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A Comparison Among Additive Manufactured Polymeric Complete Dental Models Resulting from Intraoral Scans: an in Vivo Study

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The use of intraoral scanners and Additive Manufacturing (AM) techniques in dentistry is increasing, and such technologies are integrated in daily workflows for the production of various types of dental restorations. Thus, it is clinically sensible to assess the accuracy of these systems. This in vivo study presents a comparison, in term of accuracy, among three commercially available AM systems, used to rapid prototype models obtained from intraoral scans data. Eight patients with a complete dentition were selected. Complete-arch scans of both upper and lower jaws were obtained using the 3Shape Trios 3 color intraoral scanner. The corresponding CAD models were created by means of the 3Shape Dental System software, and three AM systems, Photocentric LC10 (AM1), Zortrax M 200 (AM2) and Prusa I3 (AM3) were used to manufacture them. The manufactured fourty-eight models were scanned with the 3Shape Trios 3 color scanner, by the same operator. Scans of the manufactured models were aligned and compared to the reference intraoral scan by means of a Reverse Engineering software (Geomagic Studio). The comparison between the scans of the manufactured models and the reference intraoral scans, for the eight patients, shows a standard deviation (SD) in the range 0.11 – 0.27 mm for AM1, in the range 0.04 – 0.26 mm for AM2 and in the range 0.07 – 0.26 mm for AM3. The results of this research show that Prusa I3 and Zortrax M 200 are statistically more accurate than Photocentric LC10. Nevertheless, if we consider the amount of difference in accuracy, this may be not relevant from a clinical point of view. Thus, the three AM systems can be used in some dental applications which are compatible with the reported accuracy.
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Additive Manufacturing; Intraoral Scans; Dentistry; Dental Models; Orthodontic Appliances

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S. C. Ligon, R. Liska, J. Stampfl, M. Gurr, and R. Mülhaupt, Polymers for 3D printing and customized additive manufacturing, Chemical Reviews, 117(15): 10212-10290, 2017.

A. Barazanchi, K. C. Li, B. Al-Amleh, K. Lyons, and J. N. Waddell, Additive technology: Update on current materials and applications in dentistry, Journal of Prosthodontics, Vol. 26(2): 156-163, 2017.

E. J. Bae, I. D. Jeong, W. C. Kim, and J. H. Kim, A comparative study of additive and subtractive manufacturing for dental restorations, Journal of Prosthetic Dentistry, 118(2): 187-193, 2017.

B. J. Goodacre, C. J. Goodacre, Using Intraoral Scanning to Fabricate Complete Dentures: First Experiences, International Journal of Prosthodontics, 31(2):166-170, 2018.

J. Wu, Y. Li, and Y. Zhang, Use of intraoral scanning and 3-dimensional printing in the fabrication of a removable partial denture for a patient with limited mouth opening, Journal of the American Dental Association, 148(5): 338-341, 2017.

Y. L. Xie, G. Shen, Accuracy and reproducibility of intraoral scanning in vivo, Shanghai Kou Qiang Yi Xue, 25(5):593-599, 2016.

F. M. Sakr, K. G. Al Obaidy, M. Q. Assery, J. A. Alsanea, and A. I. Adam, Digitized dentistry: Technology that peaked up the professionality of dental practitioners, Saudi J Oral Sci, Vol. 4(1):3-11, 2017.

L. O. L. Bohner, G. D. L. Canto, B. S. Marció, D. C. Laganá, N. Sesma, and P.T. Neto, Computer-aided analysis of digital dental impressions obtained from intraoral and extraoral scanners, Journal of Prosthetic Dentistry, 118(5): 617-623, 2017.

Q. Liu, M. C. Leu, and S. M. Schmitt, Rapid prototyping in dentistry: technology and application. International Journal of Advanced Manufacturing Technology, 29(3-4): 317-335, 2006.

F. P. Melchels, J. Feijen, and D. W. Grijpma, A review on stereolithography and its applications in biomedical engineering, Biomaterials, 31(24): 6121-6130, 2010.

D. P. Sarment, P. Sukovic, and N. Clinthorne, Accuracy of implant placement with a stereolithographic surgical guide, International Journal of Oral & Maxillofacial Implants, 18(4): 571-577, 2003.

