Denture base polymers for analog and digital manufacturing: comparative study of the flexural strength, elastic modulus, and compressive strength of their mechanical properties
DOI:
https://doi.org/10.17533/udea.rfo.v33n1a1Keywords:
Dental materials, Acrylic resins, Denture bases, 3D printing, Cad-camAbstract
Introduction: the emerging manufacture technologies for dental restorations have brought new materials with them, such as 3D-printing resins and CAD/CAM discs for the manufacturing of denture bases. Currently, there is no rigorous mechanical characterization for these materials in the literature, apart from the ones reported in technical datasheets. Method: samples for mechanical characterization were manufactured with a conventional heat cure acrylic, a CAD/CAM polymethyl methacrylate (PMMA) disc and two 3D-printing resins. The samples were tested in a universal testing machine, according to ISO 20795-1 for flexural strength and elastic modulus. Compression strength was also determined under dry conditions. The average value of each property was calculated (n = 5). One-way ANOVA and Tukey’s multiple comparisons tests were used. Results: mean flexural strengths ranged from 78.35±2.99 to 87.48±4.47MPa, elastic moduli were between 2125.43±57.05 and 2277.72±58.46MPa, and compression strengths values ranged from 85.03±2.14 to 119.15±2.87MPa. Statistical analyses showed significant differences for flexural and compression strengths but did not show any difference for elastic moduli. Conclusions: all the tested materials met the minimum required specification for mechanical properties given by ISO 20795-1. From a mechanical point of view, the new materials for digital technologies, i.e., CAD/CAM disc and 3D-printing resins, are suitable for denture-base applications.
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References
Rudolph H, Salmen H, Moldan M, Kuhn K, Sichwardt V, Wöstmann B et al. Accuracy of intraoral and extraoral digital data acquisition for dental restorations. J Appl Oral Sci. 2016; 24(1): 85-94. DOI: https://dx.doi.org/10.1590%2F1678-775720150266
Son K, Lee WS, Lee KB. Prediction of the learning curves of 2 dental CAD software program. J Prosthet Dent. 2019; 121(1): 95-100. DOI: https://doi.org/10.1016/j.prosdent.2018.01.004
Boitelle P, Mawussi B, Tapie L, Fromentin O. A systematic review of CAD/CAM fit restoration evaluations. J Oral Rehabil. 2014; 41(11): 853-74. DOI: https://doi.org/10.1111/joor.12205
Galante R, Figuereido-Pino CG, Serro AP. Additive manufacturing of ceramics for dental applications: a review. Dent Mater. 2019; 35(6): 825-46. DOI: https://doi.org/10.1016/j.dental.2019.02.026
Sadid-Zadeh R, Katsavochristou A, Squires T, Simon M. Accuracy of marginal fit and axial wall contour for lithium disilicate crowns fabricated using three digital workflows. J Prosthet Dent. 2020; 123(1): 121-27. DOI: https://doi.org/10.1016/j.prosdent.2018.11.003
Kim DY, Jeon JH, Kim JH, Kim HY, Kim WC. Reproducibility of different arrangement of resin copings by dental microstereolithography: evaluating the marginal discrepancy of resin copings. J Prosthet Dent. 2017; 117(2): 260-65. DOI: https://doi.org/10.1016/j.jds.2017.06.006
Kang SY, Lee HN, Kim JH, Kim WC. Evaluation of marginal discrepancy of pressable ceramic veneer fabricated using CAD/CAM system: additive and subtractive manufacturing. J Adv Prosthodont. 2018; 10(5): 347–53. DOI: https://dx.doi.org/10.4047%2Fjap.2018.10.5.347
Schaefer O, Kuepper H, Sigusch BW, Thompson GA, Hefti AF, Guentsch A. Three-dimensional fit of lithium disilicate partial crowns in vitro. J Dent. 2013; 41(3): 271-7. DOI: https://doi.org/10.1016/j.jdent.2012.11.014
Bombac D, Brojan M, Fajfar P, Kosel F, Turk R. Review of materials in medical applications. Materials and Geoenvironment. 2007; 54(4): 471-99.
