Shade Stability of Polymer-Infiltrated and Resin Nano Ceramics

Schürmann, M; Olms, Constanze

doi:10.2174/1745017901814010791

Cited by 11 publications

(11 citation statements)

References 27 publications

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“…Shürmann and Olms reported that the hybrid ceramics Vita Enamic and Lava Ultimate showed better shade stability than did Vita Mark II after immersion in different stain solutions for 120 days (38). Both Vita Mark II and Vita Suprinity showed higher ∆E values than did Vita Enamic and GC Cerasmart, probably because of differences in the inorganic particle content, glazing procedures, and metal oxide content.…”

Section: Discussionmentioning

confidence: 99%

Effects of Glazing Procedures on the Color Stability of Conventional and CAD/CAM Hybrid Ceramics: A Comparative Study

Ozyilmaz¹,

Özel²,

Ahmet³

2019

meandros

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Objective: Ceramic glazing and polishing are important for patient satisfaction and long-term clinical success. Till date, no study has compared color changes after glazing procedures between conventional and more recently introduced ceramics. In this study; we investigated the effects of glazing procedures on the color stability of conventional and CAD/CAM hybrid ceramics using a spectrophotometer. Materials and Methods: Eighty-four disc-shaped specimens were fabricated with seven different dental porcelain materials according to the manufacturers' instructions (n = 12 each): Ivoclar IPS DSign, Vita Omega 900, Ceramco III, Vita Mark II, Vita Enamic, GC Cerasmart, and Vita Suprinity. Both sides of the specimens were polished with wet 600-, 1000-, and 1500-grit aluminium oxide abrasive papers, and color values (L*, a*, b*) were measured using a spectrophotometer before and after glazing. Treatmentinduced changes in the specimen color and topography were evaluated and recorded. The color change (∆E) was calculated from the changes in the mean L*, a*, and b* values. All data were analyzed using Kruskal-Wallis, Mann-Whitney U, and Wilcoxon tests (95% confidence level). Results: Color changes were below the clinically perceptible level (∆E, <3.7) in all specimens. Color change values after the glazing procedures were 2.27 ± 0.55, 2.99 ± 0.67, 1.01 ± 0.58, 1.62 ± 0.70, 0.74 ± 0.45, 1.35 ± 0.52, and 1.37 ± 0.72 for Ivoclar IPS DSign, Vita Omega 900, Ceramco III, Vita Mark II, GC Cerasmart, Vita Enamic, and Vita Suprinity, respectively; thus, there were significant differences between the conventional and CAD/CAM ceramics (p<0.05). The conventional ceramic Vita Omega 900 presented the least color stability, while the CAD/CAM ceramic GC Cerasmart presented the maximum color stability. Conclusions: Glazing procedures do not cause evident changes in the color of conventional and CAD/CAM hybrid ceramics, although the color stability of the latter is better than that of the former.Amaç: Seramik glaze ve parlatma işlemleri hasta memnuniyeti ve uzun süreli klinik başarı için önemlidir. Bugüne kadar hiçbir çalışma, geleneksel ve daha yeni tanıtılan seramikler arasındaki glaze işlemlerinden sonra renk değişimlerini karşılaştırmamıştır. Bu çalışmada glaze prosedürlerinin bir spektrofotometre kullanarak geleneksel ve CAD/ CAM hibrit seramiklerin renk stabilitesi üzerindeki etkilerini araştırılmıştır.

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Section: Discussionmentioning

confidence: 99%

Effects of Glazing Procedures on the Color Stability of Conventional and CAD/CAM Hybrid Ceramics: A Comparative Study

Ozyilmaz¹,

Özel²,

Ahmet³

2019

meandros

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“…The longevity and esthetic appearance of tooth‐colored restorations depends on the material's susceptibility to staining 32 . Although hybrid ceramics have been extensively studied, 40‐70 the information available about the optical characteristics of contemporary CAD/CAM PICN materials is limited.…”

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confidence: 99%

In Vitro Evaluation of Translucency and Color Stability of CAD/CAM Polymer‐Infiltrated Ceramic Materials after Accelerated Aging