I. Gibson, L. K. Cheung, S. P. Chow, W.L. Cheung, S. L. Beh, M. Savalani, and S. H. Lee, The use of rapid prototyping to assist medical applications, Rapid Prototyping Journal, 12(1): 53-58, 2006.

A. Azari, and S. Nikzad, The evolution of rapid prototyping in dentistry: a review, Rapid Prototyping Journal, 15(3): 216-225, 2009.

A. Ender, and A. Mehl, Accuracy of complete-arch dental impressions: a new method of measuring trueness and precision. Journal of Prosthetic Dentistry, 109(2): 121-128, 2013.

D. T. Chandran, D. C. Jagger, R. G. Jagger, and M. E. Barbour, Two-and three-dimensional accuracy of dental impression materials: effects of storage time and moisture contamination, Bio-Medical Materials and Engineering, 20(5): 243-249, 2010.

R. G. Luthardt, R. Loos, and S. Quaas, Accuracy of intraoral data acquisition in comparison to the conventional impression, International journal of computerized dentistry, 8(4): 283-294, 2005.

A. Piwowarczyk, P. Ottl, A. Büchler, H.C. Lauer, and A. Hoffmann, In vitro study on the dimensional accuracy of selected materials for monophase elastic impression making, International Journal of Prosthodontics, 15(2): 168-74, 2002.

S. Thongthammachat, B. K. Moore, M. T. Barco, S. Hovijitra, D. T. Brown, and C. J. Andres, Dimensional accuracy of dental casts: influence of tray material, impression material, and time, Journal of Prosthodontics, 11(2): 98-108, 2002.

S. Gelbard, Y. Aoskar, M. Zalkind, and N. Stern, Effect of impression materials and techniques on the marginal fit of metal castings, The Journal of prosthetic dentistry, 71(1): 1-6, 1994.

A. Peutzfeldt, and E. Asmussen, Accuracy of alginate and elastomeric impression materials. European Journal of Oral Sciences, 97(4): 375-379, 1989.

P. Franciosa, and M. Martorelli, Stress-based performance comparison of dental implants by finite element analysis, International Journal on Interactive Design and Manufacturing, 6(2): 123-129, 2012.

P. Ausiello, S. Ciaramella, F. Garcia-Godoy, A. Gloria, A. Lanzotti, S. Maietta, and M. Martorelli, The effects of cavity-margin-angles and bolus stiffness on the mechanical behavior of indirect resin composite class II restorations, Dental Materials, 33(1), e39-e47, 2017.

P. Ausiello, S. Ciaramella, A. Fabianelli, A. Gloria, M. Martorelli, A. Lanzotti, and D. C. Watts, Mechanical behavior of bulk direct composite versus block composite and lithium disilicate indirect Class II restorations by CAD-FEM modeling, Dental Materials, 33(6):690-701, 2017.

P. Ausiello, S. Ciaramella, M. Martorelli, A. Lanzotti, F. Zarone, D. C. Watts, and A. Gloria, Mechanical behavior of endodontically restored canine teeth: Effects of ferrule, post material and shape, Dental Materials, 33(12): 1466-1472, 2017.

H. Rudolph, R. G. Luthardt, and M. H. Walter, Computer-aided analysis of the influence of digitizing and surfacing on the accuracy in dental CAD/CAM technology. Computers in biology and medicine, 37(5): 579-587, 2007.

F. Beuer, J. Schweiger, and D. Edelhoff, Digital dentistry: an overview of recent developments for CAD/CAM generated restorations. British dental journal, 204(9), 505-511, 2008.

S. Quaas, H. Rudolph, and R.G. Luthardt, Direct mechanical data acquisition of dental impressions for the manufacturing of CAD/CAM restorations. Journal of dentistry, 35(12): 903-908, 2007.

J. Stampfl, and R. Liska, New materials for rapid prototyping applications, Macromolecular Chemistry and Physics, 206(13), 1253-1256, 2005.

A. Lanzotti, M. Grasso, G. Staiano, and M. Martorelli, The impact of process parameters on mechanical properties of parts fabricated in PLA with an open-source 3-D printer. Rapid Prototyping Journal, 21(5): 604-617, 2015.

A. Lanzotti, M. Martorelli, and G. Staiano, Understanding process parameter effects of reprap open-source three-dimensional printers through a design of experiments approach, Journal of Manufacturing Science and Engineering, 137(1): 1-7, 2015.


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