| Item type: | Article | ||||
|---|---|---|---|---|---|
| Journal or Publication Title: | Dental Materials | ||||
| Publisher: | Elsevier | ||||
| Place of Publication: | OXFORD | ||||
| Volume: | 37 | ||||
| Number of Issue or Book Chapter: | 10 | ||||
| Page Range: | pp. 1584-1591 | ||||
| Date: | 2021 | ||||
| Institutions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik | ||||
| Identification Number: |
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| Keywords: | IN-VITRO WEAR; UNDERSTANDING DENTAL CAD/CAM; ENGINEERING VIEWPOINT. PART; OCCLUSAL SPLINT THERAPY; BIS-GMA; TEMPOROMANDIBULAR DISORDERS; SURFACE-ROUGHNESS; MILLING MACHINES; COLOR STABILITY; WATER SORPTION; CAD /CAM; Rapid prototyping; 3D printing; UDMA; UMA; Occlusal splints; DLP; Resin | ||||
| Dewey Decimal Classification: | 600 Technology > 610 Medical sciences Medicine | ||||
| Status: | Published | ||||
| Refereed: | Yes, this version has been refereed | ||||
| Created at the University of Regensburg: | Yes | ||||
| Item ID: | 55771 |
Web of ScienceAbstract
Objective. This study is focused on testing experimental rapid prototyping materials for occlusal splints made from Urethandimethacrylate (UDMA) and Urethanmethacrylate (UMA). Methods. Materials were mixed from UDMA and UMA in ratios of 1.0:0.0, 0.75:0.25, 0.5:0.5, 0.25:0.75 and 0.0:1.0. Specimens were printed using digital light processing (DLP). After post processing, the specimens underwent ...
Abstract
Objective. This study is focused on testing experimental rapid prototyping materials for occlusal splints made from Urethandimethacrylate (UDMA) and Urethanmethacrylate (UMA). Methods. Materials were mixed from UDMA and UMA in ratios of 1.0:0.0, 0.75:0.25, 0.5:0.5, 0.25:0.75 and 0.0:1.0. Specimens were printed using digital light processing (DLP). After post processing, the specimens underwent testing on flexural strength, modulus of elasticity, hardness, wear behavior, surface roughness, gloss and color stability. All tests were performed after 24 h (baseline) and 10 days of water storage (aging). Splints underwent cyclic pull-off and insertion testing, which was alongside simulated using finite element analysis. Results. The mechanical properties were significantly influenced by changes in the UDMA:UMA ratio. Statistical analysis revealed that increased amounts of UMA correlated with a decrease in flexural strength (92.0 to 30.7 MPa), modulus of elasticity (2.4 to 0.6 GPa), hardness (155.1 to 102.0 N/mm(2)) and wear resistance (-1394.9 to -1742.1 mu m). Materials with higher amounts of UMA were also more likely to be influenced by water storage. Specimens with 75% and 100% UMA content were partly not analyzable due to soft consistency. Optical properties showed only minor influence from UMA content and aging. Differences in surface roughness (3.9 to 2.4 mu m) and color stability were insignificant. Gloss was partly influenced by the UDMA:UMA ratio and water storage. Mean survival rates for cyclic pull-off and insertion testing ranged from 2537 to 23,857 cycles. A correlation between the amount of UMA and survival rates was observed. Significance. The addition of up to 25% UMA showed promising results, complying with clinical standards and delivering acceptable results in the cyclic pull-off and insertion test. Further investigation on increments between 0 and 25% UMA could help to find an optimum. (C) 2021 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.
Metadata last modified: 29 Feb 2024 12:12
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