Three-Dimensional Accuracy Evaluation of Two Additive Manufacturing Processes in the Production of Dental Models

Abstract:

In the current orthodontic and prosthodontics practice, study models made of plaster are being used to provide a three-dimensional view of the patient’s occlusion and allow the clinician to analyze, diagnose, or monitor anomalies. With the introduction of intraoral and extra oral digital impressions, it is now possible to obtain digital study models of the patients’ dental arches. Digital models can be obtained in a physical hardcopy via 3D printing or rapid prototyping. Although, professional 3D printers require a high initial set-up cost, low cost 3D printers can provide similar quality products. The aim of this study is to investigate the accuracy of physical dental models reconstructed from digital data by two rapid prototyping techniques. For this purpose twenty mandibular and maxillary conventional plaster models from randomly chosen subjects were selected and served as the gold standard. The casts were digitized using a 3D scanner and .stl surface models were acquired; the virtual model was adjusted for reconstruction using dedicated software, thus obtaining the CAD model of the casts. The CAD models were reconstructed using a 3D fused deposition modeling (FDM) printer, a RepRap FDM printer and an inverted stereolithography printer. The reconstructed models were digitized using a laboratory 3D scanner and the resulting Mesh datasets were compared with the CAD model using inspection software. The mean systematic differences for the 3D comparison of the reconstructed models were 0.207 mm for the stereolithography models, 0.156 mm for the FDM models, and 0.128 mm for the RepRap models. Although a technology proved the ability to manufacture a dental model with accentuated morphology, the results demonstrate that replicas of plaster casts are influenced by problems linked to the size of the detail to be reproduced, which is often similar to or finer than the fabrication layer.

• Periodical: Key Engineering Materials (Volume 752)
• Pages: 119-125
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.752.119
• Online since: August 2017
• Authors: Alexandru Victor Burde*, Cristina Gasparik, Sorana Baciu, Marius Manole, Diana Dudea, Radu Septimiu Câmpian
• Keywords: Additive Manufacturing, Dental Models, Fused Deposition Modeling, Stereolithography

References

[1] M.L. Quimby, K.W. Vig, R.G. Rashid, A.R. Firestone, The accuracy and reliability of measurements made on computer-based digital models, Angle Orthod. 74 (2004) 298-303.

[2] The glossary of prosthodontic terms, J Prosthet Dent. 94 (2005) 10-92.

[3] M. Arora, S. Kohli, R. Kalsi, Influence of Custom Trays, Dual-Arch Passive, Flexed Trays and Viscosities of Elastomeric Impression Materials on Working Dies, J Clin Diagn Res. 10 (2016) ZC112-6.

DOI: 10.7860/jcdr/2016/16851.7840

[4] T. Balamurugan, P. Manimaran, Evaluation of accuracy of direct transfer snapon impression coping closed tray impression technique and direct transfer open tray impression technique: an in vitro study, J Indian Prosthodont Soc. 13 (2013) 226-32.

DOI: 10.1007/s13191-012-0141-x

[5] M.M. Kulkarni, R.U. Thombare, Dimensional Changes of Alginate Dental Impression Materials-An Invitro Study, J Clin Diagn Res. 9 (2015) ZC98-ZC102.

[6] M. Vojdani, K. Torabi, E. Ansarifard, Accuracy of different impression materials in parallel and nonparallel implants, Dent Res J (Isfahan). 12 (2015) 315-22.

DOI: 10.4103/1735-3327.161429

[7] R. Nagrath, M. Lahori, M. Agrawal, A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction of Four Hydrophilic Vinyl Polysiloxane Impression Materials Tested Under Dry, Moist, and Wet Conditions-An In Vitro Study, J Indian Prosthodont Soc. 14 (2014).

DOI: 10.1007/s13191-014-0365-z

[8] A.C. Faria, R.C. Rodrigues, A.P. Macedo, G. Mattos Mda, R.F. Ribeiro, Accuracy of stone casts obtained by different impression materials, Braz Oral Res. 22 (2008) 293-8.

DOI: 10.1590/s1806-83242008000400002

[9] N.A. Pande, R.D. Parkhedkar, An evaluation of dimensional accuracy of one-step and two-step impression technique using addition silicone impression material: an in vitro study, J Indian Prosthodont Soc. 13 (2013) 254-9.

DOI: 10.1007/s13191-012-0182-1

[10] B.M. Zen, E.F. Soares, M.A. Rodrigues, L.F. Luthi, R.L. Consani, M.F. Mesquita, G.E. Henriques, Comparison of the Accuracy of Different Transfer Impression Techniques for Osseointegrated Implants, J Oral Implantol. 41 (2015) 662-7.

DOI: 10.1563/aaid-joi-d-13-00126

[11] N. Kumari, D.B. Nandeeshwar, The dimensional accuracy of polyvinyl siloxane impression materials using two different impression techniques: An in vitro study, J Indian Prosthodont Soc. 15 (2015) 211-7.

DOI: 10.4103/0972-4052.158074

[12] H. Siadat, M. Alikhasi, E. Beyabanaki, S. Rahimian, Comparison of different Impression Techniques When Using the All-on-Four Implant Treatment Protocol, Int J Prosthodont. 29 (2016) 265-70.

