Results 61 to 70 of about 650,590 (178)

Effects of gastric acid on surface roughness, microhardness, fracture strength, and color change of dental ceramics: A systematic review of in vitro studies

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose This systematic review evaluated the effects of simulated gastric acid (SGA) on surface and mechanical properties of dental ceramics to answer the research question: Does immersion in SGA alter the surface roughness, microhardness, fracture strength, and color of dental ceramics?
Geany Ferreira Rodrigues   +8 more
wiley   +1 more source

An Experimental Study of Ceramic Dental Porcelain Materials Using a 3D Print (3DP) Process [PDF]

open access: yes, 2014
Dental porcelain materials have been used widely in dental restorations such as crowns, veneers and onlays. In this study, a commercial dental-grade porcelain powder (IPS InLine Dentin) was investigated for compatibility with 3D printing.
Zandinejad, Amir Ali   +5 more
core  

Spectral Studies of New Luminophors for Dental Porcelain

open access: yes, 1980
Luminescence spectra of several non-radioactive luminophors that may be suitable for dental porcelain have been obtained. It was found that porcelain composition and maturation temperature have large effects on excitation and emission spectra.
J.B. Moser, W.T. Wozniak, D.R. Peplinski
core   +1 more source

Effect of Opaque Porcelain Thickness Bond Strength of Porcelain to Ni-Cr Alloys

open access: yesJournal of Dental School, 2019
Objectives: Metal-ceramic restorations are the standard by which all esthetic restorations are measured. Fracture of dental restorations is a multifactorial problem, which is serious and costly. Debonding of porcelain from the metal substructure and the
Alireza Hadi   +2 more
doaj   +1 more source

Comparison of surface treatment protocols for a 3D‐printable resin for definitive crowns: Effects on surface roughness and bonding performance

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose This study aimed to compare the effects of surface treatment protocols on the surface roughness and shear bond strength (SBS) of a three‐dimensional (3D)‐printable resin for definitive crowns. Materials and Methods A 3D‐printable resin for definitive crowns (Saremco Print Crowntec) was used to produce 168 specimens (10 × 10 × 2 mm3 ...
Engin Sacu   +5 more
wiley   +1 more source

Firing temperature accuracy of four dental furnaces

open access: yes, 2011
In spite of using recommended firing and displayed temperatures, low-fired dental porcelain more often demonstrates unsatisfactory results after firing than porcelain fired at higher temperatures. It could therefore be anticipated that temperatures shown
Dérand, Tore, Haag, Per, Ciber, Edina
core   +1 more source

Chemical Stability of Bioglass in Simulated Oral Environment

open access: yesJournal of Dental Biomaterial, 2016
Statement of Problem: Bioglasses are a series of biocompatible dental materials, which are considered as light conducting inserts in resin composite restorations.
Moazzami SM   +6 more
doaj  

Evaluating the Frequency of Implant-Supported Fixed Prosthesis Complications in Yazd Dental School in 2020

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd, 2022
Introduction: Evaluating the frequency of complications in implant supported prosthesis such as screw loosening and porcelain fracture is important for prevention and management of these problems.
Mahnaz Hatami   +2 more
doaj  

Effectiveness of plasma‐enhanced chemical vapor film in surface treatments of resin‐matrix ceramics to preserve optical characteristics after different aging processes

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose The aim of this study was to evaluate the surface roughness and optical characteristics of three ceramics with resin matrix for computer‐aided design and computer‐aided manufacturing, after different surface treatment protocols associated or not with the application of film deposition by plasma‐enhanced chemical vapor deposition (PECVD)
Victor Alves Nascimento   +6 more
wiley   +1 more source

Masking Power of Dental Opaque Porcelains [PDF]

open access: yes, 1984
A technique was developed to qualify the masking power of undiluted opaque dental porcelain by dilution of opaque powder with a clear glaze powder and by extrapolation of quantitative data gathered by reflectance spectrophotometry.
W.J. O'Brien   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy