Results 61 to 70 of about 91,863 (168)

Flexural strength and hardness of direct and indirect composites

Brazilian Oral Research, 2009
The objective of this study was to evaluate the flexural strength (σf) and hardness (H) of direct and indirect composites, testing the hypotheses that direct resin composites produce higher σf and H values than indirect composites and that ...
Márcia Borba, Álvaro Della Bona, Dileta Cecchetti   +2 more
doaj   +1 more source

The hardness and chemical changes in demineralized primary dentin treated by fluoride and glass ionomer cement

Revista de Odontologia da UNESP
Background Fluoride plays an important role in the control of dental caries. Aim To evaluate the chemical exchange between restoration of glass ionomer cement of high viscosity (GIC) and primary dentin with application of sodium fluoride (NaF) 2 ...
Gisele Fernandes DIAS, Ana Cláudia Rodrigues CHIBINSKI, Fábio André dos SANTOS, Viviane HASS, Fabiana Bucholdz Teixeira ALVES, Denise Stadler WAMBIER   +5 more
doaj   +1 more source

Influence of polymeric matrix on the physical and chemical properties of experimental composites

Brazilian Oral Research, 2015
Nowadays, the main reasons for replacement of resin-based composite restorations are fracture or problems with the integrity of their interface, such as marginal staining, microleakage, or secondary caries.
Flávia GONÇALVES, Leticia Cristina Cidreira BOARO, Caroline Lumi MIYAZAKI, Yoshio KAWANO, Roberto Ruggiero BRAGA   +4 more
doaj   +1 more source

Improvement of mechanical and tribological properties in industrial tools by means of application of TiN/ZrN multilayer coatings

Revista Facultad de Ingeniería Universidad de Antioquia, 2010
Most of the hard coatings have good wear and corrosion resistance; they have been widely used commercially to increase the life span of some industrial elements, for example, cutting tools, sprockets, bearings and components for industrial machinery. In
Maryory Astrid Gómez, Gilberto Bejarano Gaitán, Jaime Alberto Osorio   +2 more
doaj  

Influence of niobium pentoxide addition on the properties of glass ionomer cements

Acta Biomaterialia Odontologica Scandinavica, 2016
Objective: To determine the influence of niobium pentoxide (Nb2O5) addition on the physical and chemical properties of glass ionomer cements (GICs). Materials and methods: Five, 10 or 20 wt.% of Nb2O5 were incorporated into commercial GICs (Maxxion R ...
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Gabriela De Souza Balbinot, Susana Maria Werner Samuel, Fabrício Mezzomo Collares   +4 more
doaj   +1 more source

Hardness and Surface Detail Reproduction of Gypsum Casts Retrieved from Addition Silicone Impressions Disinfected for Different Time Points

Journal of Islamic Dental Association of Iran, 2017
Background and Aim: Bacterial colonization occurs following contamination of impression materials with blood and saliva. However, not all disinfecting agents are compatible with the impression materials and may cause changes in the resultant casts.
Sara Koosha, Shabnam Pourhaghani, Kimia Attar   +2 more
doaj  

Erosive Potential of Cola-Type Soft Drinks on the Surface of Restorative Materials: In Vitro Study

Pesquisa Brasileira em Odontopediatria e Clínica Integrada
Objective: To evaluate the Knoop hardness of two types of glass ionomer cement - VitroMolar (VM) and Riva Self Cure (RSC), as well as the composite resin Z350 (CR), when exposed to two Cola-type soft drinks.
Marília Gabriela Corrêa Momesso, Kelly Maria Silva Moreira, Renata Cristiane da Silva, Júlia Vitório Octaviani, José Carlos Pettorossi Imparato   +4 more
doaj  

Evaluation of ability of dentifrices to remineralize artificial caries-like lesions

Dental Research Journal, 2010
Background: Human endeavors to prevent dental caries have led to the use of different modalities and agents, the most commonly used of which is fluoridated dentifrice.
Satyawan Gangaramji Damle, Vikas Bengude, Sheeba Saini   +2 more
doaj  

Effect of Ageing on the Mechanical Properties of Dental Resin with and Without Bisphenol A. [PDF]

Materials (Basel)
Lopes-Rocha L, Torres O, Garcez J, Carbas RJC, Borges C, Gonçalves VMF, Tiritan ME, Medeiros IS, Pinho T, da Silva LFM.   +9 more
europepmc   +1 more source

Effect of Graphene Oxide Quantities on Microhardness of Cured-Surface Coating Agents. [PDF]

Polymers (Basel)
Lebkrut K, Klaisiri A, Swasdison S, Thamrongananskul N, Thompho S, Sriamporn T.   +5 more
europepmc   +1 more source