Optical and Mechanical Properties of Newly Developed Monolithic Multilayer Zirconia

Elsaka, Shaymaa E.

doi:10.1111/jopr.12730

Cited by 81 publications

(70 citation statements)

References 29 publications

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“…Increasing the cubic crystals improves zirconia's translucency owing to optical anisotropy. SEM micrographs of PRTA showed a larger grain size as compared to PRT (Figure 4), resulting in decreased grain-boundary areas, which act as a scattering source [24]. This observation is in agreement with previous studies [17,25].…”

Section: Discussionsupporting

confidence: 91%

“…Kim and Kim, in their study, showed TP values for zirconia similar to the present study (Bruxzir was 10.29) [25]. However, these values were dissimilar to values reported by other authors [24,26]. Elsaka reported that the TP of Prettau Anterior as monolithic zirconia was 16.8, which was significantly lower than that for Ceramill Zolid FX (CZF) multilayer with 19.4 [24].…”

Section: Discussionsupporting

confidence: 67%

“…However, these values were dissimilar to values reported by other authors [24,26]. Elsaka reported that the TP of Prettau Anterior as monolithic zirconia was 16.8, which was significantly lower than that for Ceramill Zolid FX (CZF) multilayer with 19.4 [24]. While, in another study, Sulaiman et al, reported the TP of 15.8 for Prettau Anterior as compared to 12.4 for Prettau Zirconia at 1 mm [26].…”

Section: Discussionmentioning

confidence: 73%

See 2 more Smart Citations

The Effect of Thermocycling on the Translucency and Color Stability of Modified Glass Ceramic and Multilayer Zirconia Materials

Aljanobi

Al-Sowygh

2020

Cureus

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 73%

See 1 more Smart Citation

The Effect of Thermocycling on the Translucency and Color Stability of Modified Glass Ceramic and Multilayer Zirconia Materials

Aljanobi

Al-Sowygh

2020

Cureus

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“…Flexural strength of 444 MPa, elastic modulus of 70 GPa and fracture toughness of 2.3 MPa m 1 = 2 have been reported for Vita Suprinity [23,24]. The result of a study made by Elsaka, showed fracture toughness value of 3.7 MPa m 1 = 2 and flexural strength of 676 MPa for Ceramill Zolid FX Multilayer [25]. In an in vitro study, the elastic behavior of CAD/CAM materials were compared and polycrystalline zirconia demonstrated Young's modulus and bulk modulus of 206 GPa and 134 GPa, respectively which were almost twice the values demonstrated by zirconia reinforced lithium silicate [26].…”

Section: Discussionmentioning

confidence: 94%

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

Kermanshah

Motevasselian

Kakhaki

et al. 2020

Biomaterial Investigations in Dentistry

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Objective: Ceramic inlay-retained fixed partial denture (IRFPD) is a conservative prosthetic option but the mechanical durability of new high strength zirconia reinforced glass ceramic FPDs is not investigated. The purpose of this study was to compare fracture load of 3-unit ceramic FPDs. Materials and methods: Extracted premolars and molars (N ¼ 64) were used to create three test groups (IRFPDs) and one control group (full coverage FPD) (n ¼ 8). The teeth were embedded in PMMA resin with a mesiodistal distance of 6 mm. Premolars had a distal and molars had a mesial inlay preparation (width: 3 mm; height: 4 mm) in the test groups. IRFPDs were made from a zirconia reinforced lithium silicate (VS) or a monolithic zirconia. Zirconia IRFPDs received 2 types of surface treatments: sandblasting (Zr-IRFPD) or internal coating with feldspathic porcelain (ZrC-IRFPD). Control group was made from monolithic zirconia with the same connector size and zirconia surfaces were sandblasted (Zr-FPD). All restorations were cemented using a resin luting cement. After 5000 thermo-cycles, fracture load values (N) were determined with a universal testing machine at a crosshead speed of 0.75 mm/min. Data were analyzed using 1-way ANOVA and Tukeys post hoc test (p ˂ .05). Result: Fracture load (mean ± SD) of Zr-FPDs, Zr-IRFPDs and ZrC-IRFPDs were 672 ± 183, 672 ± 123 and 638 ± 59, respectively, being not statistically different (p > .05). VS-IRFPD exhibited statically lower values (391 ± 136). The predominant mode of failure was fracture at the connector area in all groups. Conclusion: The fracture load of 3-unit IRFPD was significantly affected by types of ceramics but the retainer design and surface treatment in Zr groups did not show a significant effect.

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“…13,22 Recent study claims that multilayer monolithic zirconia has improved optical and mechanical properties than the conventional monolithic zirconia. 23 The manufacturers of zirconia dental ceramic could adopt those methods to highlight the great mechanical and physical properties of zirconia with optimal translucency for wider clinical application and esthetic satisfaction.…”

Section: Resultsmentioning

confidence: 99%

Comparative Evaluation of the Translucency of Monolithic Zirconia

Alshali

Kazim

Nageeb

et al. 2020

The Journal of Contemporary Dental Practice

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Aims and objectives: New techniques are being developed to invent zirconia with high translucency and better esthetics leading to the development of several brands of monolithic zirconia. The aim of this study is to compare the translucency of three brands of zirconia available for the fabrication of monolithic restorations. Materials and methods: An in vitro study was designed to compare the translucency of three brands of zirconia available for the fabrication of monolithic restorations: Zirlux Zirconia (Vivadent Ivoclar), Zenostar Zr Translucent Zirconia (Weiland), and BruxZir Zirconia (Glidewell). All specimens were prepared to 0.5 mm thickness. Thirty zirconia specimens from each material were finished and polished. After drying, specimens were fired according to the manufacturers' recommendations. A spectrophotometer (Color i5) was used for the translucency test. Each specimen was presented at the view port permitting the light to hit the center of the specimen. Results were saved into the software until all measurements were completed. The data were then transferred to an Excel sheet where translucency parameters were calculated. The one-way analysis of variance (ANOVA) test and the post hoc Bonferroni test were performed to analyze the results. Results: The one-way ANOVA test revealed that there was a statistically significant difference between the groups. This study showed lower translucency of BruxZir in comparison to Zenostar and Zirlux when tested under standardized conditions. Conclusion: There is a statistically significant difference in the translucency between the different brands of zirconia available for monolithic restoration fabrication. Clinical significance: Different brands of zirconia have different degrees of translucency. Material selection should be customized in each case.

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Optical and Mechanical Properties of Newly Developed Monolithic Multilayer Zirconia

Abstract: The optical and mechanical properties of the tested monolithic zirconia are material dependent. Fully stabilized monolithic zirconia materials (CZF and PA) are relatively more translucent than partially stabilized zirconia (ZT).

Cited by 81 publications

References 29 publications

The Effect of Thermocycling on the Translucency and Color Stability of Modified Glass Ceramic and Multilayer Zirconia Materials

The Effect of Thermocycling on the Translucency and Color Stability of Modified Glass Ceramic and Multilayer Zirconia Materials

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

Comparative Evaluation of the Translucency of Monolithic Zirconia

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