DOI: 10.11607/ijp.4341

[13] S.S. Kamble, R.V. Khandeparker, P. Somasundaram, S. Raghav, R.P. Babaji, T.J. Varghese, Comparative Evaluation of Dimensional Accuracy of Elastomeric Impression Materials when Treated with Autoclave, Microwave, and Chemical Disinfection, J Int Oral Health. 7 (2015).

[14] F. Saleh Saber, N. Abolfazli, M. Kohsoltani, The effect of disinfection by spray atomization on dimensional accuracy of condensation silicone impressions, J Dent Res Dent Clin Dent Prospects. 4 (2010) 124-9.

DOI: 10.5897/ajb11.1817

[15] T. Hacker, G. Heydecke, D.R. Reissmann, Impact of procedures during prosthodontic treatment on patients' perceived burdens, J Dent. 43 (2015) 51-7.

DOI: 10.1016/j.jdent.2014.10.013

[16] P. Padevět, P. Tesárek, T. Plachý, Evolution of mechanical properties of gypsum in time, International Journal of Mechanics. 12 (2011) 124-129.

[17] N.J. McGuinness, C.D. Stephens, Storage of orthodontic study models in hospital units in the U. K, Br J Orthod. 19 (1992) 227-232.

[18] F. Duret, J.L. Blouin, B. Duret, CAD-CAM in dentistry, J Am Dent Assoc. 117 (1988) 715-20.

DOI: 10.14219/jada.archive.1988.0096

[19] M. Mayers, A.R. Firestone, R. Rashid, K.W. Vig, Comparison of peer assessment rating (PAR) index scores of plaster and computer-based digital models, Am J Orthod Dentofacial Orthop. 128 (2005) 431-434.

DOI: 10.1016/j.ajodo.2004.04.035

[20] J.F. Güth, C. Keul, M. Stimmelmayr, F. Beuer, D. Edelhoff, Accuracy of digital models obtained by direct and indirect data capturing, Clin Oral Investig. 17 (2013) 1201-8.

DOI: 10.1007/s00784-012-0795-0

[21] P. Seelbach, C. Brueckel, B. Wöstmann, Accuracy of digital and conventional impression techniques and workflow, Clin Oral Investig. 17 (2013) 1759-64.

DOI: 10.1007/s00784-012-0864-4

[22] M. Rödiger, A. Heinitz, R. Bürgers, S. Rinke, Fitting accuracy of zirconia single crowns produced via digital and conventional impressions-a clinical comparative study, Clin Oral Investig. 2016 Jul 28. DOI: 10. 1007/s00784-016-1924-y.

DOI: 10.1007/s00784-016-1924-y

[23] J. Radeke, C. von der Wense, B.G. Lapatki, Comparison of orthodontic measurements on dental plaster casts and 3D scans, J Orofac Orthop. 75 (2014) 264-74.

DOI: 10.1007/s00056-014-0217-9

[24] A.P. Keating, J. Knox, R. Bibb, A.I. Zhurov, A comparison of plaster, digital and reconstructed study model accuracy. J Orthod. 35 (2008) 191-201.

DOI: 10.1179/146531207225022626

[25] B. Luan, M. Yeung, W. Wells, X. Liu, Chemical surface preparation for metallization of stereolithography polymers, Applied Surface Science. 156 (2000) 26–38.

DOI: 10.1016/s0169-4332(99)00339-6

[26] A. Hazeveld, J.J.R. Huddleston Slater, Y. Ren, Accuracy and reproducibility of dental replica models reconstructed by different rapid prototyping techniques, Am J Orthod Dentofac Orthop. 145 (2014) 108–15.

DOI: 10.1016/j.ajodo.2013.05.011

[27] K. Murugesan, P.A. Anandapandian, S.K. Sharma, M. Vasantha Kumar, Comparative evaluation of dimension and surface detail accuracy of models produced by three different rapid prototype techniques, J Indian Prosthodont Soc. 12 (2012) 16–20.

DOI: 10.1007/s13191-011-0103-8

[28] M. Kasparova, L. Grafova, P. Dvorak, T. Dostalova, A. Prochazka, H. Eliasova, Possibility of reconstruction of dental plaster cast from 3D digital study models, Biomed Eng Online. 12 (2013) 49.

DOI: 10.1186/1475-925x-12-49

[29] S.B. Patzelt, S. Bishti, S. Stampf, W. Att, Accuracy of computer-aided design/computer-aided manufacturing-generated dental casts based on intraoralscanner data, J Am Dent Assoc. 145 (2014) 1133-40.

DOI: 10.14219/jada.2014.87

[30] W.K. Saleh, E. Ariffin, M. Sherriff, D. Bister, Accuracy and reproducibility of linear measurements of resin, plaster, digital and printed study-models, J Orthod. 42 (2015) 301-6.

DOI: 10.1179/1465313315y.0000000016

[31] G.K. Koch, G.O. Gallucci, S.J. Lee, Accuracy in the digital workflow: From data acquisition to the digitally milled cast, J Prosthet Dent. 115 (2016) 749-54.

DOI: 10.1016/j.prosdent.2015.12.004

[32] G. Uzun, An Overview of Dental CAD/CAM Systems, Biotechnology & Biotechnological Equipment. 22 (2008) 530-35.

DOI: 10.1080/13102818.2008.10817506