The microscopic appearance and effect of toothbrushing on extrinsically stained metal-ceramic restorations

Bativala, Firdaus; Weiner, Saul; Berendsen, Peter B.; Vincent, G; Ianzano, J A; Harris, Wayne T.

doi:10.1016/0022-3913(87)90115-6

Cited by 18 publications

(13 citation statements)

References 4 publications

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“…Some of these previous research report a more pronounced wear of the antagonist tooth when tested against a fluorapatite veneering ceramic for extrinsic characterization (DC) compared to their control group. Since the nano‐hardness values found on the characterized and control groups were statistically similar, this wear could be related to the roughness of the samples …”

Section: Discussionmentioning

confidence: 83%

Effect of staining and repeated firing on the surface and optical properties of lithium disilicate

Miranda

Barcellos

MartinelliLobo

et al. 2019

J Esthet Restor Dent

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Objective: Evaluate the effect of staining and repeated firings on color, translucency and surface proprieties of CAD/CAM lithium disilicate (LD).Material and Methods: One hundred eighty LD discs were made (ISO 6872) and distributed in different groups (n = 20): control (CO)-no treatment; single-step characterization (SC)-crystallization and staining fired together; and double step characterization (DC)-crystallization and then staining. The samples were submitted to two, four, or six firings, resulting in nine groups: COII, COIV, COVI, SCII, SCIV, SCVI, DCII, DCIV, and DCVI. The color and translucency were measured by a reflectance spectrophotometer. Surface roughness (Ra) and Vickers nano-hardness were also measured. ANOVA and Tukey statistical tests were used (α = .05). Results:Only CO and DC demonstrated significant color alterations (ΔE 00 > 1.8). SC and DC did not show changes in translucency by the number of firings (P > .05); however, for CO (P = .02) these values increased. Nano-hardness was similar in all groups (P > .05). Ra values indicated differences due to the type of characterization (SC presented the highest values) and number of firings (CO and DC groups) (P < .01).Conclusion: SC promoted color, translucency, and roughness stability after repeated firings.Clinical Significance: The single characterization technic in CAD/CAM lithium disilicate presents good color, translucency, and hardness stability, which promote predictable results to monolithic restoration. K E Y W O R D Scolor, lithium disilicate, repeated firing, roughness, translucency

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Section: Discussionmentioning

confidence: 83%

Effect of staining and repeated firing on the surface and optical properties of lithium disilicate

Miranda

Barcellos

MartinelliLobo

et al. 2019

J Esthet Restor Dent

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“…Aker et al 7 demonstrated that the use of a normal toothbrush with a common dentifrice could wear away color corrective porcelain stains applied to the surface of feldspathic porcelain restorations in a period of 10 to 12 years unless a protective layer of glaze was applied over the stain. Conversely, Bativala et al 5 found that the extrinsic stain layer on feldspathic porcelain restorations was resistant to significant loss from the use of a fluoride dentifrice applied with a soft multitufted toothbrush for at least 8.5 years of simulated brushing. They also found that some of the stain layer on the The pressable ceramic restorations are fabricated by a combination of the lost-wax and heat-pressing methods, providing excellent marginal fit and esthetic results.…”

mentioning

confidence: 99%

Effect of toothbrushing on shade and surface roughness of extrinsically stained pressable ceramics

Garza

Thompson

Cho

et al. 2016

The Journal of Prosthetic Dentistry

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“…However, monolithic restorations without further processing do not meet high aesthetic demands, and therefore, are more often used in the posterior region [2,3]. The staining of ceramic restorations is a common procedure used to mimic the nuances and colors of natural teeth [4][5][6]. To improve the aesthetic limitations of glass-based and polycrystalline ceramics, stain firing was performed on this materials [5].…”

Section: Introductionmentioning

confidence: 99%

Toothbrushing Wear Resistance of Stained CAD/CAM Ceramics

et al. 2021

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Aim: To investigate the effect of toothbrushing on different stained Computerd Aided Design/Computer Aided Manufacturing CAD/CAM ceramics. Materials and Methods: Fifty specimens (high translucency zirconia, YZHT; zirconia-reinforced lithium silicate, ZLS; feldspathic, FDL; hybrid ceramic, HC; all from Vita Zahnfabrik) were divided into five groups according to their staining technique. ZLS allowed the composition of two groups: ZLS1 with crystallization and staining together; ZLS2, with the stain firing after the crystallization. YZHT received a stain firing after the sintering process, and FDL received stain firing directly. The HC was stained with acrylic staining, and was light-cured on its surface. The specimens were brushed in total for 150,000 cycles at 2.45 N with 180 strokes/min. Surface measurements to obtain Rz were performed after 50,000, 100,000 and 150,000 cycles, with five evaluation lines (5 mm) per specimen orthogonal to the brushing direction, covering brushed and unbrushed areas. The wear was analyzed using two-way ANOVA and Tukey tests (α = 5%). Scanning electron microscopy (SEM) was performed to access the surface profile. The wear was affected by material (p < 0.001) and time (p = 0.139). Superior wear (µm) was observed for HC (6.6 ± 4.4; 6.8 ± 4.0; 9.2 ± 3.5) compared to ZLS2 (1.0 ± 0.3; 1.2 ± 2.2; 1.3 ± 0.3), YZHT (1.0 ± 0.1; 1.2 ± 0.3; 1.2 ± 0.3), ZLS1 (0.9 ± 0.1; 1.1 ± 0.5; 1.2 ± 0.3) and FDL (0.9 ± 0.1; 0.9 ± 0.1; 1.0 ± 0.2) after 5, 10 and 15 years of simulation, respectively. SEM showed different wear patters for HC with the removal of the glaze layer. HC showed a higher staining wear rate compared to the glass-based and polycrystalline ceramics after 15 years. The extrinsic characterization of feldspathic ceramic showed its superior longevity compared to the evaluated high-translucency zirconia, zirconia-reinforced lithium silicate, and hybrid ceramic.

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The microscopic appearance and effect of toothbrushing on extrinsically stained metal-ceramic restorations

Cited by 18 publications

References 4 publications

Effect of staining and repeated firing on the surface and optical properties of lithium disilicate

Effect of staining and repeated firing on the surface and optical properties of lithium disilicate

Effect of toothbrushing on shade and surface roughness of extrinsically stained pressable ceramics

Toothbrushing Wear Resistance of Stained CAD/CAM Ceramics

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