نتایج جستجو برای: porcelain body

تعداد نتایج: 735964  

Journal: :Scientific American 1879

2011
Michael Miller

Light-cured flowable composites were introduced to the dental profession in 1995 with Revolution. The original manufacturer (E & D Dental Products) recommended that it could be used for Class III, IV, and V restorations, porcelain veneer cementation, porcelain and marginal defect repairs, sealants, and core buildups. Amazingly, one of the most popular contemporary uses of flowable composites, n...

2016
Anuj kumar Pathak Rohini Gupta Subrata Saha Subir Sarkar Angel Dutta Vishal Jain Anuj Kumar Pathak

School children often encounter traumatic injuries like a crown fracture. They create serious functional, esthetic and psychological problems. Achievement of promising restoration that preserves its aesthetics and strength is the greatest desire for both children and their parents and is a challenging task for the dentist. The restorative options in these cases usually include composite resin a...

Journal: :مجله دندانپزشکی 0
نیره رشیدان n. rashidan حسینعلی ماهگلی ha. mahgoli

the major foible of dental ceramics is their brittle nature. therefore, the producers of these materials have focused on the “strength” issue. a method of increasing strength is ion exchange on porcelain surface which leads to formation of a compressive crust that opposing forces should overcome before developing a crack. in current study, ion exchange in two types of porcelain, ceramco ii whic...

2013
Asfar Ali Khan Ekram Husain

Modern Society is strongly dependent on a reliable power supply. The availability of cheap and reliable supply of electrical energy is an indicator of societal welfare. Uninterrupted reliable operation of a modern power system depends to a great extent on reliable and satisfactory performance of insulators under different environmental conditions. This paper reports result of natural pollution ...

2012
Waluyo Ngapuli I. Sinisuka Suwarno Maman A. Djauhari

This paper presents the experimental results of comparison between leakage currents and discharge currents. The leakage currents were obtained on polluted porcelain insulator. Whereas, the discharge currents were obtained on lightly artificial polluted porcelain specimen. The conducted measurements were leakage current or discharge current and applied voltage. The insulator or specimen was in a...

2009
JIHONG LIU FANGFANG HAN F. HAN

Computer-aided tooth shade determination of the natural tooth is an emerging application area which is still in development. Selecting the correct porcelain type is the key to repair teeth successfully. But the color and shade determined by human observers could not achieve a satisfied result because of the effect of the surrounding light and the limit of human eyes. And the computer-aided toot...

Journal: :Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] 2006
Harald O Heymann

UNLABELLED Numerous bonded bridge designs have been advocated over the years for the temporary or permanent replacement of missing teeth. Both metal and all-porcelain designs of bonded bridges have been advocated, with varying degrees of success. However, all of these designs involve some degree of tooth preparation, making them irreversible in nature. The Carolina bridge, a novel all-porcelain...

2016
Gao Liao

A laser photoacoustic technique has been developed to evaluate the surface acoustic wave (SAW) velocity of porcelain. A Q-switched Nd:YAG laser at 1064 nm was focused by a cylindrical lens to initiate broadband SAW impulses, which were detected by an optical fiber interferometer with high spatial resolution. Multiple near-field surface acoustic waves were observed on the sample surface at vario...

Journal: :Dental materials journal 2018
Evaggelia Papia Pernilla Arnoldsson Ayna Baudinova Ryo Jimbo Per Vult VON Steyern

The objectives were to analyze the oxide layer generated between titanium and porcelain during firing and compare it in different manufacturing techniques: cast, milled and EBM-technique. Seventy two specimens were manufactured, subdivided according to surface treatment: time of passivation (P) and no time of passivation (NP) before porcelain firing. Specimens from each group were analyzed with...

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