Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)

Additive manufacturing is a technology that has many uses across a variety of fields. Its usage spans many fields, including the fields of art, design, architecture, engineering and medicine, including dentistry. The study aims to evaluate and compare the accuracy of three-dimensional printed dental...

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Main Authors: Alexandru Vlasa, Vlad I. Bocanet, Mircea H. Muntean, Anamaria Bud, Bogdan Radu Dragomir, Sorana Nicoleta Rosu, Luminita Lazar, Eugen Bud
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/13/4/2664
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author Alexandru Vlasa
Vlad I. Bocanet
Mircea H. Muntean
Anamaria Bud
Bogdan Radu Dragomir
Sorana Nicoleta Rosu
Luminita Lazar
Eugen Bud
author_facet Alexandru Vlasa
Vlad I. Bocanet
Mircea H. Muntean
Anamaria Bud
Bogdan Radu Dragomir
Sorana Nicoleta Rosu
Luminita Lazar
Eugen Bud
author_sort Alexandru Vlasa
collection DOAJ
description Additive manufacturing is a technology that has many uses across a variety of fields. Its usage spans many fields, including the fields of art, design, architecture, engineering and medicine, including dentistry. The study aims to evaluate and compare the accuracy of three-dimensional printed dental models based on ethylene di-methacrylate using the SLA and DLP techniques. For evaluation, a reference model containing 16 maxillary permanent molars was chosen. An ATOS Capsule 3D scanner was used to scan the reference model. Using a photo-cured liquid resin, eight three-dimensional printed models were obtained using the reference model as benchmark. Four of the models (A1–A4) were obtained using SLA printing technology and four models (B1–B4) were manufactured using DLP printing technology. A standard best fit method was used to pre-align the reference and the printed model surfaces. The height of the teeth, and the mesial–distal and buccal–lingual distances were analyzed. The assessment of the two manufacturing methods was achieved by using non-parametric tests to compare the mean ranks for the assessed features. The results show that models obtained through DLP had a higher precision but also a higher bias. Both methods still are within the required accuracy range for dental models.
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spelling doaj.art-6af95f6615a2448d842369643f484dc02023-11-16T18:59:03ZengMDPI AGApplied Sciences2076-34172023-02-01134266410.3390/app13042664Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)Alexandru Vlasa0Vlad I. Bocanet1Mircea H. Muntean2Anamaria Bud3Bogdan Radu Dragomir4Sorana Nicoleta Rosu5Luminita Lazar6Eugen Bud7Faculty of Dental Medicine, University of Medicine and Pharmacy, Science and Technology George Emil Palade, 540139 Târgu-Mureș, RomaniaDepartment of Industrial Engineering, Faculty of Industrial Engineering, Robotics and Production Management Machine Building, Technical University of Cluj-Napoca, 400144 Cluj-Napoca, RomaniaDepartment of Industrial Engineering, Faculty of Industrial Engineering, Robotics and Production Management Machine Building, Technical University of Cluj-Napoca, 400144 Cluj-Napoca, RomaniaFaculty of Dental Medicine, University of Medicine and Pharmacy, Science and Technology George Emil Palade, 540139 Târgu-Mureș, RomaniaFaculty of Dental Medicine, University of Medicine and Pharmacy Grigore T. Popa, 700115 Iași, RomaniaFaculty of Dental Medicine, University of Medicine and Pharmacy Grigore T. Popa, 700115 Iași, RomaniaFaculty of Dental Medicine, University of Medicine and Pharmacy, Science and Technology George Emil Palade, 540139 Târgu-Mureș, RomaniaFaculty of Dental Medicine, University of Medicine and Pharmacy, Science and Technology George Emil Palade, 540139 Târgu-Mureș, RomaniaAdditive manufacturing is a technology that has many uses across a variety of fields. Its usage spans many fields, including the fields of art, design, architecture, engineering and medicine, including dentistry. The study aims to evaluate and compare the accuracy of three-dimensional printed dental models based on ethylene di-methacrylate using the SLA and DLP techniques. For evaluation, a reference model containing 16 maxillary permanent molars was chosen. An ATOS Capsule 3D scanner was used to scan the reference model. Using a photo-cured liquid resin, eight three-dimensional printed models were obtained using the reference model as benchmark. Four of the models (A1–A4) were obtained using SLA printing technology and four models (B1–B4) were manufactured using DLP printing technology. A standard best fit method was used to pre-align the reference and the printed model surfaces. The height of the teeth, and the mesial–distal and buccal–lingual distances were analyzed. The assessment of the two manufacturing methods was achieved by using non-parametric tests to compare the mean ranks for the assessed features. The results show that models obtained through DLP had a higher precision but also a higher bias. Both methods still are within the required accuracy range for dental models.https://www.mdpi.com/2076-3417/13/4/2664three-dimensional printingdental modelsSLADLP
spellingShingle Alexandru Vlasa
Vlad I. Bocanet
Mircea H. Muntean
Anamaria Bud
Bogdan Radu Dragomir
Sorana Nicoleta Rosu
Luminita Lazar
Eugen Bud
Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)
Applied Sciences
three-dimensional printing
dental models
SLA
DLP
title Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)
title_full Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)
title_fullStr Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)
title_full_unstemmed Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)
title_short Accuracy of Three-Dimensional Printed Dental Models Based on Ethylene Di-Methacrylate-Stereolithography (SLA) vs. Digital Light Processing (DLP)
title_sort accuracy of three dimensional printed dental models based on ethylene di methacrylate stereolithography sla vs digital light processing dlp
topic three-dimensional printing
dental models
SLA
DLP
url https://www.mdpi.com/2076-3417/13/4/2664
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