Amri

Labban

Alhijji

et al. 2020

Journal of Prosthodontics

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Purpose To investigate and compare the translucency and color stability of a newly introduced polymer‐infiltrated ceramic network (PICN) material (Crystal Ultra) to those of clinically well‐established restorative materials. Materials and Methods A total of 80 specimens measuring (12 × 14 × 1 mm ± 0.05 mm) were prepared from five CAD/CAM (IPS e.max (IPS), Lava Ultimate (LU), Cerasmart (CS), Vita Enamic (VE), Crystal Ultra (CU)) high translucency (HT) blocks in A2 or equivalent shades. Specimens were randomly allocated into two groups (A and B) (n = 8), and were subjected to 5,000 thermal‐cycles (TC). This was followed by one‐week immersion of group A specimens in coffee (staining) solution and group B specimens in distilled water. Following immersion, the specimens from both groups were further subjected to 5,000 TC. A spectrophotometer was used to measure the translucency parameter (TP) and color change (ΔE00) of the samples using CIELAB color coordinates at baseline, after 5,000 TC, following immersion, and after further 5,000 TC. Color stability was evaluated using the CIEDE2000 formula. Data were analyzed by non‐parametric tests (α = 0.05). Results The TP values of the CAD/CAM materials ranged from 18.0‐22.0. Following the initial TC, the changes in TP values were significant for VE (p = 0.012). Coffee immersion and further TC significantly impacted the TP values of PICN (VE and CU) materials compared to glass‐ ceramics (IPS), and resin nanoceramic (CS and LU) materials (p = 0.012). The comparison between CAD/CAM materials at different intervals showed a significant difference in the TP values (p < 0.01). The materials showed perceptible color changes following the initial TC except for PICN materials which demonstrated acceptable color changes. The major color difference was noticed for the resin nanoceramic specimens immersed in coffee; LU and CS showed higher color changes (ΔE00 = 2.45 and 2.09, respectively) than VE and CU (ΔE00 < 1.8). Conclusions The translucency of the newly introduced Crystal Ultra PICN material was low compared to the resin nanoceramics and lithium disilicate glass‐ceramic. The Crystal Ultra material exhibited better color stability compared to resin nanoceramics, but higher color change when compared with Vita Enamic PICN and lithium disilicate glass‐ceramic CAD/CAM materials.

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“…CAD/CAM (Computer-Aided Design/ Computer-Aided Manufacturing) technology was used with success in dentistry for more than two decades. This has brought a lot of advantages, such as shorter treatment time, industrial fabrication of the materials [1,2], with improved characteristics and reduced failure rates [3,4]. Some of the CAD/CAM materials are ready to use immediately after the milling process.…”

Section: Introductionmentioning

confidence: 99%

“…New hybrid CAD/CAM materials are represented by either a ceramic network filled with polymer, or a polymer matrix infiltrated with ceramic particles [6]. The infiltrated ceramics and resins have better elasticity, are less brittle, with improved mechanical, optical, and esthetic properties [1,6,7].…”

Section: Introductionmentioning

confidence: 99%

“…This combination of the ceramic and polymer gives the material the flexibility of the resin and the strength of the ceramic [3,15,16]. The polymer component prevents the crack formation and propagation and determine pressure absorbing produced by the intraoral forces [1,17]. Compared to the ceramic materials, polymer-infiltrated-ceramic-network (PICN) have enhanced fracture toughness (30 GPa) and the modulus of elasticity is equal to the dentin (from 9 to 14 GPa).…”

Section: Introductionmentioning

confidence: 99%

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Material Thickness Influence on Fracture Load of Polymer Infiltrated Ceramic Network CAD/CAM Restorations

Avram¹,

Goguţă²,

Galatanu³

et al. 2021

Mater. Plast.

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Polymer infiltrated ceramics are hybrid materials that combine the strength of ceramics and the flexibility of polymers. The aim of this study was to compare the fracture load capacity of monolithic CAD/CAM crowns with different occlusal thicknesses, made from polymer infiltrated ceramic network. Fifteen full contour CAD/CAM crowns made of Vita Enamic with occlusal thicknesses of 0.5 mm, 1.0 mm and 1.5 mm were fabricated with a wet milling machine. Restorations were cemented on human molars with adhesive cement. Samples were loaded along the long axis until fracture, with a single static compressive force. A scanning electron microscope (SEM) was used to examine the fracture surface of specimens after the fracture. The results of this study reveals that the fracture load of the samples increased progressively with the occlusal thickness. The highest fracture value was recorded for1.5 mm occlusal thickness of the crown. No statistically significant difference was reported between the three experimental groups. It can be concluded that hybrid monolithic CAD-CAM crowns showed sufficient fracture strength to be used for single restorations in the posterior area, even with a reduced occlusal thickness.

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Shade Stability of Polymer-Infiltrated and Resin Nano Ceramics

Cited by 11 publications

References 27 publications

Effects of Glazing Procedures on the Color Stability of Conventional and CAD/CAM Hybrid Ceramics: A Comparative Study

Effects of Glazing Procedures on the Color Stability of Conventional and CAD/CAM Hybrid Ceramics: A Comparative Study

In Vitro Evaluation of Translucency and Color Stability of CAD/CAM Polymer‐Infiltrated Ceramic Materials after Accelerated Aging

Material Thickness Influence on Fracture Load of Polymer Infiltrated Ceramic Network CAD/CAM Restorations

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