scholarly journals Ceramic Restorations Based on Zirconium Dioxide for Orthopedic Dentistry

2021 ◽  
pp. 172-178
Author(s):  
Alina Anatolyevna Muzayeva ◽  
Abulmuslim Magomedovich Nuraliev ◽  
Saida Astanovna Temirova ◽  
Elena Anatolyevna Muzaeva ◽  
Turpal-Ali Arsanovich Adaev ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Solid Solutions ◽  
Zirconium Dioxide ◽  
High Strength ◽  
Scientific Work ◽  
Ceramic Materials ◽  
Strength Parameters ◽  
Ytterbium Oxide ◽  
Biomedical Materials ◽  
Ceramic Restorations

Currently, ceramics based on solid solutions of zirconium dioxide tetragonal structure are common biomedical materials. In commercially common ceramics of orthopedic dentistry based on zirconium dioxide, the stabilization of the tetragonal shape is achieved by the introduction of yttrium or cerium cations. As a result of this scientific work, a ceramic material based on nanopowders of a system of zirconium dioxide and ytterbium oxide with high strength parameters has been developed. The results of the conducted research allow us to recommend the new Yb–TZP ceramics as an alternative to Y–TZP ceramic materials for restorations in orthopedic dentistry.

scholarly journals Evaluation of zirconia bonding to veneering porcelain

2014 ◽  
Vol 60 (02) ◽  
pp. 51-56 ◽  
Author(s):  
Aneta Mijoska ◽  
Mirjana Popovska
Keyword(s):  
Zirconium Dioxide ◽  
Adhesive Bonding ◽  
High Strength ◽  
Dental Tissues ◽  
Dental Crowns ◽  
Standard Procedures ◽  
All Ceramic ◽  
Hard Dental Tissues ◽  
Ceramic Restorations

Zirconium dioxide as core ceramic material for dental crowns and bridges, possess high strength, chemical stability and superior aesthetics after veneering. Veneering ceramic is considered to be the weakest part of all-ceramic restorations. The adhesion between the core and veneering porcelain is based on the manner in which the connection occurs in metal-ceramic structures. Standard procedures for connecting zirconia to hard dental tissues and veneering materials do not achieve the required strength of bonding. The aim of the paper is to investigate different surface treatments of the zirconium dioxide ceramic core and find the best, for achieving highest adhesive bonding values to veneering porcelain. The study was primarily designed to investigate the bonding strength of the veneering porcelain to zirconia with in vitro Macro shear bond strength test. The specimens with different surface treatment of the zirconia were divided in five groups of twelve according to the treatment of zirconium surface and results showed highest bonding values for specimens treated with Rocatec system.

scholarly journals Addition of a pontic to all-ceramic Turkom-Cera fixed partial denture restorations

2013 ◽  
Vol 07 (02) ◽  
pp. 233-238
Author(s):  
Bulent Uludag ◽  
Emre Tokar ◽  
Serdar Polat
Keyword(s):  
High Stress ◽  
High Strength ◽  
Ceramic Materials ◽  
Related Factors ◽  
Time Saving ◽  
Partial Denture ◽  
Fixed Partial Denture ◽  
All Ceramic ◽  
Alumina Gel ◽  
Ceramic Restorations

ABSTRACTHigh-strength all-ceramic materials are commonly used in dentistry. When complications occur in an all-ceramic restoration, the restoration is usually replaced. This article describes the time-saving ability and cost-effectiveness of this novel technique for the addition of a pontic in two complicated clinical cases. Turkom-CeraTM [Turkom-Ceramic (M) Sdn. Bhd.] with aluminum oxide (99.98%) is an all-ceramic system that offers the option of addition of a new pontic to the sintered framework. The new pontic was cut off from an alumina blank [Turkom-Ceramic (M) Sdn. Bhd.], moistened, and attached to the framework using alumina gel [Turkom-Ceramic (M) Sdn. Bhd.]. The framework was veneered with veneering porcelain (Vita VM 7; VITA Zahnfabrik). The two cases presented here involving the addition of a pontic to sintered framework were followed up for at least 1 year. No complication was detected or reported by the patients. Alumina- and zirconia-based ceramics are particularly suitable for for all-ceramic restorations in high-stress bearing areas. However, replacement of a failed all-ceramic restoration is not the most practical solution, considering both cost and tooth-related factors. This attractive feature of the Turkom-Cera allows the repair of a fractured ceramic coping or the addition of a new pontic to restorations.

Piezoelectric Ceramics Based on Perovskite Solid Solutions with MPB - Mechanochemical Activation and Texturing for High Sensitivity and Power

2006 ◽  
Vol 45 ◽  
pp. 2432-2439
Author(s):  
Miguel Algueró
Keyword(s):  
Ternary System ◽  
Phase Boundary ◽  
Ceramic Material ◽  
Grain Growth ◽  
Solid Solutions ◽  
Mechanochemical Activation ◽  
High Sensitivity ◽  
Ceramic Materials ◽  
Templated Grain Growth ◽  
Pbtio3 Ceramic

Ceramics of morphotropic phase boundary (MPB) Pb(Mg1/3Nb2/3)O3-PbTiO3 have been processed from powders synthesized by mechanochemical activation of oxides. Their properties have been characterised and are compared with those of a MPB Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramic material by the columbite route. Current experiments on texturing by templated grain growth from the powders synthesised by mechanochemical activation are briefly described. MPB Pb(Zn1/3Nb2/3)O3-PbTiO3 has also been mechanosynthesised, though perovskite is not stable under heating and ceramics cannot be processed. Pb(Fe1/2Nb1/2)O3 is being investigated as a means of stabilising the perovskite, and MPB ceramic materials of the ternary system have been successfully prepared.

scholarly journals An Overview of the Development and Strengthening of All-Ceramic Dental Materials

2018 ◽  
Vol 11 (3) ◽  
pp. 1553-1563
Author(s):  
Ghassan Abdul-Hamid Naji ◽  
Ros Anita Omar ◽  
Rosiyah Yahya
Keyword(s):  
English Language ◽  
Dental Materials ◽  
High Strength ◽  
Ceramic Materials ◽  
Successful Implementation ◽  
Framework Materials ◽  
Evolution And Development ◽  
All Ceramic ◽  
Manufacturing Techniques ◽  
Ceramic Restorations

High-strength all-ceramic systems for fixed partial dentures (FPDs) are necessary for replacing missing teeth. The ability to fabricate a restoration outside the mouth and subsequently integrate it with a tooth extends the range of materials available to be utilized by a dentist. This article presents a review of the development of all-ceramic restorations, including the evolution and development of materials, technologies and how to improve the strength of all-ceramic restorations, with respect to survival, applications, strength, color, and aesthetics. New core/framework materials have developed and evolved over the last decade because of the growth of ceramic materials and systems currently available for utilization. A search of English language reviewed literature was undertaken, which focused on the evidence-based published research articles. This review also elucidates the various all-ceramic materials and systems currently available for clinical use, and that no single universal material or system exists for all clinical cases. Successful implementation depends on the clinicians, materials, manufacturing techniques, and individual clinical condition. Further longitudinal clinical studies are recommended for the development of ceramic materials and systems.

High-strength ceramic from zirconium dioxide partly stabilized with ytterbium oxide

Refractories ◽  
1986 ◽  
Vol 27 (7-8) ◽  
pp. 451-454
Author(s):  
Yu. I. Komolikov ◽  
S. Yu. Pliner
Keyword(s):  
Zirconium Dioxide ◽  
High Strength ◽  
Ytterbium Oxide

Ceramic Materials. Effects of Fracture Origin and Microstructure on Bending Strength of High-Strength Si3N4.

1994 ◽  
Vol 43 (489) ◽  
pp. 599-605 ◽  
Author(s):  
Akira YAMAKAWA ◽  
Takehisa YAMAMOTO ◽  
Tomoyuki AWAZU ◽  
Kenji MATSUNUMA ◽  
Takao NISHIOKA
Keyword(s):  
Bending Strength ◽  
High Strength ◽  
Ceramic Materials ◽  
Fracture Origin

Microdesigning of Lightweight/High Strength Ceramic Materials

1989 ◽  
Author(s):  
I. A. Aksay ◽  
G. C. Stangle ◽  
D. M. Dabbs ◽  
M. Sarikaya
Keyword(s):  
High Strength ◽  
Ceramic Materials

Numerical Modeling and Experimental Characterization of the Pyroplasticity in Ceramic Materials during Sintering

2010 ◽  
Vol 62 ◽  
pp. 203-208 ◽  
Author(s):  
Pasquale Bene ◽  
Danilo Bardaro ◽  
Daniela Bello ◽  
Orazio Manni
Keyword(s):  
Ceramic Material ◽  
Ceramic Materials ◽  
Constitutive Law ◽  
Beam Deflection ◽  
Firing Cycle ◽  
Experimental Characterization ◽  
Viscosity Increase ◽  
Ceramic Components ◽  
Deflection Theory ◽  
Sintering Shrinkage

The aim of the work is the study of the pyroplasticity in ceramic materials in order to simulate the deformations of complex ceramic component during sintering. A ceramic material undergoing densification can be treated as a linear viscous material. Generally, the viscosity decreases as the temperature increases, however the densification and the consequent grain growth, result in a viscosity increase. A bending creep test is proposed for measuring the change in viscosity of the ceramic material during densification. Equations, based on beam deflection theory, are derived to determine the viscosity during the whole firing cycle by measuring the deflection in the centre of specimens. In addition, dilatometric analyses are performed to measure the sintering shrinkage and the specimen density, which continuously changes during the sintering process. On the basis of an accurate experimental characterization the parameters of Maxwell viscoelastic constitutive law are derived. A numerical-experimental procedure has been adopted in order to calibrate the numerical model that, finally, has been used to predict the pyroplastic deformations of complex ceramic components.

Thermomechanical Analysis as a Tool for Optimizing Sintering Regimes for Ceramic Materials based on Zirconium Dioxide

2013 ◽  
Vol 54 (4) ◽  
pp. 307-311 ◽  
Author(s):  
S. E. Porozova ◽  
V. B. Kul’met’eva ◽  
A. A. Gurov ◽  
D. S. Vokhmyanin
Keyword(s):  
Zirconium Dioxide ◽  
Ceramic Materials ◽  
Thermomechanical Analysis

Application of Focus-Variation Technique in the Analysis of Ceramic Chips

2019 ◽  
Vol 957 ◽  
pp. 187-194
Author(s):  
Roman Wdowik ◽  
Slawomir Swirad
Keyword(s):  
Machine Tool ◽  
Ceramic Material ◽  
Microscopic Study ◽  
Ceramic Materials ◽  
Software Tools ◽  
Milling Machine ◽  
Focus Variation ◽  
3D Scans ◽  
Physical Phenomena ◽  
Variation Technique

The paper presents the method of a microscopic study of ceramic chips which can be useful in the analysis of physical phenomena regarding machining of ceramic materials. The analyzed chips were obtained on the milling machine tool from the Al2O3 based ceramic material. The measurements were performed using focus-variation technique (FVT). The InfiniteFocus Real3D microscope from Alicona Imaging company was applied. The paper mainly focuses on the methodology of measurements and the application of microscope’s software tools which can be used in the analysis of chips' 3D scans. The conditions of measurement process are discussed on the basis of the results of exemplary measurements of ceramic chips.

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