Effect of 3D printing system and post-curing atmosphere on micro- and nano-wear of additive-manufactured occlusal splint materials

Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials, Год журнала: 2023, Номер 142, С. 105799 - 105799

Опубликована: Март 24, 2023

Although additive manufacturing has been widely applied for occlusal splint (OS) fabrication, it is still unclear whether 3D printing system and post-curing atmosphere would play a role in the wear resistance of additive-manufactured OS. Therefore, aim this study was to evaluate effect (liquid crystal display (LCD) digital light processing (DLP)) (air nitrogen gas (N2)) on hard soft OS materials OSs (KeySplint® Hard Soft). The evaluated properties were microwear (by two-body test) nano-wear resistances nanoindentation as well flexural strength modulus three-point bending test), surface microhardness Vickers hardness nanoscale elastic (reduced modulus) nano test). For material, microhardness, resistance, reduced modulus, hardness, significantly affected by (p < 0.05), while all except 0.05). Meanwhile, both specimens DLP printer tended show higher material groups lower when compared those LCD printer. at N2 enhanced 0.05) 0.01), regardless 0.01). It can be concluded that affect micro- tested additively manufactured materials. In addition, also optical providing depends type, using protection during enhances

Язык: Английский

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Influence of Post-Curing in Nitrogen-Saturated Condition on the Degree of Conversion and Color Stability of 3D-Printed Resin Crowns

Dentistry Journal, Год журнала: 2024, Номер 12(3), С. 68 - 68

Опубликована: Март 6, 2024

Post-curing is the process of applying extra light to complete polymerization 3D printing. The mechanical properties light-cured three-dimensional (3D) printed resin can be improved by decreasing oxygen concentrations during post-curing, and nitrogen-saturated post-curing has been applied for this purpose. This study aimed evaluate compare color stability 3D-printed crowns that were post-cured in both normal air conditions. Crowns fabricated with a printer (control group; air) or conditions (experimental nitrogen). specimens each group subdivided into four subgroups, exposed different discoloration agents: distilled water, coffee, wine, curry. Post-immersion changes measured using digital spectrophotometer analyzed repeated-measures ANOVA. Fourier transform infrared (FT-IR) spectroscopy evaluated degree conversion over immersion times Upon comparing effects conditions, significant difference between control experimental groups terms time wine curry subgroups was found. FT-IR analysis showed nitrogen from 10 300 s. These findings suggest potentially enhance rate crowns, thereby improving their stability.

Язык: Английский

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Are the properties of 3D printed dental materials affected by nitrogen-rich postpolymerization? A systematic review and meta-analysis

Journal of Prosthetic Dentistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Efficacy of Nitrogen Saturated Post-curing on Color Stability of Three-dimensional Printed Resin Crowns

Опубликована: Янв. 5, 2024

Mechanical properties of three-dimensional (3D) printed resin can be improved by decreasing oxygen concentrations during post-curing, and nitrogen saturated post-curing has been applied for the purpose. This study aimed to evaluate compare color stability 3D crowns post-cured in normal air conditions. Crowns were fabricated with printer (control group; air) or condition (experimental nitrogen). The specimens each group subdivided into four subgroups, exposed different discoloration agents: distilled water, coffee, wine, curry. Post-immersion changes measured using a digital spectrophotometer analyzed through repeated measures ANOVA. Fourier Transform Infrared (FT-IR) spectroscopy evaluated degree conversion over immersion times both Comparing effects conditions, significant difference was found between control experimental groups time wine curry subgroups. In FT-IR analysis, there from 10 300 seconds. findings suggest that potentially enhances rate crowns, thereby improving their stability.

Язык: Английский

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Effect of ethylene oxide unit number in bis-EMA on the physical properties of additive-manufactured occlusal splint material

Journal of Prosthodontic Research, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

To investigate the effects of number ethylene oxide units in bis-EMA on physical properties additively manufactured occlusal splints.

Язык: Английский

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