Accuracy of polymeric dental bridges manufactured by stereolythography

• Autorzy: Dikova T , Dzhendov D. , Katreva I. , Pavlova D.

Identyfikatory

DOI

10.5604/18972764.1226313

• Języki publikacji: EN

Abstrakty

EN

Purpose: Purpose of this paper is to investigate the accuracy of dental bridges produced via digital light projection stereolithography process. Design/methodology/approach: 3D printer Rapidshape D30 was used for manufacturing of two groups of samples – temporary four-part bridges and cast patterns for permanent bridges. The temporary bridges were made of NextDent C+B polymer, while the cast patterns - of NextDent Cast. The samples were manufactured with different layer’s thickness (0.035 mm and 0.050 mm). The geometrical and adjusting accuracy were investigated by measuring of the samples’ dimensions and silicone probe, while the surface roughness was studied out by profile meter and optical microscopy. Findings: It was established that the dimensions of the temporary bridges and the cast patterns, printed with layer thickness 50 µm, are larger than that of the virtual 3D model with 0.1-0.3 mm. Decreasing the layer thickness to 35 µm leads to 0.29%-1.10% smaller sizes of dental bridges and cast patterns in comparison to that of the virtual 3D model. The average roughness deviation Ra of the 3D printed temporary bridges and cast patterns is larger than that of the initial model. As the surface roughness depends on the layer’s thickness, the samples with 0.035 mm layer characterize with lower Ra values. The silicone probe shows that the temporary bridges as well as the cast patterns need additional adjusting in the dental office or corrections during design of the virtual 3D model and 3D printing process in the dental laboratory. Practical implications: The stereolithography as part of CAD/CAM manufacturing process characterizes with high accuracy as a whole. But present study reveals that additional adjusting or preliminary corrections of the design of 3D printing process are needed for dental constructions produced by SLA. Originality/value: The geometrical and fitting accuracy as well as the surface roughness of dental bridges, produced by stereolithography were evaluated. The data, shown in the present study, will help dentists and dental technicians to precise the manufacturing regimes for production of dental constructions with high accuracy.

Słowa kluczowe

EN

biomaterials; additive technologies; stereolithography; dental bridge

PL

biomateriały; technologie przyrostowe; stereolitografia; most protetyczny

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2016
• Tom: Vol. 78, nr 1
• Strony: 29--36
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Dikova T

• Faculty of Dental Medicine, Medical University of Varna, 55 Marin Drinov Str, 9002 Varna, Bulgaria

autor

Dzhendov D.

• Faculty of Dental Medicine, Medical University of Varna, 55 Marin Drinov Str, 9002 Varna, Bulgaria

autor

Katreva I.

• Faculty of Dental Medicine, Medical University of Varna, 55 Marin Drinov Str, 9002 Varna, Bulgaria

autor

Pavlova D.

• Medical College, Medical University of Varna, 55 Marin Drinov Str, 9002 Varna, Bulgaria

Bibliografia

• [1] C.W. Hull, Apparatus for Production of ThreeDimensional Objects by Stereolithography, US Patent 4.575.330 (March 11, 1986).
• [2] R. Van Noort, The future of dental devices is digital, Dental Materials 28 (2012) 3-12.
• [3] K. Torabi, E. Farjood, Sh. Hamedani, Rapid Prototyping Technologies and their Applications in Prosthodontics, Journal of Dentistry, Shiraz University of Medical Sciences 16/1 (2015) 1-9.
• [4] R. Minev, Ek. Minev, Technologies for Rapid Prototyping (RP) - Basic Concepts, Quality Issues and Modern Trends, Scripta Scientifica Medicinae Dentalis 2/1 (2016) 29-39.
• [5] Kr. Bliznakova, The use of 3D printing in manufacturing anthropomorphic phantoms for biomedical applications, Scripta Scientifica Medicinae Dentalis 2/1 (2016) 40-48.
• [6] T. Dikova, D. Dzhendov, I. Katreva, D. Pavlova, M. Simov, S. Angelova, M. Abadzhiev, T. Tonchev, Possibilities of 3D printer Rapidshape D30 for Manufacturing of Cubic Samples, Scripta Scientifica Medicinae Dentalis 2/1 (2016) 9-15.
• [7] P. Malara, Z. Czech, W. Swiderski, Degree of conversion of dental composite materials in relation to different light-curing parameters, Journal of Achievements in Materials and Manufacturing Engineering 70/2 (2015) 60-69.
• [8] Y. Ishida, T. Miyasaka, Dimensional accuracy of dental casting patterns created by 3D printers, Dental Materials Journal 35/2 (2016) 250-256.
• [9] M. Braian, R. Jimbo, A. Wennerberg, Production tolerance of additive manufactured polymeric objects for clinical applications, Dental Materials 32/7 (2016) 853-861.
• [10] K.J. Anusavice, Philips’ Science of Dental Materials, Elsevier, 2003.
• [11] Ts. Dikova, Dental Materials Science, Lectures and laboratory classes notes, Part II, MU-Varna, Varna, 2014.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)