An Assessment of Burs Designed to Cut Zirconia

Millar, Brian

doi:10.4236/ojst.2017.75021

Cited by 4 publications

(8 citation statements)

References 5 publications

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“…The manufacturers of zirconia-cutting burs claim (30) to utilise a patented technology to increase bonding strength between the nickel plating of the bur and the diamond grit particles. However, in the subsequent fiveminute cut, the blue band diamond bur demonstrated a significant reduction in cutting efficiency compared to the zirconia-cutting bur.…”

Section: Discussionmentioning

confidence: 99%

“…These features are thought to contribute to increasing the cutting efficiency of zirconia burs (30). These features are thought to contribute to increasing the cutting efficiency of zirconia burs (30).…”

Section: Discussionmentioning

confidence: 99%

“…designed to minimise heat production. These features are thought to contribute to increasing the cutting efficiency of zirconia burs (30).…”

Section: Discussionmentioning

confidence: 99%

“…This can be attributed to a few explanations. The manufacturers of zirconia‐cutting burs claim to utilise a patented technology to increase bonding strength between the nickel plating of the bur and the diamond grit particles. This supposedly increases the durability of the bur as it minimises the loss of diamond particles.…”

Section: Discussionmentioning

confidence: 99%

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Assessing the cutting efficiency of different burs on zirconia substrate

Peters

et al. 2019

Aust Endodontic J

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Cutting dental zirconia for endodontic access preparation is difficult. Therefore, this study aimed to determine cutting efficiency of various burs when cutting this material. An air turbine handpiece was used in a customised test rig to cut sintered zirconia specimens, using a conventional blue band diamond, two different zirconia-cutting diamond and a zirconia-cutting tungsten carbide bur. Position and speed of the bur were continuously determined using wireless data acquisition over two successive five-minute runs. Differences in cutting efficiency were statistically analysed. Burs were examined using light and scanning electron microscopy (SEM). All diamond burs cut zirconia more efficiently than the tungsten carbide bur. Overall, all burs showed decreasing cutting efficiency over time. SEM images showed discernible wear and damage to the cutting portion of each bur head. It is concluded that zirconia-cutting burs are advantageous regarding durability, and carbide burs are rather ineffective against carbide substrate. Cutting ZirconiaO. A. Peters et al.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…designed to minimise heat production. These features are thought to contribute to increasing the cutting efficiency of zirconia burs (30).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Assessing the cutting efficiency of different burs on zirconia substrate

Peters

et al. 2019

Aust Endodontic J

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“…Monolithic zirconia restorations have many advantages such as enabling for minimal invasive tooth preparation, causing minimal wear on the opposing teeth and exhibiting high flexural strength. Besides, these restorations can be produced in the laboratory with computer-assisted manufacturing (CAD/CAM) systems in a short time without adding any porcelain [1]- [6]. In recent years thanks to the production and the use of high translucent monolithic zirconia materials, the esthetic success of restorations has increased [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermocycle Aging on Color Stability of Monolithic Zirconia

Albayrak¹,

Gül²,

Bayındır³

2019

OJST

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Background: The color stability of dental restorative materials is important for long-term clinical success. Objectives: The objective of this study was to examine the effect of thermocycling on the color and translucency stability of monolithic zirconia. Materials and methods: A total of 80 disc-shaped specimens (1 cm diameter) were produced from monolithic zirconia material, Katana High Translucent (Kuraray Noritake Dental, Kurashiki, Japan). The specimens were prepared in four different thicknesses: 0.5 mm, 1 mm, 1.5 mm and 2 mm. Before thermocycling, color measurements of the specimens were made by a spectrophotometer (Spectro Shade TM MICRO; MHT Optic Research AG, Milan, Italy). After the thermal aging procedure, the color measurement was repeated. Data obtained from the study were analyzed with descriptive statistics, correlation analysis, one-way ANOVA and Tukey's tests.How to cite this paper: Koseoglu, M., Albayrak, B., Gül, P. and Bayindir, F. (2019) Effect of Thermocycle Aging on Color Stability of Monolithic Zirconia.Open Journal of Stomatology,9,[75][76][77][78][79][80][81][82][83][84][85]

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Effect of Different Shading Techniques on Color, Translucency and Flexural Strength of Zirconia Ceramic after Aging

Elbadry

Mohsen²,

Hashem³

2022

Egyptian Dental Journal

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Purpose:The ultimate appearance of all ceramic restorations is significantly influenced by color and translucency. The performance of the restoration is significantly influenced by flexural strength. This study's objective was to assess how various shading methods affected the color, translucency, and flexural strength of monolithic zirconia ceramic as it aged.Materials and Methods: Thirty zirconia discs with a diameter of 12mm and thickness of 1mm were divided into two groups of 15 discs each according to the technique of shading, the first group was constructed from A2 pre-shaded zirconia while the second group was constructed from unshaded zirconia that was shaded by immersion in A2 coloring liquid. Aging was done using acetic acid 4% for both groups. Color and translucency were measured using a spectrophotometer before and after artificial aging. Flexural strength was measured using a universal testing machine before and after aging. Data were collected, tabulated, and statistically analyzed. Results:Color change of both pre-shaded and liquid-shaded zirconia were within the clinically acceptable range (1.7±0.3) and (1.9±0.3) respectively and there was no significant difference in translucency between both groups' P value (0.253). Flexural strength increased from (921.9±73.3) before aging to (1025.1±178.5) after aging with pre-shaded zirconia while it decreased from (938.6±32.7) before aging too (899±54.5) after aging with liquid shaded zirconia but this difference was statistically non-significant. Conclusion:The shading technique had no noticeable effect on color, translucency, or flexural strength before or after aging.

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An Assessment of Burs Designed to Cut Zirconia

Cited by 4 publications

References 5 publications

Assessing the cutting efficiency of different burs on zirconia substrate

Assessing the cutting efficiency of different burs on zirconia substrate

Effect of Thermocycle Aging on Color Stability of Monolithic Zirconia

Effect of Different Shading Techniques on Color, Translucency and Flexural Strength of Zirconia Ceramic after Aging

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