Advertisement
Advertise here Publish your press releases here Sponsor BioPortfolio
Follow us on Twitter Sign up for daily news and research emails Contributors wanted

Chemical, physical and mechanical properties of a novel calcium aluminate endodontic cement.

01:03 EDT 30th July 2014 | BioPortfolio

Summary of "Chemical, physical and mechanical properties of a novel calcium aluminate endodontic cement."

Oliveira IR, Pandolfelli VC, Jacobovitz M. Chemical, physical and mechanical properties of a novel calcium aluminate endodontic cement. International Endodontic Journal. Abstract Aim To evaluate the influence of additives on several physical and chemical properties of a novel endodontic cement based on calcium aluminate in comparison with mineral trioxide aggregate (MTA). Methodology Manipulation tests, measurements of temperature, pH, ionic conductivity, compressive strength, apparent porosity, and pore size distribution were carried out on Gray-MTA (Angelus) and calcium aluminate cement (Secar-71, Kerneos) with and without various additives: a polymeric dispersant, CaCl(2) as plasticizer, and ZnO as radiopacifier. Results The calcium aluminate cement without additives had a setting time of approximately 60 min, and when combined with Li(2)CO(3) it decreased to 10 min. The material also released Ca(2+) ions and alkalinized the medium. Moreover, the addition of additives (dispersant, plasticizer, and radiopacifier) improved its properties resulting in a material with a viscosity of 57 mPa s, enhanced handling properties, a mechanical strength of 81 MPa, a porosity of 4% and pores with small diameter (0.25 mum). MTA had no temperature increase (that indicates setting) up to 400 min, a mechanical strength of 34 MPa, and porosity of 28% with pores 2.5 mum in diameter. Conclusion The novel cement set more rapidly, had better fluidity, improved handling properties, higher mechanical strength, and reduced porosity with lower pore size compared to Gray-MTA Angelus.

Affiliation

Institute for Research and Development, University of Vale do Paraiba, São José dos Campos, SP.

Journal Details

This article was published in the following journal.

Name: International endodontic journal
ISSN: 1365-2591
Pages:

Links

PubMed Articles [19580 Associated PubMed Articles listed on BioPortfolio]

Extraoral Retrograde Root Canal Filling of an Orthodontic-induced External Root Resorption Using CEM Cement.

Inflammatory external root resorption (IERR) after orthodontic treatments is an unusual complication. This case report describes a non-vital maxillary premolar with symptomatic extensive IERR (with a...

Immature Permanent Teeth With Apical Periodontitis and Abscess Treated by Regenerative Endodontic Treatment Using Calcium Hydroxide and MTA: A Report of Two Cases.

Regenerative endodontic techniques have been introduced to overcome the limits of the traditional apexification approach and allow continued root development after treatment of infected immature perma...

High bulk modulus of ionic liquid and effects on performance of hydraulic system.

Over recent years ionic liquids have gained in importance, causing a growing number of scientists and engineers to investigate possible applications for these liquids because of their unique physical...

Cytotoxicity and physical properties of tricalcium silicate-based endodontic materials.

The aim of this study was to evaluate the cytotoxicity, setting time and compressive strength of MTA and two novel tricalcium silicate-based endodontic materials, Bioaggregate (BA) and Biodentine (BD)...

Interval Prediction of Molecular Properties in Parametrized Quantum Chemistry.

The accurate evaluation of molecular properties lies at the core of predictive physical models. Most reliable quantum-chemical calculations are limited to smaller molecular systems while purely empiri...

Clinical Trials [2425 Associated Clinical Trials listed on BioPortfolio]

Measurement of Mechanical Properties of the Healing Achilles Tendon With or Without Early Weightbearing

The purpose of this study is to measure the mechanical properties of healing Achilles tendons in humans after early controlled weightbearing, compared with a control group in a randomized,...

The Effect of Different Types of Dietary Fiber on Satiation

It has been suggested that dietary fibers can affect food intake and satiation. Satiation, or meal termination, can be induced by sensory properties and energy density of fiber-rich food p...

Physical Activity, Calcium, and Bone in Children

Doctors recommend that young children participate in daily physical activity to promote bone health. However, studies in adults show that physical activity and increased calcium intake cau...

Safety and Efficacy of the Apexum Ablator

The study is designed to test the hypothesis that there is a difference in healing kinetics and healing rate between teeth treated by conventional endodontic procedure alone and those in w...

Skeletal Muscle Properties and the Metabolic Cost of Walking Post-stroke

Of the ~700,000 persons who suffer a stroke each year, only 50% recover the ability to perform unlimited community walking. One mechanism contributing to locomotor dysfunction post-stroke...

Medical and Biotech [MESH] Definitions

Substances used in biomedicine or dentistry predominantly for their physical, as opposed to chemical, properties.

The study of the physical and chemical properties of a drug and its dosage form as related to the onset, duration, and intensity of its action.

A genus of HALOBACTERIACEAE which are chemoorganotrophic and strictly aerobic. They have been isolated from multiple hypersaline environments that vary widely in chemical and physical properties.

A medical specialty concerned with the use of physical agents, mechanical apparatus, and manipulation in rehabilitating physically diseased or injured patients.

A fluorescent calcium chelating agent which is used to study intracellular calcium in many tissues. The fluorescent and chelating properties of Fura-2 aid in the quantitation of endothelial cell injury, in monitoring ATP-dependent calcium uptake by membrane vesicles, and in the determination of the relationship between cytoplasmic free calcium and oxidase activation in rat neutrophils.

Search BioPortfolio: