Results 151 to 160 of about 3,270 (190)

In vitro cytotoxic response to lithium disilicate dental ceramics

Dental Materials, 2008
The use of lithium disilicate dental ceramics is increasing in dentistry and previous reports have suggested that they may have greater biological risks than previously thought. We tested a hypothesis that composition and processing influence the biological properties of these ceramics.The cytotoxicity of two machined and three pressed lithium ...
Brackett, Martha Goël, Lockwood, Petra E., Messer, Regina L W., Lewis, Jill B., Bouillaguet, Serge, Wataha, John C.   +5 more
openaire   +3 more sources

Comparison of the mechanical properties of translucent zirconia and lithium disilicate

The Journal of Prosthetic Dentistry, 2018
Three mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) possesses excellent mechanical properties but is relatively opaque. Five mol% yttria-stabilized zirconia polycrystal (5Y-ZP) offers improved translucency, but many of its clinical properties have not been compared with those of 3Y-TZP and lithium disilicate.The purpose of this in ...
Sung Joon Kwon, Nathaniel C. Lawson, Edward E. McLaren, Amir H. Nejat, John O. Burgess   +4 more
openaire   +2 more sources

An In Vitro Investigation Into the Wear Effects of Lithium Disilicate, Zirconia, and Zirconia Reinforced Lithium Disilicate Ceramic Materials on an Opposing Material

Journal of Esthetic and Restorative Dentistry
ABSTRACT Objective The aim of the present study was to evaluate the surface roughness and wear effect of three different ceramic materials. Materials and Methods Thirty ceramic discs (10/group ...
Majd Y. U'wais, Ahed Al‐Wahadni, Abedelmalek K. Tabnjh   +2 more
openaire   +2 more sources

WEAR OF LITHIUM DISILICATE OPPOSING ZIRCONIA, LITHIUM DISILICATE, AND PORCELAIN.

2023
Pranit Bora, Lawson, Nathaniel
openaire   +1 more source

Fracture Resistance of Lithium Disilicate and Advanced Lithium Disilicate Crowns Using Different Luting Cements: An In Vitro Study

International Journal of Chemical and Biochemical Sciences
This in vitro study aimed to evaluate and compare the fracture resistance of lithium disilicate crowns fabricated from two CAD/CAM ceramic materials—IPS e.max CAD (Ivoclar Vivadent) and CEREC Tessera™ (Dentsply Sirona)—cemented using two different luting agents: glass ionomer cement and dual-cure self-adhesive resin cement.
Khaled Hassan, Maged Mohammed Zohdy, Ahmed Khaled Aboelfadl   +2 more
openaire   +1 more source

TLD characteristic of glass, feldspathic and lithium disilicate ceramics

Luminescence, 2019
AbstractThermoluminescence (TL) emission of dental ceramics could be potentially used for retrospective dosimetry purposes as this allows a quick and reliable dose assessment in case of nuclear accident or bad use of a nuclear attack. This paper reports on the chemical and luminescence characterization of glass, feldspathic and lithium disilicate glass
Esme Isik, Huseyin Toktamis
openaire   +2 more sources

Er:YAG laser debonding of zirconia and lithium disilicate restorations

The Journal of Prosthetic Dentistry
Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) restorations of different formulations are being used increasingly in monolithic form for a range of clinical applications. Using rotary instruments to remove such restorations for any purpose is challenging, but they can be removed conservatively with erbium lasers.
Sama Suliman, Taiseer A. Sulaiman, Janina Golob Deeb, Awab Abdulmajeed, Aous Abdulmajeed, Timo Närhi   +5 more
openaire   +2 more sources

Physical aging of lithium disilicate glass

Journal of Non-Crystalline Solids, 2023
Ricardo F. Lancelotti, Thiago R. Cunha, Marcelo A.C. Kurtovic, Paulo S. Pizani, Sabyasachi Sen, Edgar D. Zanotto   +5 more
openaire   +1 more source

Controlling the microstructure and properties of lithium disilicate glass-ceramics by adjusting the content of MgO

Ceramics International, 2023
Fei Shi, Jingxiao Liu, Tianci Li
exaly  

Stepwise stress testing of different CAD/CAM lithium disilicate veneer application methods to lithium disilicate substructure

2019
Objective: CAD/CAM technology allows fabrication of thin lithium disilicate (LD) veneers to a LD crown substructure in place of using traditional feldspathic porcelain (FP) which has inferior mechanical properties. This project investigated the effect of different LD veneer applications to LD substructure on the biaxial flexural fatigue of LD veneer ...
openaire   +2 more sources