Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid
Based on the hypothesis that the fabrication of dental models using fused deposition modeling and poly-lactic acid (PLA), followed by recycling and reusing, would reduce industrial waste, we aimed to compare the accuracies of virgin and recycled PLA models. The PLA models were recycled using a crush...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/7/2620 |
| _version_ | 1797607580567076864 |
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| author | Koudai Nagata Keitaro Inaba Katsuhiko Kimoto Hiromasa Kawana |
| author_facet | Koudai Nagata Keitaro Inaba Katsuhiko Kimoto Hiromasa Kawana |
| author_sort | Koudai Nagata |
| collection | DOAJ |
| description | Based on the hypothesis that the fabrication of dental models using fused deposition modeling and poly-lactic acid (PLA), followed by recycling and reusing, would reduce industrial waste, we aimed to compare the accuracies of virgin and recycled PLA models. The PLA models were recycled using a crusher and a filament-manufacturing machine. Virgin PLA was labeled R, and the first, second, and third recycles were labeled R1, R2, and R3, respectively. To determine the accuracies of the virgin and reused PLA models, identical provisional crowns were fitted, and marginal fits were obtained using micro-computed tomography. A marginal fit of 120 µm was deemed acceptable based on previous literature. The mesial, distal, buccal, and palatal centers were set at M, D, B, and P, respectively. The mean value of each measurement point was considered as the result. When comparing the accuracies of R and R1, R2, and R3, significant differences were noted between R and R3 at B, R and R2, R3 at P, and R and R3 at D (<i>p</i> < 0.05). No significant difference was observed at M. This study demonstrates that PLA can be recycled only once owing to accuracy limitations. |
| first_indexed | 2024-03-11T05:31:56Z |
| format | Article |
| id | doaj.art-893309c771f34c4d92c71de90c6e23f1 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T05:31:56Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-893309c771f34c4d92c71de90c6e23f12023-11-17T17:02:38ZengMDPI AGMaterials1996-19442023-03-01167262010.3390/ma16072620Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic AcidKoudai Nagata0Keitaro Inaba1Katsuhiko Kimoto2Hiromasa Kawana3Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, JapanDepartment of Oral Microbiology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, JapanDepartment of Fixed Prosthodontics, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, JapanDepartment of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, JapanBased on the hypothesis that the fabrication of dental models using fused deposition modeling and poly-lactic acid (PLA), followed by recycling and reusing, would reduce industrial waste, we aimed to compare the accuracies of virgin and recycled PLA models. The PLA models were recycled using a crusher and a filament-manufacturing machine. Virgin PLA was labeled R, and the first, second, and third recycles were labeled R1, R2, and R3, respectively. To determine the accuracies of the virgin and reused PLA models, identical provisional crowns were fitted, and marginal fits were obtained using micro-computed tomography. A marginal fit of 120 µm was deemed acceptable based on previous literature. The mesial, distal, buccal, and palatal centers were set at M, D, B, and P, respectively. The mean value of each measurement point was considered as the result. When comparing the accuracies of R and R1, R2, and R3, significant differences were noted between R and R3 at B, R and R2, R3 at P, and R and R3 at D (<i>p</i> < 0.05). No significant difference was observed at M. This study demonstrates that PLA can be recycled only once owing to accuracy limitations.https://www.mdpi.com/1996-1944/16/7/2620material extrusion3D printerpoly-lactic acidsustainable development goalsdental modeldigital dentistry |
| spellingShingle | Koudai Nagata Keitaro Inaba Katsuhiko Kimoto Hiromasa Kawana Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid Materials material extrusion 3D printer poly-lactic acid sustainable development goals dental model digital dentistry |
| title | Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid |
| title_full | Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid |
| title_fullStr | Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid |
| title_full_unstemmed | Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid |
| title_short | Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid |
| title_sort | accuracy of dental models fabricated using recycled poly lactic acid |
| topic | material extrusion 3D printer poly-lactic acid sustainable development goals dental model digital dentistry |
| url | https://www.mdpi.com/1996-1944/16/7/2620 |
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