Results 31 to 40 of about 7,059 (228)

Hydrolytic degradation of composite resins: effects on the microhardness

Materials Research, 2003
The purpose of this investigation was to evaluate the microhardness of two laboratory-processed composites (Artglass; belleGlass) and two direct placement composites (Filtek Z250; Alert), after aging in distilled water. Twenty cylinders (8 mm diameter; 2
Josué Martos, Prudêncio Willy Rodo Osinaga, Elisabeth de Oliveira, Luis Antônio Suita de Castro   +3 more
doaj   +1 more source

Influence of Cola-Based Soft Drinks on the Microhardness of Nanohybrid and Bulk Fill Composites [PDF]

Journal of Clinical and Diagnostic Research, 2019
Introduction: Bulk fill composites have been introduced in the past few years and appear to solve some of the disadvantages of conventional composites such as polymerisation contraction and the consequent marginal microinfiltration.
Luis Henrique Brugim, Jaisson Cenci, Priscilla Do Monte Ribeiro Busato, Mauro Carlos Agner Busato, Veridiana Camilotti, Marcio José Mendonça   +5 more
doaj   +1 more source

Crosslinked Gelatin‐Polycaprolactone Scaffolds: Balancing Biocompatibility and Inflammatory Response for Tissue Engineering Applications

Polymer Engineering &Science, EarlyView.
Crosslinked gelatin‐functionalized PCL scaffolds exhibited enhanced hydrophilicity, structural stability, and porous interactions. In vitro assays demonstrated improved osteoblast adhesion, viability, and proliferation without cytotoxicity, while in vivo evaluation showed no adverse inflammatory response, supporting their potential application in ...
Fernanda Ramírez‐Ruiz, Israel Núñez‐Tapia, Lucía Pérez‐Sánchez, María Cristina Piña‐Barba, Irving Sanchez‐Leal, Marco Antonio Alvarez‐Perez, Iriczalli Cruz‐Maya, Janeth Serrano‐Bello   +7 more
wiley   +1 more source

Knoop hardness of enamel and shear bond strength of brackets bonded with composite resin with and without fluoride Dureza Knoop do esmalte e resistência ao cisalhamento de braquetes colados com resina composta com e sem flúor

Dental Press Journal of Orthodontics, 2012
OBJECTIVE: The aim of this study was to evaluate the Knoop hardness of enamel, shear bond strength and failure pattern (adhesive, bracket/resin interface or mixed) after bonding and debonding brackets, using resin composite with fluoride (Ortho Lite Cure,
Silvia Amélia Scudeler Vedovello, Marcelo Grigoletto, Mário Vedovello Filho, Heloísa Cristina Valdrighi, Mayury Kuramae   +4 more
doaj   +1 more source

Can surface protection prevent the loss of hardness on dentin and composite resin surfaces exposed to erosive challenges?

Journal of Oral Research, 2020
Objective: This study investigated the effect of endogenous erosion on the microhardness of dentine and a nanofilled composite resin. Procedures for preventing erosion were also studied.
Patricia Akemi Nishitani Shibasaki, Janaina Emanuela Damasceno, Mariana Menezes Vaz de Queiroz, Max José Pimenta Lima, Roberto Paulo Correia de Araújo, Richard Mark Foxton, Andrea Nóbrega Cavalcant   +6 more
doaj   +1 more source

High‐Concentration Hydrogen Peroxide Gels Containing Calcium Polyphosphate Associated With Violet Led Light: Bleaching Efficacy and Effects on Enamel Properties

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To evaluate the effect of violet LED light (VL) and hydrogen peroxide (HP) in‐office bleaching gels supplemented with calcium polyphosphate (CaPP) or calcium gluconate (GU): Materials and Methods Bovine enamel blocks (n = 10) were randomly assigned: commercial HP gel, commercial HP gel with GU, or experimental 35% HP with or without
Hemanuelly Albuquerque dos Anjos, Débora Alves Nunes Leite Lima, Carolina Meneghin Barbosa, Klaus Rischka, Waldemir Francisco Vieira‐Junior   +4 more
wiley   +1 more source

In Vıvo Effects Of Orthocryl On The Remıneralızatıon Of Acıd-Softened Enamel

Turkish Journal of Orthodontics, 1992
In vivo effects of Orthocryl on acid-softened enamel are investigated. Demineralized enamel slabs are mountened in appliances and after control and treatment periods of one week the enamel specimens removed from the appliances and evaluated for ...
Seval Ölmez, Engin Usmen
doaj   +1 more source

Impact of light-curing distance on the effectiveness of cure of bulk-fill resin-based composites

Saudi Dental Journal, 2021
Objective: To investigate the effect of light-curing distance on the effectiveness of cure (EC) of bulk-fill resin-based composites (RBCs). Materials and methods: Two bulk-fill RBCs (a Tetric N-Ceram Bulk Fill (TN) and a Filtek Bulk Fill (FK)) are ...
Rana Abdelbaset Diab, Adrian Ujin Yap, Maria Angela Garcia Gonzalez, Noor Azlin Yahya   +3 more
doaj   +1 more source

In-vitro Untersuchung zum Vergleich von Polymerisationsverfahren anhand von Härteprofilen [PDF]

, 2005
Neben Halogen (HL)- und Plasmalampen werden LED-Lampen (LED) angeboten, die zur Polymerisation von Komposit geeignet sein sollen. Ziel der Untersuchung war es, Härteprofile von Prüfkörpern aus Komposit zu vergleichen.
Bärwald, Roland, Stachniss, Vitus (Prof. Dr.)   +1 more
core   +1 more source

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

Journal 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, Isaac Augusto Dantas Nogueira, Nicole Escórcio de Meneses, Ana Letícia Daniel Fontenele, Francisbênia Alves Silvestre, Ana Carolina Lima Moreira, Lívia Maria Sales Pinto Fiamengui, Karina Matthes de Freitas Pontes, Raniel Fernandes Peixoto   +8 more
wiley   +1 more source