scholarly journals Review of Different Materials that can be CAD/CAM Processed Description, chemical composition, indications in dentistry areas

2019 ◽  
Vol 70 (11) ◽  
pp. 4029-4034
Author(s):  
Daniela Popa ◽  
Mariana Constantiniuc ◽  
Kamel Earar ◽  
Veronica Mercut ◽  
Monica Scrieciu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
Restorative Dentistry ◽  
Physical Chemical ◽  
Cad Cam ◽  
Materials Used ◽  
Cam Systems ◽  
The Ideal ◽  
Design And Production

The objective of this paper is to inform on the indications, appearance and advantages offered by each category of materials used in CAD / CAM technique for different prosthetic restorations.Modern techniques in restorative dentistry include CAD/CAM systems and materials that can be CAD/CAM processed. It is very important to know the physical-chemical properties and the indications of these materials to translate the patient�s wishes to reality providing the ideal restoration. There are a variety of CAD/CAM materials to choose from, all designed to provide efficient restoration design and production. We can choose from available materiales including glass ceramics, nano ceramics, zirconia, hybrid ceramics, BioHPP, in blocks or disks form.

scholarly journals Review of Different Materials that can be CAD/CAM Processed Description, chemical composition, indications in dentistry areas

2019 ◽  
Vol 70 (11) ◽  
pp. 4029-4034
Keyword(s):  
Glass Ceramics ◽  
Chemical Properties ◽  
Restorative Dentistry ◽  
Materials Properties ◽  
Physical Chemical ◽  
Cad Cam ◽  
Technology Cad ◽  
Materials Used ◽  
Cam Systems ◽  
The Ideal

The objective of this paper is to inform on the indications, appearance and advantages offered by each category of materials used in CAD / CAM technique for different prosthetic restorations.Modern techniques in restorative dentistry include CAD/CAM systems and materials that can be CAD/CAM processed. It is very important to know the physical-chemical properties and the indications of these materials to translate the patient’s wishes to reality providing the ideal restoration. There are a variety of CAD/CAM materials to choose from, all designed to provide efficient restoration design and production. We can choose from available materiales including glass ceramics, nano ceramics, zirconia, hybrid ceramics, BioHPP, in blocks or disks form. Keywords: CAD/CAM technology, CAD/CAM materials, properties, indications

Preparation of Glass-Ceramics Using Molybdenum Tailings

2011 ◽  
Vol 284-286 ◽  
pp. 1431-1434 ◽  
Author(s):  
Jin Rui Zhang ◽  
Ru Wang
Keyword(s):  
Heat Treatment ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Crystalline Phase ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
The Other ◽  
Raw Material ◽  
Physical Chemical ◽  
Nucleation Agents

In order to utilization the molybdenum tailings which be deposited in large quantities. Test used it to prepare glass-ceramics as main raw material, TiO2 as nucleation agents and CaO-Al2O3-SiO2 system and wollastonite as the principal crystalline phase. Heat treatment system of glass-ceramics was based on the differential thermal analysis. The crystalline phase, microstructure and characteristics of glass-ceramics were analysis by XRD, SEM and physical, chemical properties test. The result shows that the performance of glass-ceramics was superior to the other types of building decoration stone.

Comprehensive Review on pH and Nutrients Detection Sensitive Materials and Methods for Agriculture Applications

2019 ◽  
Vol 17 (9) ◽  
pp. 663-670 ◽  
Author(s):  
A. Akshaya Kumar ◽  
S. K. Naveen Kumar
Keyword(s):  
Chemical Properties ◽  
Strong Relationship ◽  
Review Article ◽  
Ion Selective Electrodes ◽  
Optical Parameters ◽  
Physical And Chemical Properties ◽  
Physical Chemical ◽  
Materials Used ◽  
Physical And Chemical ◽  
And Chemical Properties

This review article elaborates the pH and nutrients detection sensitive materials and methods along with their principle of operations, merits, demerits, and application area. The sensitive materials used in the sensors react with the analytes and shows variation in electrical, physical, chemical, biological and optical parameters. The glass probe method, optical light spectroscopy, ion-selective electrodes, ion-selective field effective transistors, electrochemical interdigitated conductimetric method and microcantilever methods are the predominant techniques to detect the pH and nutrients in various medium. Most of the researchers have discussed the fabrication of pH and nutrients sensors individually in various applications, but very few numbers of sensitive materials and techniques discussed to detect the pH and nutrients in the soil. There is a strong relationship between pH and nutrients in the soil based on a number of important physical and chemical properties of the soil. We are strongly recommending that soil pH and nutrients measuring sensors can develop through the combinational approach of pH and nutrients with the help of nanostructured materials, seems to be more effective for agriculture applications.

