Color stability, surface roughness and flexural strength of additively manufactured and milled interim restorative materials after aging

Türksayar, Almira Ada Diken; Baytur, Simge

doi:10.1007/s10266-022-00778-6

Cited by 7 publications

(9 citation statements)

References 46 publications

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“…Although Vita Easyshade V is designed for in-vivo color measurements, it has also been used for in-vitro measurements in many studies and its accuracy and reliability have been demonstrated. 8,13,15,22,23 CIELAB color difference formula (ΔE) has been used to evaluate color changes in dental restorative materials. However, in the last decade, researchers have been reporting color changes using the CIEDE2000 color change formula (ΔE 00 ), which has been proven to be more accurate in the visual perception of color change.…”

Section: Discussionmentioning

confidence: 99%

“…A single researcher recorded the color coordinates of each sample on a black background with a 2-degree observation angle in the center of samples under D65-led illumination. 13 Measurements were repeated three times for each specimen. The mean of three measurements was recorded as L, a, and b coordinates of the sample.…”

Section: Methodsmentioning

confidence: 99%

“…[7][8][9][10][11] The 3D printer technology, low polymerization rate, and water sorption of 3D-printable resins can explain higher color stainability. 10,12 Previous studies 4,10,13 have reported different results regarding the effect of 3D-printing technology on the discoloration of 3D-printable resins. While a previous study stated that 3D-printing technology did not affect the discoloration of 3D-printable resins when the samples were subjected to 5000 thermal cycles in distilled water, other previous studies determined the effect of 3D-printing technology on the discoloration of the 3D-printable resins when the samples immersed for 30 days in distilled water.…”

Section: Introductionmentioning

confidence: 99%

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Do Polishing Methods and Colorant Beverages Affect the Color Stainability of 3D-printed Permanent Restorations?

Ezmek,

Aydin

2023

Journal of Advanced Oral Research

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Aim: This in vitro study evaluated the effect of polishing methods on the color stainability of 3D-printed permanent restorations while immersed in colorant beverages (distilled water, tea, coffee, and red wine) for 30 days. Materials and Methods: A total of 120-disc-shaped samples (10 mm × 1.5 mm) were fabricated using a stereolithography printer (Formlabs 3B, Formlabs, Massachusetts) with a three-dimensional (3D)-printable permanent resin (Permanent Crown, Formlabs, Massachusetts). The samples were polished with mechanical polishing, Optiglaze (GC Dental Products Corp, Aichi, Japan), or Vita Akzent LC (VITA Zahnfabrik, Bad Säckingen, Germany) ( n = 40). Initial color measurements were performed using a spectrophotometer (VITA Easyshade V; Vita Zahnfabrik). Then the samples were divided into four different subgroups depending on beverages immersed in distilled water, coffee, tea, and red wine ( n = 10). After immersion in beverages for 30 days, color measurements were repeated. Color changes were calculated using the CIEDE2000 color change (Δ E00) formula. Δ E00 was evaluated according to 50:50% color perceptibility (PT00 = 0.81) and acceptability (AT00 = 1.81) thresholds. A two-way analysis of variance (ANOVA), Tukey HSD test with Bonferroni adjustment, and paired-sample t-tests were used for statistical evaluation. Results: The highest ΔE00 was noted in mechanical polishing groups ( p < .001). Red wine caused the most significant discoloration in the mechanical polishing group ( p < .05). ΔE00 of mechanical polish groups showed a significantly higher color change than the perceptibility and acceptability thresholds ( p < .001). Optiglaze can reduce 3D-printed permanent restoration discoloration caused by all beverages, Vita Akzent LC can reduce discoloration caused by tea and red wine. Conclusion: Glaze materials can reduce the restoration discoloration caused by colorant beverages.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Do Polishing Methods and Colorant Beverages Affect the Color Stainability of 3D-printed Permanent Restorations?

Ezmek,

Aydin

2023

Journal of Advanced Oral Research

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“…The discoloration agents were selected based on previous studies that studied the color stability of prostheses made using computer-aided design and computer-aided manufacturing (CAD/CAM), and the crown specimens of each group were divided into four subgroups according to the discoloration agents that they were added to, as follows: distilled water, coffee, wine, and curry ( Figure 2 ) [ 3 , 4 , 5 , 7 , 8 , 9 ]. Coffee was made using Nescafe Crema Americano (Nestle; Vevey, Switzerland) according to the manufacturer’s instructions (3 g of pre-ground powder mixed with 300 mL of distilled water).…”

Section: Methodsmentioning

confidence: 99%

“…Most 3D printers use resin compounds to form specific configurations that meet the purpose of restoration [ 2 ]. Although their ability to be shaped into proper configurations and their integrity against functional and occlusal force are suitable for clinical use in dental fields, resin compounds are susceptible to discoloration due to their composition and chemical structures [ 3 , 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

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

Lim,

Kim,

Song

et al. 2024

Dentistry Journal

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

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The Effects of Process Parameters on Tensile Characteristics and Printing Time for Masked Stereolithography Components, Analyzed Using the Response Surface Method

Temiz

2023

J. of Materi Eng and Perform

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Color stability, surface roughness and flexural strength of additively manufactured and milled interim restorative materials after aging

Cited by 7 publications

References 46 publications

Do Polishing Methods and Colorant Beverages Affect the Color Stainability of 3D-printed Permanent Restorations?

Do Polishing Methods and Colorant Beverages Affect the Color Stainability of 3D-printed Permanent Restorations?

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

The Effects of Process Parameters on Tensile Characteristics and Printing Time for Masked Stereolithography Components, Analyzed Using the Response Surface Method

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