Surface roughness and translucency of glazed lithium disilicate (IPS E.Max) vs. glazed and polished "zirconia-reinforced lithium silicate" (Celtra duo) (in vitro study)

Siam, Ramy; Elnaggar, Gihan Abd Elhady; Hassanien, Eman

doi:10.22271/oral.2021.v7.i1d.1141

Cited by 2 publications

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“…In this study, we obtained similar surface roughness values in all samples (CS = 0.28 ± 0.09, CD = 0.26 ± 0.07, CDC = 0.17 ± 0.04). Siam et al [25] conducted a study on zirconium-reinforced lithium silicate specimens (Celtra Duo) which were divided into two subgroups, glazed and polished. No statistically signi cant difference was found between the two surfaces (p = 0.8204) when the surface roughness of the specimens was measured using an optical pro lometer.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Whitening Toothpastes on the Surface Properties and Color Stability of Different Ceramic Materials

Geduk,

Sağlam

2024

Preprint

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Objectives This study aimed to evaluate the effect of whitening toothpastes on the surface roughness and colour change of CAD-CAM materials. Materials and methods A total of 96 samples (2x10x12 mm3) were prepared from Cerasmart (CS) and Celtra Duo blocks. Celtra Duo samples were divided into two groups. One group was fired with glaze paste (CDC) and the other was not treated (CD). All groups were then divided into 4 subgroups (n = 8). The groups were brushed with conventional (Colgate™ Max Fresh), silica (Opalescence™), charcoal (Curaprox™ Black in White) and blue covarin (Signal™ White Now) toothpastes for 30,000 brushing cycles. The initial and final surface roughness values were measured with contact profilometer and a dental spectrophotometer used for obtaining colour values. One sample from each brushed group analyzed using a surface electron microscope. Data analyzed with Kruskal-Wallis and Mann-Whitney tests. (p = 0.05) Results The surface roughness of CS samples brushed with Opalescence™ and Curaprox™ was significantly higher than CD and CDC. Surface roughness change values of CS samples brushed with Curaprox™ were significantly higher than the CD and CDC. Curaprox™ brushed samples showed significant difference in colour change values for all materials. Conclusions Brushing increases the surface roughness of CAD-CAM ceramic materials. The roughness of resin-based materials is higher than zirconia-reinforced lithium silicates. Silica-contained toothpastes may cause discoloration of nanoceramic and zirconia reinforced glass ceramic restorations. Clinical relevance It should be clinically considered that whitening toothpastes may cause roughness in ceramic materials and change the desired color.

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Section: Discussionmentioning

confidence: 99%

The Effect of Whitening Toothpastes on the Surface Properties and Color Stability of Different Ceramic Materials

Geduk,

Sağlam

2024

Preprint

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“…This glass-ceramics materials, which can be obtained by the controlled precipitation of crystals (to overcome the glass deficiencies) [ 20 , 21 ] and crystallization of glasses (to ensure good mechanical properties) [ 20 , 22 ] in the glassy amorphous phase, can be used either as veneers as well as full anatomic restorations according to ISO 6872. The glass ceramics combine the best of both: aesthetics and strength and it is reported to be described as a biocompatible material [ 23 , 24 ]. This modern glass ceramic material is loaded with zirconia, combining the material properties of zirconia and glass ceramic in a single product [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Optical properties of zirconia-reinforced lithium silicate veneers obtained with CAD/CAM milling and hot-pressing techniques: a comparative in vitro study

Pîrvulescu,

Faur,

Ille

et al. 2023

Medicine and Pharmacy Reports

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Background and aims. Dental veneers have become increasingly required among patients, but little is known about the optical properties of veneers obtained from the same ceramic material through different processing techniques. Methods. In this study we compared the translucency and the opalescence parameters of zirconia-reinforced lithium silicate (ZLS) veneers restorations fabricated through CAD/CAM milling and hot-pressing techniques on the upper central incisor. Eighty specimens divided into 8 groups (n=10) were sectioned (Celtra Duo) and heat pressed (Celtra Press) to obtain 0.8 mm thickness. The optical parameters were calculated from the color difference against different backgrounds. Analysis of variance, one way ANOVA and post-hoc multiple comparison tests were used to evaluate and compare the optical properties of the same material, with a significance level of p < 0.05. Results. The processing method had significant effect on optical parameters. Celtra Duo HT proved to be the material with the highest transparency degree. The hot-pressing technique led to higher opacity than CAD/CAM milling technique. Conclusions. For a bio-mimetic aesthetic prosthetic restoration, the ceramic materials must have the same translucency and opacity as the real tooth. The results of this study revealed that high translucency ZLS obtained through hot pressing technique was the material of choice, as it fulfilled these requirements.

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Surface roughness and translucency of glazed lithium disilicate (IPS E.Max) vs. glazed and polished "zirconia-reinforced lithium silicate" (Celtra duo) (in vitro study)

Cited by 2 publications

References 0 publications

The Effect of Whitening Toothpastes on the Surface Properties and Color Stability of Different Ceramic Materials

The Effect of Whitening Toothpastes on the Surface Properties and Color Stability of Different Ceramic Materials

Optical properties of zirconia-reinforced lithium silicate veneers obtained with CAD/CAM milling and hot-pressing techniques: a comparative in vitro study

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