Results 1 to 10 of about 7,176,130 (391)

Understanding the rebound surface hardness of concrete

open access: yesJournal of Civil Engineering and Management, 2015
Surface hardness testing of materials can be considered as the oldest method to get information about strength related material properties. In recent decades the rebound hammer has been the most popular surface hardness testing device for concrete ...
K. Szilágyi   +2 more
semanticscholar   +7 more sources

Effect of addition of titanium dioxide nanoparticles on the antimicrobial properties, surface roughness and surface hardness of polymethyl methacrylate: A Systematic Review. [PDF]

open access: yesF1000Res, 2023
Background: Polymethyl Methacrylate (PMMA) denture-base resins have poor surface properties that facilitates microbial adhesion causing denture stomatitis.
Kaurani P   +5 more
europepmc   +2 more sources

Evaluating the pH of Various Commercially Available Beverages in Pakistan: Impact of Highly Acidic Beverages on the Surface Hardness and Weight Loss of Human Teeth. [PDF]

open access: yesBiomimetics (Basel), 2022
The objectives of this study were to investigate the pH of common beverages and to evaluate the effects of common acidic beverages on the surface hardness and weight loss of human tooth specimens. A total of 106 beverages were conveniently purchased from
Kumar N   +9 more
europepmc   +2 more sources

Hardness distribution on wood surface [PDF]

open access: bronzeJournal of Wood Science, 2001
For better understanding wood hardness, we developed a new hand-operated hardness tester that works with Brinell's method. With this tester we investigated the hardness distribution of wood minutely using a 2mm diameter ball tip. The following results were obtained: (1) On preliminary examination with medium-density fiberboard, we found that the value ...
Seiji Hirata   +2 more
openalex   +3 more sources

Comparative Evaluation of the Effectiveness of Denture Cleansers on Surface Hardness of Permanent Silicone Denture Liners - An In vitro Study.

open access: yesJ Pharm Bioallied Sci, 2021
Aim: This study aimed to determine the effect of three commercially available denture cleansers on surface hardness of two different silicone denture liners at various time intervals.
Sameeh MA   +5 more
europepmc   +2 more sources

Effect of Two Methods of Remineralization and Resin Infiltration on Surface Hardness of Artificially Induced Enamel Lesions. [PDF]

open access: yesJ Dent (Shiraz), 2020
Statement of the Problem: The progression of incipient carious lesions may be simply prevented by non-invasive remineralization of lesions, eliminating the need for invasive and high-cost restorative procedures.
Behrouzi P   +4 more
europepmc   +2 more sources

The effect of preheating resin composites on surface hardness: a systematic review and meta-analysis. [PDF]

open access: yesRestor Dent Endod, 2019
Objectives This paper presents a systematic review and meta-analysis of the effect of preheating on the hardness of nanofilled, nanoceramic, nanohybrid, and microhybrid resin composites.
Elkaffas AA   +3 more
europepmc   +2 more sources

Keasaman minuman ringan menurunkan kekerasan permukaan gigi (Acidity of soft drink decrease the surface hardness of tooth)

open access: goldDental Journal, 2005
Acidity can bring about tooth erosion. A laboratory experiment about soft drink acidity to the hardness of tooth surface was done. The purpose of the study was to investigate the surface hardness of the tooth surface after immersion in some kinds of soft
Edhie Arif Prasetyo
openalex   +4 more sources

Effect of Novel Cycloaliphatic Comonomer on Surface Roughness and Surface Hardness of Heat-cure Denture Base Resin.

open access: yesJ Pharm Bioallied Sci, 2020
Background: Polymethyl methacrylate (PMMA) is a widely used resin in the field of prosthodontics for fabricating myriad orofacial prostheses. Albeit several advantages, it possesses certain lacunae concerning physicomechanical properties.
Ajay R   +5 more
europepmc   +2 more sources

Quantitative Prediction of Residual Stress, Surface Hardness, and Case Depth in Medium Carbon Steel Plate Based on Multifunctional Magnetic Testing Techniques. [PDF]

open access: yesSensors (Basel)
In this study, the methods of tangential magnetic field (TMF), magnetic Barkhausen noise (MBN), and incremental permeability (IP) were employed for in the simultaneous, quantitative prediction of target properties (bidirectional residual stress, surface ...
Xu C   +6 more
europepmc   +2 more sources

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