Digholkar S, Madhav VNV, Palaskar J. Evaluation of the flexural strength and microhardness of provisional crown and bridge materials fabricated by different methods. J Indian Prosthodont Soc. 2016; 16(4): 328-34. DOI: https://doi.org/10.4103/0972-4052.191288
Kalberer N, Mehl A, Schimmel M, Müller F, Srinivasan M. CAD-CAM milled versus rapidly prototyped (3D-printed) complete dentures: an in vitro evaluation of trueness. J Prosthet Dent. 2019; 121(4): 637-43. DOI: https://doi.org/10.1016/j.prosdent.2018.09.001
Cole D, Bencharit S, Carrico CK, Arias A, Tüfekçi E. Evaluation of fit for 3D-printed retainers compared with thermoform retainers. Am J Orthod Dentofacial Orthop. 2019; 155(4): 592-9. DOI: https://doi.org/10.1016/j.ajodo.2018.09.011
Al-Rimawi A, EzEldeen M, Schneider D, Politis C, Jacobs R. 3D printed temporary veneer restoring autotransplanted teeth in children: design and concept validation ex vivo. Int J Environ Res Public Health. 2019; 16(13): 496-505. DOI: https://dx.doi.org/10.3390%2Fijerph16030496
International Organization for Standardization. ISO 20795-1: 2013. Dentistry - Base polymers - Part 1: denture base polymers. 2nd ed. 35p, 2013.
Chitchumnong P, Brooks SC, Stafford GD. Comparison of three-and four-point flexural strength testing of denture base polymers. Dent Mater. 1989; 51(1): 2-5. DOI: https://doi.org/10.1016/0109-5641(89)90082-1
Ajaj-ALKordy NM, Alsaadi MH. Elastic modulus and flexural strength comparisons of high-impact and traditional denture base acrylic resins. Saudi Dent J. 2014; 26(1): 15–8. DOI: https://doi.org/10.1016/j.sdentj.2013.12.005
Sepideh B, Saman S. In vitro comparative study of compressive strength of different types of composite resins in different periods of time. Iran J Pharm Sci. 2008; 4(1): 69–74.
Haselton DR, Diaz-Arnold AM, Vargas MA. Flexural strength of provisional crown and fixed partial denture resins. J Prosthet Dent. 2002; 87(2): 225-8. DOI: https://doi.org/10.1067/mpr.2002.121406
Saen-Isara T, Dechkunakorn S, Anuwongnukroh N, Srikhirin T, Tanodekaew S, Wichai W. Influence of the cross-linking agent on mechanical properties of PMMA powder with compromised particle morphology. Int Orthod. 2017; 15(2): 151-64. DOI: https://doi.org/10.1016/j.ortho.2017.03.007
Revilla-León M, Meyers MJ, Zandinejad A, Özcan M. A review on chemical composition, mechanical properties, and manufacturing work flow of additively manufactured current polymers for interim dental restorations. J Esthet Restor Dent. 2019; 31(1): 51-7. DOI: https://doi.org/10.1111/jerd.12438
New Stetic. Ficha técnica: resina acrílica termopolimerizable Veracril®, Opt i-cryl®. DPFTPT-025. Guarne, Antioquia: New Stetic; 2020. Documento de referencia: DPDDPR-019. Available in https://bit.ly/3g30HaF
New Stetic. Ficha técnica: discos PMMA para CAD/CAM PORTUX HCN. DPFTPT-087. Guarne, Antioquia: New Stetic; 2020. Documento de referencia: DPDDPR-019. Available in https://bit.ly/2Oyh0Rd
Next Dent [Internet]. Netherlands: 3D Systems; 2019. Available in https://nextdent.com/products/denture-3dplus/
Puebla K, Arcaute K, Quintana R, Wicker RB. Effects of environmental conditions, aging, and build orientations on the mechanical properties of ASTM type I specimens manufactured via stereolithography. Rapid Prototyping Journal. 2012; 18(5): 374-88.
Alharbi N, Osman R, Wismeijer D. Effects of build direction on the mechanical properties of 3D-printed complete coverage interim dental restorations. J Prosthet Dent. 2016; 115(6): 760-7. DOI: https://doi.org/10.1016/j.prosdent.2015.12.002
Dimitrov D, Schreve N, de Beer N. Advances in three dimensional printing – state of the art and future perspectives. Rapid Prototyping Journal. 2006; 12(3): 136-47. DOI: https://doi.org/10.1108/13552540610670717
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