Results 81 to 90 of about 1,458,616 (285)

Composition of Dental Resin-Based Composites for Direct Restorations

open access: yes, 2017
Ever since the introduction of light-curable resin-based composites in the 1970s, these mixtures of organic and inorganic phases have continuously evolved to meet the increasing requirements of material design and dental practitioners. However, fundamentally, the chemistry of composite phases has not significantly changed, with material design that ...
Randolph, Luc   +2 more
openaire   +2 more sources

Astrocytes Coordinate Neurovascular Coupling During Prolonged Sensory Demand via AQP4/TRPA1/BEST1/D‐Serine Signaling

open access: yesAdvanced Science, EarlyView.
Neuronal activation leads to astrocytic transient volume changes, activating transient receptor potential ankyrin 1 (TRPA1) channels, leading to Ca2+ influx. Activation of TRPA1 causes the release of D‐serine through BEST1. Finally, the augmented extracellular levels of D‐serine boost neuronal activity by binding GluN1‐containing NMDARs, leading to CBV
Kayoung Han   +11 more
wiley   +1 more source

Color adjustment potential of resin composites

open access: yes, 2017
The purpose of this study was to evaluate color adjustment potential (CAP) of resin composites. Two shades of each of eight commercial resin composites and one control shade were evaluated.
Paravina, Rade D.   +5 more
core   +1 more source

Effects of dental composite resin monomers on dental pulp cells

open access: yesDental Materials Journal, 2019
Methacrylate monomers found in many dental materials cause toxicity to dental pulp cells but the mechanism of the toxicity is poorly understood. We used cultured human dental pulp cells to test the effects of three commonly used monomers; bisphenol-A-glycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA), and triethyleneglycol dimethacrylate ...
Schneider, Thomas R.   +4 more
openaire   +3 more sources

Restores Aβ Clearance by Overcoming PCSK9–LRP1 Dysregulation and TRIB3‐Mediated Autophagy Blockade in Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
PCSK9 upregulation in cerebrovascular endothelial cells and microglia destabilizes the Aβ transporter LRP1, while TRIB3‐associated autophagy blockade further limits intracellular Aβ degradation. A RAP‐modified tea‐polyphenol nanoparticle co‐delivers siPCSK9 and siTRIB3 to restore LRP1‐mediated Aβ efflux and autophagy‐dependent degradation, reducing Aβ ...
Jie Miao   +8 more
wiley   +1 more source

Neonatal Sevoflurane Exposure Induces Long‐Term Cognitive Impairment via Epigenetically Mediated MMP9 Activation and Perineuronal Net Disruption in the Hippocampal CA2

open access: yesAdvanced Science, EarlyView.
Hippocampal CA2 perineuronal nets ensheathing excitatory pyramidal neurons are selectively vulnerable to repeated neonatal sevoflurane exposure. Epigenetic upregulation of MMP9 via reduced H3K27me3 disrupts PNN integrity, impairs BDNF–TrkB signaling, and causes synaptic protein loss and dendritic spine deficits, leading to persistent social and spatial
Lirong Liang   +11 more
wiley   +1 more source

Bisphenol A Release from Dental Composites and Resin-Modified Glass Ionomers under Two Polymerization Conditions

open access: yes, 2021
Bisphenol A (BPA)-based monomers are commonly contained in dental resin-based materials. As BPA is an endocrine disruptor, its long-term release from restorative composites and resin-modified glass ionomers (RM-GICs) under two polymerization conditions ...
Marketa Simkova   +5 more
core   +1 more source

A novel bioactive nano-composite: synthesis and characterisation with potential use as dental restorative material [PDF]

open access: yes, 2009
PhDIt is desirable for a dental restorative material to have bioactive and bonding properties. This study focuses on the synthesis of a covalently-linked polyurethane/nanohydroxyapatite (PU/nHA) composite and evaluates its chemical, physical, thermal ...
Khan, Abdul Samad
core   +3 more sources

Effects of Silica Nanoparticles and Silica-Zirconia Nanoclusters on Tribological Properties of Dental Resin Composites

open access: yesJournal of Nanotechnology, 2018
Roughness and hardness are among the most important variables in the wear (resistance) performance of dental resin composites. In this study, silica nanoparticles and nanoclusters of silica and silica-zirconia nanoparticles were evaluated for use as ...
Henry A. Rodríguez, Herley Casanova
doaj   +1 more source

GLASS-IONOMER MODIFIKASI RESIN

open access: yesJournal of Dentistry Indonesia, 2015
Development of ideal dental materials to replace tooth tissue has been the objective of many researchers and manufacturers. Consequently, a wide range of dental materials with different chemical compositions, properties and recommendations on clinical ...
Bambang Irawan Sosrosoedirdjo
doaj   +1 more source

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