2% offset yield strength ranged from 35.28±1.05 to 46.13±2.33 MPa, the elastic modulus ranged from 1,764.70±64.66 to 2,179.16±140.01 MPa, and the Vickers hardness ranged from 7.01±0.40 to 11.45±0.69 kg/mm2. Conclusion: Within the limits of the present study, the maximum flexural strength, 0.2% offset yield strength, elastic modulus, and Vickers hardness are sufficient for clinical use under the post-polymerization conditions of 60℃ at 60 minutes with or without glycerin precipitation.

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References

  1. Cunnigham DM. Comparison of base metal alloys and type IV gold alloys for removable partial denture frameworks. Dent Clin North Am. 1973; 17: 719-22. https://doi.org/10.1016/S0011-8532(22)00707-8
  2. Lapcevic AR, Jevremovic DP, Puskar TM, Williams RJ, Eggbeer D. Comparative analysis of structure and hardness of cast and direct metal laser sintering produced Co-Cr alloys used for dental devices. Rapid Prototyp J. 2016; 22: 144-51. https://doi.org/10.1108/RPJ-04-2014-0051
  3. Hamanaka I, Takahashi Y, Shimizu H. Mechanical properties of injection-molded thermoplastic denture base resins. Acta Odontol Scand. 2011; 69: 75-9. https://doi.org/10.3109/00016357.2010.517557
  4. Kawara M, Iwata Y, Iwasaki M, Komoda Y, Iida T, Asano T, Komiyama O. Scratch test of thermoplastic denture base resins for non-metal clasp dentures. J Prosthodont Res. 2014; 58: 35-40. https://doi.org/10.1016/j.jpor.2013.10.002
  5. Hamanaka I, Shimizu H, Takahashi Y. Shear bond strength of an autopolymerizing repair resin to injection-molded thermoplastic denture base resins. Acta Odontol Scand. 2013; 71: 1250-4. https://doi.org/10.3109/00016357.2012.757645
  6. Marsango V, Bollero R, D'Ovidio N, Miranda M, Bollero P, Barlattani A Jr. Digital work-flow. Oral Implantol (Rome). 2014; 7: 20-4.
  7. Lee WS, Lee DH, Lee KB. Evaluation of internal fit of interim crown fabricated with CAD/CAM milling and 3D printing system. J Adv Prosthodont. 2017; 9: 265-70. https://doi.org/10.4047/jap.2017.9.4.265
  8. Kessler A, Hickel R, Reymus M. 3D printing in dentistry-state of the art. Oper Dent. 2020; 45: 30-40. https://doi.org/10.2341/18-229-l
  9. Van Noort R. The future of dental devices is digital. Dent Mater. 2012; 28: 3-12. https://doi.org/10.1016/j.dental.2011.10.014
  10. Ligon SC, Liska R, Stampfl J, Gurr M, Mulhaupt R. Polymers for 3D printing and customized additive manufacturing. Chem Rev. 2017; 117: 10212-90. https://doi.org/10.1021/acs.chemrev.7b00074
  11. Jindal P, Juneja M, Bajaj D, Siena FL, Breedon P. Effects of post-curing conditions on mechanical properties of 3D printed clear dental aligners. Rapid Prototyp J. 2020; 26: 1337-44. https://doi.org/10.1108/rpj-04-2019-0118
  12. Scherer MD, Barmak BA, Ozcan M, Revilla-Leon M. Influence of postpolymerization methods and artificial aging procedures on the fracture resistance and flexural strength of a vat-polymerized interim dental material. J Prosthet Dent. 2021. doi: 10.1016/ j.prosdent.2021.02.017. [Epub ahead of print]
  13. Bayarsaikhan E, Lim JH, Shin SH, Park KH, Park YB, Lee JH, Kim JE. Effects of postcuring temperature on the mechanical properties and biocompatibility of three-dimensional printed dental resin material. Polymers (Basel). 2021; 13: 1180. https://doi.org/10.3390/polym13081180
  14. Ligon SC, Husar B, Wutzel H, Holman R, Liska R. Strategies to reduce oxygen inhibition in photoinduced polymerization. Chem Rev. 2014; 114: 557-89. https://doi.org/10.1021/cr3005197
  15. International Organization for Standardization. ISO 20795-1: dentistry - base polymers - part 1: denture base polymers. Geneva: International Organization for Standardization; 2013.
  16. Di Fiore A, Meneghello R, Brun P, Rosso S, Gattazzo A, Stellini E, Yilmaz B. Comparison of the flexural and surface properties of milled, 3D-printed, and heat polymerized PMMA resins for denture bases: an in vitro study. J Prosthodont Res. 2021. doi: 10.2186/jpr.JPR_D_21_00116. [Epub ahead of print]
  17. Fitri AA, Nasution H, Andryas I, Wahyuni S, Ritonga PWU, Chairunnisa R, Dallmer A. The difference and correlation of modulus of elasticity and surface hardness of PMMA and thermoplastic nylon denture base materials. J Int Dent Med Res. 2020; 13: 1598-603.
  18. Bagis YH, Rueggeberg FA. Effect of post-cure temperature and heat duration on monomer conversion of photo-activated dental resin composite. Dent Mater. 1997; 13: 228-32. https://doi.org/10.1016/S0109-5641(97)80033-4
  19. Ferracane J, Condon J. Post-cure heat treatments for composites: properties and fractography. Dent Mater. 1992; 8: 290-5. https://doi.org/10.1016/0109-5641(92)90102-I
  20. Chen H, Cheng DH, Huang SC, Lin YM. Comparison of flexural properties and cytotoxicity of interim materials printed from mono-LCD and DLP 3D printers. J Prosthet Dent. 2021; 126: 703-8. https://doi.org/10.1016/j.prosdent.2020.09.003
  21. Hamanaka I, Iwamoto M, Lassila L, Vallittu P, Shimizu H, Takahashi Y. Influence of water sorption on mechanical properties of injection-molded thermoplastic denture base resins. Acta Odontol Scand. 2014; 72: 859-65. https://doi.org/10.3109/00016357.2014.919662
  22. Ayaz EA, Bagis B, Turgut S. Effects of thermal cycling on surface roughness, hardness and flexural strength of polymethylmethacrylate and polyamide denture base resins. J Appl Biomater Funct Mater. 2015; 13: e280-6.
  23. 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: 545-9. https://doi.org/10.1111/j.1532-849X.2008.00357.x
  24. Alhareb AO, Akil HM, Ahmad 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: 26-34. https://doi.org/10.1016/j.sjdr.2016.04.004
  25. Fueki K, Ohkubo C, Yatabe M, Arakawa I, Arita M, Ino S, Kanamori T, Kawai Y, Kawara M, Komiyama O, Suzuki T, Nagata K, Hosoki M, Masumi S, Yamauchi M, Aita H, Ono T, Kondo H, Tamaki K, Matsuka Y, Tsukasaki H, Fujisawa M, Baba K, Koyano K, Yatani H. Clinical application of removable partial dentures using thermoplastic resin-part I: definition and indication of non-metal clasp dentures. J Prosthodont Res. 2014; 58: 3-10. https://doi.org/10.1016/j.jpor.2013.12.002
  26. Hamanaka I, Iwamoto M, Lassila LVJ, Vallittu PK, Takahashi Y. Wear resistance of injection-molded thermoplastic denture base resins. Acta Biomater Odontol Scand. 2016; 2: 31-7. https://doi.org/10.3109/23337931.2015.1135747