Additively Manufactured Dental Crown with Color Gradient and Graded Structure: A Technique Report

This paper presents an original method to create optimized color differences between each step of a CIELAB perceptually uniform color gradient. The relevant equations for the necessary color space transformations are discussed, along with the procedure to determine and optimize the color differences between each gradient step. A specific implementation for perceptually uniform color gradients is discussed for safe terrain clearance in manned aviation during a degraded visual environment.

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Aspiration of the dental crown in an elderly patient

Radiology Case Reports ◽

10.1016/j.radcr.2021.05.041 ◽

2021 ◽

Vol 16 (8) ◽

pp. 2280-2285

Author(s):

Henrique Hadad ◽

Laís Kawamata de Jesus ◽

Pier Paolo Poli ◽

Idelmo Rangel Garcia-Júnior ◽

Francisley Ávila Souza ◽

...

Keyword(s):

Elderly Patient ◽

Dental Crown

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Enhanced recoverable energy storage density of barium strontium titanate-based thin films with compositionally graded structure

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-020-04984-2 ◽

2021 ◽

Author(s):

Ye Wang ◽

Xiaofang Liu ◽

Huajun Sun ◽

Huiting Sui ◽

Chao Yan

Keyword(s):

Thin Films ◽

Energy Storage ◽

Strontium Titanate ◽

Barium Strontium Titanate ◽

Energy Storage Density ◽

Storage Density ◽

Graded Structure ◽

Barium Strontium ◽

Recoverable Energy

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Influence of dental crown topography on fracture resistance of premolars with MOD preparation and subjected to different restorative protocols

Australian Endodontic Journal ◽

10.1111/aej.12511 ◽

2021 ◽

Author(s):

Carulina Bueno Mesquita ◽

Rafael Melara ◽

Simone Bonato Luisi ◽

Luiz Henrique Burnett ◽

Tiago André Fontoura Melo

Keyword(s):

Fracture Resistance ◽

Dental Crown

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Application of the Equivalent Transformation Layering Calculation Model in Heavy Cross-Section FGCs - Axis-Symmetrical Mechanics Problems

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.1533 ◽

2005 ◽

Vol 475-479 ◽

pp. 1533-1536

Author(s):

Liu Ding Tang ◽

Xue Bin Zhang ◽

Bing Zhe Li

Keyword(s):

Mechanical Properties ◽

Cross Section ◽

Calculation Model ◽

Functionally Graded ◽

Equivalent Transformation ◽

Metal Tube ◽

Cross Sectional ◽

Functionally Graded Composites ◽

Graded Structure ◽

Design And Practice

Based on equivalent transformation by means of mathematically rigorous analytics, the stress analysis of heavy cross-sectional, non-homogeneous Functionally Graded Composites (FGCs) has been performed by the layering calculation model in axis-symmetrical mechanics problems. The partially calculated results of the non-homogeneous layered thick-walled metal tube are similar to the design and practice of machine forging moulds manufactured with special welding electrodes developed by the German Capilla Company. The analysis is used complementary to the investigation of the quantitative analysis of thermo-mechanical properties, or the so-called anti-design and the optimization of the graded structure for FGCs.

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Fabrication and Mechanical Properties of Homogenous and Graded Si3N4/(W, Ti)C Nano-Composite Ceramic Tool Materials

Materials Science Forum ◽

10.4028/www.scientific.net/msf.800-801.511 ◽

2014 ◽

Vol 800-801 ◽

pp. 511-515

Author(s):

Xian Hua Tian ◽

Jun Zhao ◽

Shuai Liu ◽

Zhao Chao Gong

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Flexural Strength ◽

Composite Ceramic ◽

Ceramic Tool ◽

Graded Materials ◽

Tool Materials ◽

Graded Structure ◽

Design Ideas ◽

Novel Design

Close attention has been paid to Functional graded materials (FGMs) worldwide for their novel design ideas and outstanding properties. To verify the advantage of FGMS in the design of ceramic tool materials, Si3N4/(W, Ti)C nanocomposite ceramic tool materials with homogenous and graded structure were fabricated by hot pressing and sintering technology. The flexural strength, fracture toughness and hardness of the sintered composites were tested and compared. The experimental results showed that the graded structure improved mechanical properties of the ceramic tool materials, especially the flexural strength and fracture toughness. The introduction of residual compressive stress in the surface layer contributes to the improvement of the properties .

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