The effect of cement material on performance of Zirconia dental crowns in children

2021 ◽  
Author(s):  
Thikrayat Bani-Hani
Keyword(s):  
Cement Material ◽  
Dental Crowns

Deficiencies in Silicone Impression for Crowns and Bridges

2017 ◽  
Vol 68 (10) ◽  
pp. 2317-2319
Author(s):  
Claudia Florina Andreescu ◽  
Oana Botoaca ◽  
Horia Mihail Barbu ◽  
Doina Lucia Ghergic ◽  
Anamaria Bechir ◽  
...  
Keyword(s):  
Dental Practice ◽  
Present Study Deal ◽  
Dental Crowns ◽  
Impression Materials ◽  
Dental Practitioners ◽  
Adequate Quality ◽  
Dental Impression ◽  
Single Crowns

There are many steps in fabrication of dental crowns and bridges at which an error can occur, and a technician can only fabricate a quality restoration if the impression itself is of adequate quality. All dental practitioners should have the ability to evaluate the quality of dental impression before sending to the laboratory. Elastomeric silicones (polysiloxane) are the most utilised impression materials in dental practice. The present study deal with the deficiencies of silicones dental impressions sent to commercial dental laboratories for fabrication of single crowns and bridges.

scholarly journals Effect of frame design and veneering material on biomechanical behavior of zirconia dental crowns veneered with overpressing ceramics

2017 ◽  
Vol 36 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Liliana POROJAN ◽  
Florin TOPALĂ ◽  
Sorin POROJAN ◽  
Cristina SAVENCU
Keyword(s):  
Frame Design ◽  
Biomechanical Behavior ◽  
Dental Crowns

A Comprehensive Study of Osteogenic Calcium Phosphate Silicate Cement: Material Characterization and In Vitro/In Vivo Testing

2015 ◽  
Vol 5 (4) ◽  
pp. 457-466 ◽  
Author(s):  
Tianxing Gong ◽  
Zhiqin Wang ◽  
Yixi Zhang ◽  
Yubiao Zhang ◽  
Mingxiao Hou ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Material Characterization ◽  
Cement Material ◽  
Phosphate Silicate ◽  
In Vivo Testing ◽  
Comprehensive Study

scholarly journals MICROSCOPIC FEATURES OF CEMENT PASTE MODIFIED BY FINE PERLITE

2016 ◽  
Vol 7 ◽  
pp. 12
Author(s):  
Vladimír Hrbek ◽  
Veronika Koudelková ◽  
Pavel Padevět ◽  
Petr Šašek
Keyword(s):  
Electron Microscopy ◽  
Construction Industry ◽  
Lightweight Aggregate ◽  
Cement Matrix ◽  
Instrumented Indentation ◽  
Cement Sample ◽  
Cement Material ◽  
Material Development ◽  
Microscopic Features ◽  
Cement Binder

The use of waste material and replacement of binder element in cementitious composites is in focus of material development. Perlite in the construction industry is usually used in form of lightweight aggregate enhancing the insulating performance of concrete. This paper focuses on integration of fine perlite into the cement matrix and possible replacement of the cement binder in the composition of the material. The macromechanical performance of the modified paste is tested on specimens with 5, 10, 15 and 20% fine perlite substitution and pure cement sample. To distinguish the effect of the perlite on the microstructural level, pure cement material and specimen containing 10% of fine perlite are investigated by the electron microscopy. Furthermore, the mechanical properties of individual phases are examined and compared on same samples by instrumented indentation. The presented results enabled estimation of fine perlite impact on the macro and microscopic performance of the material.

scholarly journals Analysis of the main stresses on dental crowns

2020 ◽  
pp. 241-246
Author(s):  
Corneliu Drugă ◽  
Ionel Șerban ◽  
Barbu Braun ◽  
Irina Tătulea
Keyword(s):  
Dental Crowns

scholarly journals Failure of Ceramic Coatings on Soft Substrates

2000 ◽  
Author(s):  
Brian R. Lawn
Keyword(s):  
Failure Modes ◽  
Ceramic Coatings ◽  
Design Concept ◽  
Weak Interface ◽  
Brittle Coating ◽  
Direct Relevance ◽  
Dental Crowns ◽  
Bonded Interface ◽  
Resistant Ceramic

Abstract A design concept for potentially hard damage-resistant ceramic coatings on relatively soft substrates is proposed. Such coating structures are of direct relevance to biomechanical structures, especially teeth and dental crowns. In this study failure modes in bilayers and trilayers with relatively hard, brittle coating outerlayers on soft, tough substrate underlayers are evaluated. Coating/substrate systems of interest include ceramic/ceramic, ceramic/metal, and ceramic/polymer. A key element of these structures is a well-bonded interface, to prevent delamination during stressing. The objective is to arrest intrusive coating cracks in a tough sublayer, rather than merely to deflect them along a weak interface.

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