Results 21 to 30 of about 29,267 (265)

A Comparative Study of Marginal Adaptation between Monolithic and Layered Zirconia Crowns: A Literature Review [PDF]

open access: yesJournal of Dental Materials and Techniques, 2022
Introduction: Marginal adaptation highly affects the long-term success of crowns. This study intends to investigate the marginal adaptation of monolithic zirconia and veneered zirconia crowns.
Ezatollah Jalalian, Verishe Rastin
doaj   +1 more source

On the Dielectric Constant of Zirconia and Lime-zirconia

open access: yesZeitschrift für Naturforschung A, 1971
Abstract The dielectric constant of monoclinic zirconia and of lime-zirconia (up to a CaO content of 20% mole) has been measured at 25 °C by the powder method. For pure ZrO2 the D.C. is 13.5, while for lime-zirconia a non linear dependence on the CaO content has been observed in the measured range, with a maximum at about 14% mole CaO ...
Manlio Sanesi   +3 more
openaire   +1 more source

THE EFFECT OF COMPLETE AND PARTIAL CONTOUR ZIRCONIA COPINGS ON THE FRACTURE RESISTANCE OF ALL CERAMIC RESTORATIONS [PDF]

open access: yesAlexandria Dental Journal, 2018
INTRODUCTION Veneer chipping is a common failure of zirconia based restorations, especially in the presence of high occlusal loads. Modifying zirconia design may influence veneer chipping.
Sanaa H Abdel Kader   +2 more
doaj   +1 more source

Effect of Speed Sintering on Low Temperature Degradation and Biaxial Flexural Strength of 5Y-TZP Zirconia

open access: yesMolecules, 2022
Translucent zirconia is becoming the material of choice for the esthetic restorative material. We aimed to evaluate the surface structure, phase determination, translucency, and flexural strength of 5Y-TZP Zirconia (Katana STML Block and Disc) between ...
Suchada Kongkiatkamon   +1 more
doaj   +1 more source

Assessment and comparison of retention of zirconia copings luted with different cements onto zirconia and titanium abutments: An in vitro study

open access: yesThe Journal of Indian Prosthodontic Society, 2016
Aim: The purpose of this in vitro study was to assess and compare the retention of zirconia copings luted with different luting agents onto zirconia and titanium abutments.
Neelima Sreekumar Menon   +4 more
doaj   +1 more source

Effect of hot etching with HF on the surface topography and bond strength of zirconia

open access: yesFrontiers in Materials, 2022
Zirconia has occupied an increasingly important role in oral clinical applications in recent years. However, how to achieve the ideal bonding effect of zirconia is a significant problem that needs to be solved urgently in oral clinics.
Zhuoran Liang   +9 more
doaj   +1 more source

The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide [PDF]

open access: yesJournal of the Serbian Chemical Society, 2013
Two zirconia samples were prepared by precipitation from aqueous zirconium oxychloride and zirconil sulphate solutions with potassium hydroxide. The prepared zirconia samples were amorphous.
Stanković Jovan B.   +2 more
doaj   +1 more source

Femtosecond Laser Irradiation to Zirconia Prior to Calcium Phosphate Coating Enhances Osteointegration of Zirconia in Rabbits

open access: yesJournal of Functional Biomaterials
Calcium phosphate (CaP) coating of zirconia and zirconia-based implants is challenging, due to their chemical instability and susceptibility to thermal and mechanical impacts.
Hirotaka Mutsuzaki   +4 more
doaj   +1 more source

Differential Healing Patterns of Mucosal Seal on Zirconia and Titanium Implant

open access: yesFrontiers in Physiology, 2019
Zirconia implants have become an alternative to titanium implants due to several advantages. The zirconia implant is relatively esthetic and highly resistant to bacteria.
Dong-Joon Lee   +6 more
doaj   +1 more source

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