Results 11 to 20 of about 143,288 (296)

The Effect of Thermocycling and Surface Treatments on the Surface Roughness and Microhardness of Three Heat-Pressed Ceramics Systems

Crystals, 2020
Dental ceramic restorations are widely used in restorative dentistry. However, these restorations can be affected once cemented in the oral cavity by several factors.
Roxana-Diana Vasiliu, Sorin- Daniel Porojan, Mihaela- Ionela Bîrdeanu, Ion-Dragoș Uțu, Liliana Porojan   +4 more
doaj   +2 more sources

The Effects of Sodium Dichloroisocyanurate and Calcium Hydroxide as Intracanal Medicaments on Microhardness and Fracture Resistance of Dentin: An In Vitro Study [PDF]

Clinical and Experimental Dental Research
Objectives The aim of this study was to evaluate the effect of sodium dicholoroisocyanurate (NaDCC) as intracanal medicament on the dentin microhardness and fracture resistance of teeth compared to calcium hydroxide (CH). Material and Methods Root canals
Fereshte Sobhnamayan, Alireza Adl, Negin Firouzi, Saeed Moravej, Samina Gavahianjahromi   +4 more
doaj   +2 more sources

Effect of thermocycling on internal microhardness of high and low viscosity bulk fill composite resins in class I cavities [PDF]

RGO: Revista Gaúcha de Odontologia, 2023
Objective: To evaluate the effect of thermocycling on the Knoop internal microhardness of high- and low viscosity bulk fill resins applied in Class I cavities.
Sâmara Luciana de Andrade LIMA, Lais Lemos CABRAL, Natália Russo CARLOS, Saulo André de Andrade LIMA, Kamila Rosamilia KANTOVITZ, Flávia Lucisano Botelho do AMARAL   +5 more
doaj   +1 more source

Surface roughness, optical properties, and microhardness of additively and subtractively manufactured CAD‐CAM materials after brushing and coffee thermal cycling

Journal of Prosthodontics, 2023
Purpose To evaluate the surface roughness, optical properties, and microhardness of additively or subtractively manufactured CAD‐CAM materials after simulated brushing and coffee thermal cycling.
Gülce Çakmak, M. B. Donmez, Marcella Silva de Paula, C. Akay, Manrique Fonseca, Çiğdem Kahveci, S. Abou-Ayash, B. Yılmaz   +7 more
semanticscholar   +1 more source

Effect of Different Mouthwashes on the Surface Microhardness and Color Stability of Dental Nanohybrid Resin Composite

Polymers, 2023
Background: Surface microhardness and color stability of dental restorative material should be sustained throughout its functional lifetime to maintain the esthetic quality of the restoration.
Tamer M. Hamdy, Ali Abdelnabi, Maha S. Othman, Rania E. Bayoumi, Rasha M. Abdelraouf   +4 more
semanticscholar   +1 more source

Evaluation of Microhardness of Two Bulk-fill Composite Resins Compared to a Conventional Composite Resin on surface and in Different Depths

Journal of Dentistry, 2022
Statement of the Problem: One of the problems with light-cured composite resins is the limitation and inadequate depth of curing and polymerization, resulting in low surface microhardness and restoration failure.
Keyvan Saati , Sheida Khansari , Farnaz Mahdisiar , Sara Valizadeh   +3 more
doaj   +1 more source

Comparative studies of the strength properties of germanum and silicon single crystals

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2022
In this paper, we present the results of microhardness tests performed by Vickers indentation of germanium and silicon single crystals. It’s shown that in the investigated samples there is a dependence of microhardness on the crystallographic directions ...
A.I. Ivanova, P.A. Svesnikov, K.A. Marinicheva, K.A. Gugutsidze, A.D. Vasilev, S.A. Tretiakov, A.Yu. Karpenkov   +6 more
doaj   +1 more source

Long-term effect of acidic pH on the surface microhardness of ProRoot mineral trioxide aggregate, Biodentine, and total fill root repair material putty

Dental Research Journal, 2021
Background: The purpose of this study was to compare the microhardness values of ProRoot mineral trioxide aggregate (MTA), Biodentine, and total fill root repair material (TF-RRM) Putty at varying pH and times.
Koral Bayraktar, Fatima Betul Basturk, Dilek Turkaydin, Mahir Gunday   +3 more
doaj   +1 more source

Modelling and optimization of microhardness of electroless Ni–P–TiO2 composite coating based on machine learning approaches and RSM

, 2021
In this study, experimental investigations on the microhardness of the synthesized electroless Ni-P-TiO2 coated aluminium composite was carried out. The coated samples were characterized by scanning electron microscopy (SEM) for surface morphology and X ...
Imtiaz Ahmed Shozib, Azlan Ahmad, M. S. A. Rahaman, A. M. Abdul-Rani, Mohammad Azad Alam, M. Beheshti, I. Taufiqurrahman   +6 more
semanticscholar   +1 more source

Selective laser melting (SLM) of AISI 316L—impact of laser power, layer thickness, and hatch spacing on roughness, density, and microhardness at constant input energy density

The International Journal of Advanced Manufacturing Technology, 2020
In selective laser melting (SLM) the variation of process parameters significantly impacts the resulting workpiece characteristics. In this study, AISI 316L was manufactured by SLM with varying laser power, layer thickness, and hatch spacing. Contrary to
S. Greco, K. Gutzeit, H. Hotz, B. Kirsch, J. Aurich   +4 more
semanticscholar   +1 more source