Design and manufacture of polylacticacid (PLA) filament storage for 3-dimensional printing with composite material.

Suharjanto, Gatot; Adi, J P

doi:10.1088/1755-1315/998/1/012028

Cited by 4 publications

(2 citation statements)

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“…Suharjanto et al reported that filament storage using medium-density boards prevents and reduces air absorption of PLA filament and filament life, leading to the maintenance of the printing system. Note that the accuracy after modeling varies depending on the storage method [ 75 ].…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid

et al. 2023

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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 (p < 0.05). No significant difference was observed at M. This study demonstrates that PLA can be recycled only once owing to accuracy limitations.

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Section: Discussionmentioning

confidence: 99%

Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid

et al. 2023

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“… 17 – 19 In terms of radiation attenuation, PLA is a suitable material due to its high atomic number and density, which makes it an effective radiation dose modulator. 20 – 22 However, it is important to note that PLA is not as flexible as TPU, so it may not be suitable for all applications. Another material option is acrylonitrile-butadiene-styrene (ABS), which has a density similar to that of PLA but is more flexible, making it suitable for certain applications.…”

Section: Methodsmentioning

confidence: 99%

Implementation of 3D Printing and Modeling Technologies for the Fabrication of Dose Boluses for External Radiotherapy at the CLCC of Sétif, Algeria

Kharfi,

Benkahila,

Boulkhessaim

et al. 2024

Technol Cancer Res Treat

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Objective: In external radiotherapy, dose boluses and compensators are used for treatment of irregular facial topography surfaces. In such cases, skewed isodose curves need to be addressed using a bolus that gives the deep dose distribution a shape adapted to the anatomical structures to be protected or irradiated. The combination of 3D modeling and printing technologies is a promising alternative to the conventional inaccurate and uncomfortable bolus fabrication technique. In this work, the proposed technologies will be used in the design and fabrication of high-performance and high-accuracy boluses that respond to the main constraints on metrology, adhesion to the patient's surface, comfort, and dose delivery. Methods: As a first phase in the implementation of the proposed solution, 3D printing materials, to be used in the fabrication of radiotherapy boluses, were selected and characterized to check how they respond to the required criteria on functionality, safety, and quality. Results: The obtained results show that among the studied materials, thermoplastic polyurethane (TPU) was found to be slightly more suitable than polylactic acid (PLA) for the fabrication of 3D printing boluses but for some kinds of treatments, PLA may be preferred despite its relative rigidity. Conclusion: In this work, procedures for dose bolus fabrication were proposed, and necessary data were obtained for some available 3D printing materials (TPU and PLA) that can be used for targeted applications. This achievement is a major step toward the final implementation of 3D modeling and printing technologies for the efficient fabrication of radiotherapy dose boluses.

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