Results 101 to 110 of about 11,980 (262)

The influence of endodontic access preparation on the mechanical strength of zirconia crowns: A literature review

open access: yesSaudi Endodontic Journal
As the use of monolithic zirconia crowns continues to increase in clinical practice, understanding the impact of post-cementation endodontic intervention is essential for long-term restorative success.
Abdulrahman Almalki
doaj   +1 more source

The study on wear and aging performance of polyetheretherketone, zirconia, and cobalt-chromium alloy crowns [PDF]

open access: yesKouqiang yixue
Objective To comparatively analyze the friction wear performance, fracture resistance, and displacement resistance before and after aging of full crowns made from PEEK, cobalt-chromium alloy, and zirconia, providing a theoretical basis for the future ...
YANG Shuo, LI Zhuoheng, ZHANG Huinan, GAO Jingzhe, SUN Yu
doaj   +1 more source

Analysis of Flexural Strength and Contact Pressure After Simulated Chairside Adjustment of Pressed Lithium Disilicate Glass-Ceramic [PDF]

open access: yes, 2018
Statement of problem Research evaluating load-to-failure of pressed lithium disilicate glass-ceramic (LDGC) with a clinically validated test after adjustment and repair procedures is scarce.
Berzins, David W.   +3 more
core   +1 more source

Mechanical behavior of single-layer ceramized zirconia abutments for dental implant prosthetic rehabilitation [PDF]

open access: yes, 2014
Objectives: This study was undertaken to characterize the mechanical response of bare (as-received) and single- layer ceramized zirconia abutments with both internal and external connections that have been developed to enhan - ced aesthetic ...
Bruguera Alvarez, August   +9 more
core   +1 more source

Clinical fractures of veneered zirconia single crowns.

open access: yesGeneral dentistry, 2016
Crowns made from an yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) core with a porcelain veneer have shown high clinical failure rates. Manifestations of clinical failure in veneering ceramic ranges from a single chip to an extended fracture. Core failures are uncommon but usually are catastrophic. This article examines the possible causes
De Almeida Jr., Antonio Alves   +3 more
openaire   +2 more sources

Effects of Substructure Color and Restoration Thickness on the Final Color of Ultra‐Translucent Zirconia Ceramics

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This in vitro study aimed to evaluate the effects of substructure color and restoration thickness on the final color of shade‐gradient ultra‐translucent zirconia ceramics. Material and Methods A total of 180 flat‐shaped ultra‐translucent zirconia specimens (5Y‐PSZ) with thicknesses of 0.4, 0.6, and 0.8 mm (n = 60) were fabricated and
Elif Yılmaz Biçer   +2 more
wiley   +1 more source

In vivo evaluation of the enamel wear of primary molar against four types of crowns using the intra-oral scanner

open access: yesBMC Oral Health
Background Primary tooth wear is a common phenomenon that affects chewing ability, dental sensitivity, aesthetics, and occlusion. This study was conducted to compare the antagonistic enamel wear of primary molars opposed to four different crown materials.
Diana Mohamed Amer   +1 more
doaj   +1 more source

Fracture resistance of porcelain veneered zirconia crowns with exposed lingual zirconia for anterior teeth after thermal cycling: An in vitro study

open access: yesSaudi Dental Journal, 2015
Statement of problem: In some clinical conditions minimally invasive complete crown tooth preparations are indicated. This is especially true when gross removal of tooth structure would weaken the remaining tooth or violate the vitality of the dental ...
Fatemeh A. Amir Rad   +2 more
doaj   +1 more source

A Method of Locating the Abutment Screw Access Channel with Cone-Beam Computed Tomography and a 3D-Printed Drilling Guide [PDF]

open access: yes, 2018
In managing loose abutment screws, locating precisely the position of the screw access channel is difficult. This technique describes the use of cone-beam computed tomography (CBCT) and surgical guide planning software to locate the screw access channel ...
Asiri, Waleed Nasir   +3 more
core   +1 more source

Tribo-corrosion of steel in artificial saliva [PDF]

open access: yes, 2014
Stainless steel is widely used as dental implant. However, there has been little work on the micro-abrasion of such materials in laboratory simulated oral environments, where abrasion, sliding wear can interact simultaneously.
Holmes, D., Sharifi, S., Stack, M. M.
core   +1 more source

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