scholarly journals Characterisation of recycled ceramic mortars for use in prefabricated beam-filling pieces in structural floors

2019 ◽  
Vol 69 (334) ◽  
pp. 189
Author(s):  
P. Rubio de Hita ◽  
F. Pérez-Gálvez ◽  
M. J. Morales-Conde ◽  
M. A. Pedreño-Rojas
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Partial Replacement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ceramic Waste ◽  
Physical Chemical ◽  
Different Types ◽  
Materials Used

This study analyses a procedure to manufacture mortars with different percentages of ceramic waste as partial replacement for aggregates. The study also examines the physical, chemical and mechanical properties of the new mortars, analysing substitution ratios that range from 10% to 50%. Prior to this, all the materials used in the production of the mortar were characterised using X-ray diffraction (XRD) and fluorescence (XRF). The objective was to determine the similarity between different types of ceramic waste, as well as the differences in the minerology and chemical composition with the aggregate. The results of the study show that it is possible to obtain mortars with lower densities compared to the same product with no recycled content. The product’s characteristics make it ideal for the manufacture of prefabricated components for structural floors for rehabilitation works. Finally, the pieces are used in a real rehabilitation case study, highlightining the structural advantages.

scholarly journals PREPARATION SOME ACID-ACTIVATED MONTMORILLONITES FROM CU CHI CLAY AND USING AS CATALYST IN ONE-POT CONVERSION OF BENZALDEHYDE INTO BENZONITRILE

2011 ◽  
Vol 14 (4) ◽  
pp. 43-53
Author(s):  
Dung Duc Pham ◽  
Dat Thanh Vu ◽  
Thach Ngoc Le
Keyword(s):  
Chemical Composition ◽  
Cation Exchange Capacity ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Solid Catalyst ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
Physical Chemical ◽  
The One

Montmorillonite is a "green" solid catalyst and support used in many organic reactions. In this paper, we have prepared some acid-activated montmorillonites from Cu Chi clay. Then, we determinated physical-chemical properties such as specific surface area, cation exchange capacity, X-ray diffraction, chemical composition and acidity of these samples. Finally, we chose the best from these montmorillonites and used as catalyst in the one-pot conversion of benzaldehyde into benzonitrile under solvent-free and microwave irradiation.

scholarly journals Bonding Strength of Resin Cement to Silicate Glass Ceramics for Dental CAD/CAM Systems is Enhanced by Combination Treatment of the Bonding Surface

2007 ◽  
Vol 26 (5) ◽  
pp. 713-721 ◽  
Author(s):  
Yusuke SHIMAKURA ◽  
Yasuhiro HOTTA ◽  
Akihiro FUJISHIMA ◽  
Jun KUNII ◽  
Takashi MIYAZAKI ◽  
...  
Keyword(s):  
Silicate Glass ◽  
Combination Treatment ◽  
Bonding Strength ◽  
Glass Ceramics ◽  
Resin Cement ◽  
Cad Cam ◽  
Cam Systems ◽  
Bonding Surface

Effect of Finishing and Polishing on Roughness and Gloss of Lithium Disilicate and Lithium Silicate Zirconia Reinforced Glass Ceramic for CAD/CAM Systems

2018 ◽  
Vol 43 (1) ◽  
pp. 90-100 ◽  
Author(s):  
A Vichi ◽  
R Fabian Fonzar ◽  
C Goracci ◽  
M Carrabba ◽  
M Ferrari
Keyword(s):  
Surface Treatment ◽  
Glass Ceramics ◽  
Lithium Silicate ◽  
Material Surface ◽  
Cad Cam ◽  
Group A ◽  
Treatment Interaction ◽  
Group B ◽  
Cam Systems ◽  
Significant Factors

