Results 121 to 130 of about 24,480 (261)

Comparison of the Effects of CO2 Laser, Eggshell Nanoparticle Gel, and Their Combination on the Microhardness of Enamel White Spot Lesions [PDF]

Duaa Taher, dalia mahmoud abbas
openalex   +1 more source

Surface roughness and microhardness evaluation of composite resin restorations subjected to three different polishing systems immediately and after 24 h: An in vitro study

, 2023
Debkanya Chowdhury, Sayantan Mukherjee, Ipsita Maity, Paromita Mazumdar   +3 more
openalex   +1 more source

Effect of artificial aging and different surface finishing protocols on the flexural strength and surface hardness of a photopolymer for manufacturing monolithic polychromatic complete dentures using PolyJet 3D printing

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluated the effect of thermocycling and three different surface finishing protocols on the flexural strength and surface hardness of a novel photopolymer intended for manufacturing monolithic polychromatic dental prostheses using PolyJet 3D printing.
Francisco X. Azpiazu‐Flores, Ahmed Elfana, Chao‐Chieh Yang, Dean Morton, Wei‐Shao Lin   +4 more
wiley   +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

Effect of different irrigant solutions on microhardness and smear layer removal of root canal dentin

, 2014
Hebatalla E. Kandil, Ahmed Labib, Hatem A. Alhadainy   +2 more
openalex   +1 more source

Microshear Bond Strength of Composite Resin to Mineral Trioxide Aggregate and Potassium Nitrate‐Modified Polycarboxylate Cement at Two Time Points Using Different Adhesive Approaches: An In Vitro Study

Clinical and Experimental Dental Research, Volume 12, Issue 1, February 2026.
ABSTRACT Objectives This in vitro investigation evaluated the microshear bond strength (µSBS) of composite resin to mineral trioxide aggregate (MTA) and a modified polycarboxylate cement containing potassium nitrate (PCC/KNO3), both utilized as pulpotomy materials.
Alireza Adl, Zahra Jowkar, Mahdi Zerafat, Fereshte Sobhnamayan   +3 more
wiley   +1 more source

A comparative evaluation of the effect of three different concentrations of in-office bleaching agents on microhardness and surface roughness of enamel – An in vitro study

, 2021
Khushboo Goyal, SuparnaGanguly Saha, Anuj Bhardwaj, MainakKanti Saha, Kaustubh Bhapkar, Shrija Paradkar   +5 more
openalex   +1 more source

Damage Behavior of Ni‐B and Ni‐B‐TiO2 Coatings on AISI P20 Steel Under Indentation and Bending

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 2, Page 559-573, February 2026.
ABSTRACT This study examines the influence of TiO2 nanoparticles on the structure, mechanical properties, and fracture behavior of Ni‐B coatings applied to heat‐treated AISI P20 steel. Mechanical performance was assessed through indentation and step‐by‐step three‐point bending tests on both coated and uncoated substrates.
Amir Bahri, Mouna Kallel, Manel Ellouz, Khaled Elleuch, Thomas Kordisch   +4 more
wiley   +1 more source

The Effect of Irradiation Time and Distance on the Microhardness of Three Commercial Nanohybrid Resin-Based Composites

Frontiers in Biomedical Technologies, 2014
Purpose: The properties of resin-based composites as polymeric materials are related to the quality of polymerization. Microhardness measurement is an indirect method to predict this quality.
Tahereh Jafarzadeh-Kashi, Maryam Hajihasani, Soolmaz Heidari, Kimia Khoshroo, Reza Masaeli, Mohammadreza Tahriri   +5 more
doaj  

Tuning the microstructural and micro‐/nanomechanical properties of silicon nitride–carbon nanotube composites by powder oxidation

International Journal of Applied Ceramic Technology, Volume 23, Issue 1, February 2026.
Microstructure showing hexagonal α‐Si3N4 (green arrows) and CNTs distributed between beta‐Si3N4 (yellow arrows) and the oxidation impact to elastic moduli. Abstract The effects of the oxidation on the micro/nanohardness, density, and microstructure of the silicon nitride–carbon nanotube (Si3N4–CNT) composite were investigated.
Alaa Almansoori, Tamás Kolonits, Wasan Alkaron, Katalin Balázsi, Csaba Balázsi   +4 more
wiley   +1 more source