Accuracy of additively manufactured zirconia four-unit fixed dental prostheses fabricated by stereolithography, digital light processing and material jetting compared with subtractive manufacturing

Lüchtenborg，Jörg1; Willems，Evita2,3; Zhang，Fei2,3; Wesemann，Christian1; Weiss，Florian1; Nold，Julian1; Sun，Jinxing4,5; Sandra，Fabien6; Bai，Jiaming5; Reveron，Helen6; Chevalier，Jérôme6; Spies，Benedikt C.1

2022-09-01

10.1016/j.dental.2022.06.026

DENTAL MATERIALS   影响因子和分区

0109-5641

1879-0097

Objective: To evaluate the manufacturing accuracy of zirconia four-unit fixed dental prostheses (FDPs) fabricated by three different additive manufacturing technologies compared with subtractive manufacturing. Methods: A total of 79 zirconia FDPs were produced by three different manufacturing technologies, representing additive (one stereolithography [aSLA] and one material jetting [aMJ] device, two digital light processing [aDLP1/aDLP2] devices) and subtractive manufacturing (two devices [s1/s2]), the latter serving as references. After printing, additively manufactured FDPs were debound and finally sintered. Subsequently, samples were circumferentially digitized and acquired surface areas were split in three Regions Of Interest (ROIs: inner/outer shell, margin). Design and acquired data were compared for accuracy using an inspection software. Statistical evaluation was performed using the root mean square error (RMSE) and nonparametric Kruskal-Wallis method with post hoc Wilcoxon- Mann-Whitney U tests. Bonferroni correction was applied in case of multiple testing. Results: Regardless the ROI, significant differences were observed between manufacturing technologies (P < 0.001). Subtractive manufacturing was the most accurate with no sig- nificant difference regarding the material/device (s1/s2, P > 0.054). Likewise, no statistical difference regarding accurary was found when comparing s2 with aMJ and aSLA in most ROIs (P > 0.085). In general, mean surface deviation was < 50 mu m for s1/s2 and aMJ and < 100 mu m for aSLA and aDLP2. aDLP1 showed surface deviations > 100 mu m and was the least accurate compared to the other additive/subtractive technologies. Significance: Additive manufacturing represents a promising set of technologies for the manufacturing of zirconia FDPs, but not yet as accurate as subtractive manufacturing. Methodological impact on accuracy within and in between different additive technologies needs to be further investigated. (c) 2022 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.

Additive manufacturing 3D printing Zirconia Accuracy fixed dental protheses Ceramic

SCI ; EI

英语

其他

Dentistry, Oral Surgery & Medicine ; Materials Science

Dentistry, Oral Surgery & Medicine ; Materials Science, Biomaterials

WOS:000850763600003

ELSEVIER SCI LTD

20222812344162

Additives ; Ceramic materials ; Dental prostheses ; Digital devices ; Fabrication ; Mean square error ; Stereolithography

Dental Equipment and Supplies:462.3 ; Heat Treatment Processes:537.1 ; Laser Applications:744.9 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Ceramics:812.1 ; Manufacturing:913.4 ; Mathematical Statistics:922.2

CLINICAL MEDICINE

Web of Science

1.Center for Dental Medicine,Department of Prosthetic Dentistry,Faculty of Medicine,University of Freiburg,Freiburg,Hugstetter Str. 55,79106,Germany
2.KU Leuven (University of Leuven),Department of Materials Engineering,Leuven,Kasteelpark Arenberg 44,B-3001,Belgium
3.KU Leuven (University of Leuven),Department of Oral Health Sciences,BIOMAT -Biomaterials Research group & UZ Leuven (University Hospitals Leuven),Dentistry,Leuven,Kapucijnenvoer 7 block a,B-3000,Belgium
4.School of Metallurgy and Materials,University of Birmingham,UK,B15 2TT,United Kingdom
5.Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials，Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
6.Univ Lyon,CNRS,INSA Lyon,UCBL,MATEIS,UMR5510,Villeurbanne,69621,France

Lüchtenborg，Jörg,Willems，Evita,Zhang，Fei,et al. Accuracy of additively manufactured zirconia four-unit fixed dental prostheses fabricated by stereolithography, digital light processing and material jetting compared with subtractive manufacturing[J]. DENTAL MATERIALS,2022,38(9):1459-1469.

Lüchtenborg，Jörg.,Willems，Evita.,Zhang，Fei.,Wesemann，Christian.,Weiss，Florian.,...&Spies，Benedikt C..(2022).Accuracy of additively manufactured zirconia four-unit fixed dental prostheses fabricated by stereolithography, digital light processing and material jetting compared with subtractive manufacturing.DENTAL MATERIALS,38(9),1459-1469.

Lüchtenborg，Jörg,et al."Accuracy of additively manufactured zirconia four-unit fixed dental prostheses fabricated by stereolithography, digital light processing and material jetting compared with subtractive manufacturing".DENTAL MATERIALS 38.9(2022):1459-1469.