Results 81 to 90 of about 51,001 (235)
Is Cement a Glassy Material? [PDF]
arXiv, 2015 The nature of Calcium--Silicate--Hydrate (C--S--H), the binding phase of cement, remains a controversial question. In particular, contrary to the former crystalline model, it was recently proposed that its nanoscale structure was actually amorphous. To elucidate this issue, we analyzed the structure of a realistic simulation of C--S--H, and compared ...
arxiv
Maturation processes in glass-ionomer dental cements
Acta Biomaterialia Odontologica Scandinavica, 2018 Glass-ionomer cements are used for a variety of tooth-repair functions in clinical dentistry. They are formed by reaction of a basic glass powder with a solution of polymeric water-soluble acid, usually polyacrylic acid.
J. Nicholson
semanticscholar +1 more source
The application of Nano-silica gel in sealing well micro-annuli and cement channeling [PDF]
arXiv, 2023 The possibility for hydrocarbon fluids to migrate through debonded micro-annuli wells is a major concern in the petroleum industry. With effective permeability of 0.1-1.0 mD, the existence of channels in a cement annulus with apertures of 10-300 micrometer constitutes a major threat. Squeeze cement is typically difficult to repair channels-leakage with
arxiv
Antibacterial activity of selected glass ionomer cements.
Postępy Higieny i Medycyny Doświadczalnej, 2014 INTRODUCTION The aim of the paper was to determine the antibacterial activity of four glass ionomer cements against bacteria of the genera Streptococcus and Lactobacillus.
E. Luczaj-Cepowicz +4 more
semanticscholar +1 more source
European Journal of Dental Education, EarlyView.ABSTRACT Introduction Dental students are deemed fit to treat patients (clinical readiness) based on their performance in pre‐clinical summative assessments. This involves assessing knowledge (theory exams) and technical skills (simulation‐based activities).
Yasmina Andreani +5 more
wiley +1 more source
Romanian Journal of Oral Rehabilitation, 2014 Introduction. Glass-ionomer cements were described as being a hybrid between silicate cements and polycarboxylic ones. The evolution of glass-ionomer cements in the past decades has brought modifications both to the powder and the polycarboxylic acid ...
Irina Grădinaru +4 more
doaj
The Role of Chatbots in Enquiry‐Based Learning for Oral Health Students—An Exploratory Study
European Journal of Dental Education, EarlyView.ABSTRACT Objective This study explores the reliability of four Chatbots in enquiry‐based learning. Four Chatbots, namely Microsoft Copilot, Google Gemini, ChatGPT 3.5 and Perplexity, were used to answer and generate questions in four specific subject areas.
Rohini Khareedi, Daniel Fernandez
wiley +1 more source
Effects of dentin surface treatments on shear bond strength of glass-ionomer cements.
Annali di Stomatologia, 2014 AIM The aim of this in vitro study was to evaluate the effect of different surface treatments on shear bond strength of a conventional glass-ionomer cement (GIC) and a resin-modified glass-ionomer cement (RMGIC) to dentin.
C. Poggio +4 more
semanticscholar +1 more source
European Journal of Oral Sciences, EarlyView.Abstract This study aimed to evaluate the compressive and adhesive strengths of ceramic restorations (PICN and 5Y‐PSZ zirconia) cemented with one of three types of cements: conventional glass ionomer cement (GI), resin‐modified glass ionomer cement (RM‐GI), and self‐adhesive resin cement (R).
Letícia Moreschi +5 more
wiley +1 more source
A clinical evaluation of a glass ionomer cement as anorthodontic bonding adhesive compared with an acrylic resin [PDF]
, 1996 Lars Inge Norevall +2 more
openalex +3 more sources