Mechanical and Viscoelastic Properties of a Temperature-Responsive Photocurable Resin for 3D Printed Orthodontic Clear Aligners DOI Creative Commons
Jin-Young Choi, Hoon Kim, Seong-hun Kim

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: May 7, 2024

Abstract This study presents a novel technique for the direct 3D printing of TC-85, biocompatible material specifically designed orthodontic uses. method aims to overcome biomechanical constraints associated with conventional thermoforming process used in aligner fabrication. The investigation emphasizes analyzing TC-85's mechanical and viscoelastic properties, focusing on how temperature changes impact these characteristics their relevance clinical outcomes. Using Digital Light Processing (DLP) printer, photoreactive resin TC-85 is printed, extensive thermo-mechanical testing conducted, which includes evaluations tensile modulus, stress relaxation, creep behavior. Dynamic Mechanical Analysis (DMA) conducted at temperatures varying from 30 45°C assess material's adaptive response thermal fluctuations. distinguished by its unique include temperature-sensitive stiffness, relaxation capability, shape memory feature. results demonstrate that maintains an enhanced level residual force faster recovery strain through numerous cycles loading unloading. At 40°C, displays substantial reduction storage while maintaining consistent volumetric constancy. highlights potential treatments, providing adaptable properties enable exertion consistent, regulated forces teeth. Its resistance decay, stable volume raised temperatures, built-in enhance hygienic upkeep patient comfort, positioning as pioneering next generation clear aligners.

Language: Английский

Influence of Printing Orientation on Surface Roughness and Gloss of 3D Printed Resins for Orthodontic Devices DOI Open Access
Cecilia Goracci,

Carlo Bosoni,

Patrizia Marti

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 523 - 523

Published: Jan. 23, 2025

The study aims to assess the effect of printing orientation on surface roughness and gloss resins for 3D aligners. Squared specimens (14 × 14 4 mm) were printed using Dental LT Clear (Formlabs, Somerville, MA, USA; LT) or Tera Harz TC-85 DAC (Graphy, Seoul, Republic Korea; TC) with different orientations: 0° (horizontal), 90° (vertical), as per manufacturer’s recommendation (40° LT, 60° TC). A profilometer was used measure (Ra) in µm, while recorded units (GU) a glossmeter. collected data statistically analyzed. Material type did not significantly influence roughness, print an influential factor, recommended by manufacturer yielding roughest specimens. Vertical resulted higher than horizontal. significant factor gloss, TC exhibiting LT. Print direction influenced vertical resulting highest gloss. finding prints can be explained presence greater number layers. superior exhibited regardless angulation could related effective cleaning uncured resin centrifugation high degree monomer conversion nitrogen atmosphere.

Language: Английский

Citations

0
Effect of oxygen inhibition on 3D printed dental resins: A systematic review DOI

Victor de Melo-Soares,

Andréa Cândido dos Reis,

Mariana Lima da Costa Valente

et al.

Journal of Prosthetic Dentistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Mechanical and Viscoelastic Properties of a Temperature-Responsive Photocurable Resin for 3D Printed Orthodontic Clear Aligners DOI Creative Commons
Jin-Young Choi, Hoon Kim, Seong-hun Kim

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: May 7, 2024

Abstract This study presents a novel technique for the direct 3D printing of TC-85, biocompatible material specifically designed orthodontic uses. method aims to overcome biomechanical constraints associated with conventional thermoforming process used in aligner fabrication. The investigation emphasizes analyzing TC-85's mechanical and viscoelastic properties, focusing on how temperature changes impact these characteristics their relevance clinical outcomes. Using Digital Light Processing (DLP) printer, photoreactive resin TC-85 is printed, extensive thermo-mechanical testing conducted, which includes evaluations tensile modulus, stress relaxation, creep behavior. Dynamic Mechanical Analysis (DMA) conducted at temperatures varying from 30 45°C assess material's adaptive response thermal fluctuations. distinguished by its unique include temperature-sensitive stiffness, relaxation capability, shape memory feature. results demonstrate that maintains an enhanced level residual force faster recovery strain through numerous cycles loading unloading. At 40°C, displays substantial reduction storage while maintaining consistent volumetric constancy. highlights potential treatments, providing adaptable properties enable exertion consistent, regulated forces teeth. Its resistance decay, stable volume raised temperatures, built-in enhance hygienic upkeep patient comfort, positioning as pioneering next generation clear aligners.

Language: Английский

Citations

1