Evaluation of the mechanical properties and degree of conversion of 3D printed splint material = Evaluación de las propiedades mecánicas y grado de conversión de material de férula impreso 3D
Publicado por
The journal of the mechanical behavior of biomedical materials
Descripción
Abstract:
Objective: To evaluate the effect of post-curing method, printing layer thickness, and water storage on the me chanical properties and degree of conversion of a light-curing methacrylate based resin material (IMPRIMO® LC Splint), used for the fabrication of 3D printed occlusal splints and surgical guides.
Methods: 96 bar-shaped specimens were 3D printed (Asiga MAX), half of them with a layer thickness of 100 ? m (Group A), and half with 50 ? m (Group B). Each group was divided in three subgroups based on the post-curing method used: post-curing with light emitting diode (LED) and nitrogen gas; post-curing with only LED; and non- post-curing. Half of the specimens from each subgroup were water-stored for 30 days while the other half was dry-stored (n = 8). Flexural strength and flexural modulus were evaluated. Additional specimens were prepared and divided in the same way for surface hardness (n = 96), fracture toughness, and work of fracture (n = 96). Five specimens were selected from each subgroup for evaluating the degree of conversion (DC). Data were collected and statistically analyzed with 1-way, 2-way ANOVA, and Tukey post-hoc analysis (? = 0.05).
Results: The 2-way ANOVA showed that the post-curing method and water storage significantly affected the investigated mechanical properties (P < 0.001). The 1-way ANOVA revealed a statistically significant difference among the tested groups on the investigated properties (P < 0.001). After water storage, the 100 ? m subgroup post-cured with only LED showed higher flexural strength (51 ± 9) than the 50 ? m and 100 ? m subgroups that were post-cured with LED in addition to nitrogen gas atmosphere (38 ± 5, 30 ± 3) (p < 0.05). The 50 ? m subgroup post-cured with only LED showed the highest significant flexural modulus values (1.7 ± 0.08) (p < 0.05). However, the 50 ? m subgroup post-cured with LED plus nitrogen showed significantly higher surface hardness values (p < 0.05) among the investigated groups. The non-post-cured subgroups showed the lowest values, which were significantly different from the other subgroups (p < 0.05).
Conclusion: The post-curing method, water storage, and printing layer thickness play a role in the mechanical properties of the investigated 3D Printed occlusal splints material. The combination of heat and light within the post-curing unit can enhance the mechanical properties and degree of conversion of 3D printed occlusal splints. Flexural strength and surface hardness can increase when decreasing printing layer thickness.
Resumen:
Objetivo: Evaluar el efecto del método de poscurado, el espesor de la capa de impresión y el almacenamiento de agua en el tiempo. Propiedades mecánicas y grado de conversión de un material de resina fotopolimerizable a base de metacrilato (IMPRIMO® LC Splint), utilizado para la fabricación de férulas oclusales y guías quirúrgicas impresas en 3D.
Métodos: Se imprimieron en 3D (Asiga MAX) 96 muestras en forma de barra, la mitad de ellas con un espesor de capa de 100 ? m. (Grupo A), y la mitad con 50 ? m (Grupo B). Cada grupo se dividió en tres subgrupos según el poscurado. método utilizado: postcurado con diodo emisor de luz (LED) y gas nitrógeno; postcurado solo con LED; y no- después de curado. La mitad de los especímenes de cada subgrupo se almacenaron en agua durante 30 días mientras que la otra mitad se almacenó en agua. almacenado en seco (n = 8). Se evaluaron la resistencia a la flexión y el módulo de flexión. Se prepararon muestras adicionales. y dividido de la misma manera para dureza de la superficie (n = 96), tenacidad a la fractura y trabajo de fractura (n = 96). Se seleccionaron cinco ejemplares de cada subgrupo para evaluar el grado de conversión (DC). Los datos fueron recopilados y analizados estadísticamente con ANOVA de 1 vía, 2 vías y análisis posthoc de Tukey (? = 0,05).
Citación recomendada (normas APA)
Leila; Gibreel Perea Mosquera, "Evaluation of the mechanical properties and degree of conversion of 3D printed splint material = Evaluación de las propiedades mecánicas y grado de conversión de material de férula impreso 3D", Colombia:The journal of the mechanical behavior of biomedical materials, 2021. Consultado en línea en la Biblioteca Digital de Bogotá (https://www.bibliotecadigitaldebogota.gov.co/resources/3711945/), el día 2025-05-06.
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Evaluation of the mechanical properties and degree of conversion of 3D printed splint material = Evaluación de las propiedades mecánicas y grado de conversión de material de férula impreso 3D
