Results 51 to 60 of about 98,119 (208)

Evaluation of the mechanical properties of different materials for manufacturing occlusal splints

Brazilian Oral Research, 2023
This study aimed to compare the mechanical properties of various occlusal plate materials by analyzing surface roughness, Knoop microhardness, flexural strength, and modulus of elasticity.
Danielly Mendonça GUIMARAES, Marcio CAMPANER, Rodrigo Wendel dos SANTOS, Aldieris Alves PESQUEIRA, Rodrigo Antonio de MEDEIROS   +4 more
doaj   +1 more source

Dual resin cement knoop hardness after different activation modes through dental ceramics.

Brazilian Dental Journal, 2010
This study investigated the influence of ceramic compositions on Knoop Hardness Number (KHN) immediately and 24 h after polymerization and the effect of activation modes on the KHN of a resin cement.
T. A. Valentino, G. Borges, Luis Henrique Borges, J. Vishal, L. Martins, L. Correr-Sobrinho   +5 more
semanticscholar   +1 more source

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

Gel Containing Catechin and Mesoporous Silica Nanoparticles for Protecting Root Dentin Against Erosion: An In Situ Study

Microscopy Research and Technique, EarlyView.
Gels containing EGCG adsorbed on mesoporous silica nanoparticles have a protective effect against dentin erosion. ABSTRACT This study evaluated the in situ anti‐erosive effect of gels containing epigallocatechin‐3‐gallate (EGCG) isolated and adsorbed on mesoporous silica nanoparticles (EGCG/MSN) on eroded dentin.
Helaine Cajado Alves, Edison Augusto Balreira Gomes, Antonia Flavia Justino Uchoa, Nágila Maria Pontes Silva Ricardo, Vanara Florêncio Passos, Sérgio Lima Santiago   +5 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

Mechanical and elastic properties of new silicon nitride ceramics produced by cold isostatic pressing and free sintering [PDF]

, 2015
The mechanical and elastic properties of new silicon nitride fabricated by cold isostatic pressing and free sintering are considered. Young׳s modulus, Poisson׳s ratio and shear modulus of investigated ceramic were determined. An indentation technique for
Lukianova, O.
core   +1 more source

Wild meat consumption in changing rural landscapes of Indonesian Borneo

People and Nature, EarlyView.
Abstract Wild meat can play a crucial role in the food system of rural communities residing near tropical forests. Yet, socio‐ecological changes across tropical landscapes are impacting the patterns and sustainability of meat consumption. To understand the prevalence, frequency and drivers of wild meat, domestic meat and fish consumption in this ...
Katie L. Spencer, Daniel J. Ingram, Namrata B. Anirudh, Ardiantiono, Susan M. Cheyne, Leejiah J. Dorward, Abdul Kadir, Michaela G. Y. Lo, Courtney L. Morgans, Jatna Supriatna, Nurul L. Winarni, Freya A. V. St. John, Matthew J. Struebig   +12 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

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