Results 31 to 40 of about 272,347 (235)

In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia

Journal of Functional Biomaterials, 2023
To evaluate the fracture strength and the failure mode of endodontically treated molars restored with monolithic lithium disilicate and zirconia endocrowns and overlays. A total of 48 extracted mandibular molars were endodontically treated, decoronated 2
Maya Veselinova, Sofia Diamantopoulou, Chariklia Paximada, Efstratios Papazoglou   +3 more
doaj   +1 more source

Fabrication trueness and internal fit of different lithium disilicate ceramics according to post-milling firing and material type. [PDF]

OBJECTIVES To evaluate whether post-milling firing and material type affect the fabrication trueness and internal fit of lithium disilicate crowns. METHODS A prefabricated cobalt chromium abutment was digitized to design a mandibular right first
Demirel, Münir, Donmez, Mustafa Borga
core   +2 more sources

A comparative evaluation of the effect of liners on the shear bond strength of veneered zirconia block: An in vitro study

The Journal of Indian Prosthodontic Society, 2019
Aim: This study aims to evaluate the effect of lithium disilicate glass–ceramic liner, silicon dioxide based liner, and glass–ceramic interlayer on the shear bond strength (SBS) of a commercially available veneered zirconia block and to study ...
Pooja Yadav, Nupur Dabas, Sumit Singh Phukela, Puja Malhotra, Shefali Drall, Pankaj Kumar Ritwal   +5 more
doaj   +1 more source

Effect of different impression methods and ceramic materials on adaptation of inlays

Brazilian Dental Science, 2018
Objective: The aim of this study was to evaluate the internal and marginal adaptation of inlays fabricated from different types of impressions (conventional and digital) and different ceramics (feldspathic and lithium disilicate).
Marília Pivetta Rippe, Elen Guerra, Arianne Vallim Pinto Coelho, Lilian Costa Anami, Renata Marques de Melo Marinho, Marco Antonio Bottino, Luiz Felipe Valandro   +6 more
doaj   +1 more source

The effects of various scaling instruments on the surface roughness of monolithic zirconia and lithium disilicate

European Oral Research, 2023
Purpose: This in vitro study aims to evaluate the effects of plastic piezoelectric maintenance tips on the surface roughness of monolithic lithium disilicate and zirconia.Materials and Methods: Fifty-four lithium disilicate and 54 zirconia disks were ...
Mustafa Yılmaz, Esra Demir, Emin Orkun Olcay   +2 more
doaj   +1 more source

Optical properties of advanced lithium disilicate

Dental and Medical Problems
A variety of firing protocols are available for the IPS e.max lithium disilicate (LD) and can be used for new, 'advanced' LD (ALD). However, the impact of firing protocols on the optical properties of ALD is still unknown.The aim of the present study was to evaluate the color difference (ΔE00), the translucency parameter (TP00) and the whiteness index ...
Amanda Maria de Olveira Dal Piva, Hanna Verhoeff, Lucas Saldanha da Rosa, Gabriel Kalil Rocha Pereira, Cornelis Johannes Kleverlaan, João Paulo Mendes Tribst   +5 more
openaire   +2 more sources

The effects of ultrasonic cavitation on the dissolution of lithium disilicate glass

Scientific Reports, 2022
AbstractThere has been little research conducted on how ultrasonic cavitation may affect glass dissolution. The focus of this study was to examine how the mechanisms and kinetics of glass dissolution may change in a system that included ultrasonication. Experiments were conducted on lithium disilicate glass in deionized water at 50 °C between 1 and 7.5 
Dillinger, Ben, Suchicital, Carlos, Clark, David   +2 more
openaire   +4 more sources

From mystery to modulation: the structural story of Rb2[Si2O5]

Acta Crystallographica Section B, EarlyView.
The crystal structure of Rb2[Si2O5] has been solved and refined as an incommensurately modulated phase. Each [SiO4] tetrahedron of the phyllosilicate adopts one of two distinct orientations, and the positions of their constituent silicon and oxygen atoms are modeled using a combination of crenel and harmonic positional modulation functions.The crystal ...
Clivia Hejny, Volker Kahlenberg, Hannes Krüger   +2 more
wiley   +1 more source

Clinical Outcomes of Fixed Dental Prostheses Supported by Teeth or Implants in the Posterior Region—A Long‐Term Retrospective Multicenter Study

Clinical Oral Implants Research, EarlyView.
ABSTRACT Background Few long‐term studies compare tooth‐ and implant‐supported fixed dental prostheses (FDPs) in the posterior region. Objectives To compare the 5‐ and 10‐year survival and complication outcomes of tooth‐ and implant‐supported FDPs and to assess patient‐reported effects. Material and Methods This retrospective multicenter clinical study
Zahra Athab Abduljabbar, Lars Hjalmarsson, Victoria Franke Stenport, Jir Barzangi, Anders Magnuson, Alf Eliasson   +5 more
wiley   +1 more source

Fracture Resistance of CAD/CAM-Fabricated Zirconia and Lithium Disilicate Crowns with Different Margin Designs: Implications for Digital Dentistry

Journal of Functional Biomaterials
Objective: This in vitro study aimed to evaluate the influence of cervical margin design—tangential versus chamfer—on the fracture resistance of monolithic crowns fabricated from lithium disilicate and zirconia ceramics.
Tareq Hajaj, Diana Marian, Cristian Zaharia, Serban Talpos Niculescu, Radu Marcel Negru, Florina Titihazan, Mihai Rominu, Cosmin Sinescu, Andreea Codruta Novac, Gabriel Dobrota, Ioana Veja   +10 more
doaj   +1 more source