SUMMARY Objective: To assess the efficacy of dedicated finishing/polishing systems on roughness and gloss of VITA Suprinity and IPS e.max CAD. Method: A total of 24 blocks of Suprinity and 24 of e.max were cut into a wedge shape using an InLab MC-XL milling unit. After crystallization, the 24 Suprinity wedges were divided into four subgroups: group A.1: Suprinity Polishing Set Clinical used for 30 seconds and group A.2: for 60 seconds; group A.3: VITA Akzent Plus Paste; and group A.4: spray. The 24 e.max wedges (group B) were divided into four subgroups according to the finishing procedure: group B.1: Optrafine Ceramic Polishing System for 30 seconds and group B.2: for 60 seconds; group B.3: IPS e.max CAD Crystall/Glaze paste; and group B.4: spray. After finishing/polishing, gloss was assessed with a glossmeter and roughness evaluated with a profilometer. Results were analyzed by applying a two-way analysis of variance for gloss and another for roughness (α=0.05). One specimen per each subgroup was observed with a scanning electron microscope. Results: For roughness, materials and surface were significant factors (p<0.001). Suprinity exhibited significantly lower roughness than e.max. Also the Material-Surface Treatment interaction was statistically significant (p=0.026). For gloss, both material and surface treatment were significant factors (p<0.001). VITA Suprinity showed significantly higher gloss than e.max. Also the Material-Surface Treatment interaction was statistically significant (p<0.001). Conclusions: Manual finishing/polishing for 60 seconds and glazing paste are the most effective procedures in lowering the roughness of CAD/CAM silica-based glass ceramics. Manual finishing/polishing for 60 seconds allows milled silica-based glass ceramics to yield a higher gloss. VITA Suprinity displayed higher polishability than IPS e.max CAD.

Calcium Phosphate Materials in Restorative Dentistry: a Review

1988 ◽  
Vol 2 (1) ◽  
pp. 164-180 ◽  
Author(s):  
R.Z. Legeros
Keyword(s):  
Calcium Phosphate ◽  
Polymer Composites ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
Current Status ◽  
Medical Applications ◽  
Restorative Dentistry ◽  
Calcium Phosphate Cements ◽  
Physico Chemical

This report deals with some of the calcium phosphate materials which are currently used in preventive and restorative dentistry and other calcium phosphate materials which have potential for dental and medical applications. Such materials include those which form calcium phosphate in situ (e.g., Bioglass ceramics and calcium phosphate cements) and those originating from natural materials (such as corals and bones). The reports on the development and current status of the calcium phosphate ceramics and glass ceramics presented here were based on recent reviews and recent evaluations of clinical studies for the period 1975 to 1986 (Table 3) with humans and with animals when reports on human studies were not yet available. Methods of preparation and relevant physico-chemical properties of some of the calcium phosphate materials were based on data reported in the literature and on other studies by the author. New calcium phosphate materials, e.g., calcium phosphate cements, calcium phosphate-coated implants, calcium phosphate/polymer composites, have also been briefly covered in this report. Based on the information summarized in Tables 1 to 6 and on solicited comments from clinicians and researchers involved with calcium phosphate materials, several areas of basic and clinical research are recommended (Table 7).

scholarly journals Implementasi teknologi digital untuk meningkatkan kualitas sepatu pada Industri Kecil dan Menengah

2019 ◽  
Vol 3 (5) ◽  
pp. 159-164
Author(s):  
Caecilia Sri Wahyuning
Keyword(s):  
Digital Technology ◽  
Shoe Design ◽  
Shoe Last ◽  
Substantial Investment ◽  
Cad Cam ◽  
3D Printers ◽  
3D Scanners ◽  
Cam Systems ◽  
Design And Production

One important aspect in shoe design is a matter of comfort, which is determined by dimensions and the shape of shoe last which is influenced by the design of the master shoe last. The use of 3D scanners, 3D printers, and CAD / CAM systems in the process of master shoe last design and production of shoe last can improve the quality of shoe products. However, the application of technology to the IKM implies the need to increase HR capabilities and substantial investment. This indicates the need for involvement of government and institutions / R & D institutions or universities. Therefore, to improve the design of university competencies in mastering technology, curriculum needs to be designed that refers to the competence of designer work in accordance with the progress / development of digital technology in the process of design and production. Key words: industry 4.0, Small and Medium Industries, master shoe last, quality

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