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

13:29 EDT 31st July 2015 | 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 [23653 Associated PubMed Articles listed on BioPortfolio]

Osteoinductive Calcium Phosphate clay nanoparticle bone cements (CPCs) with enhanced mechanical properties.

Calcium Phosphate Cements (CPCs) with osteoconductive properties are limited in their applications because of their poor mechanical properties. This study investigated the additive effect of Dexametha...

Mechanical and physical behavior of newly developed functionally graded materials and composites of stainless steel 316L with calcium silicate and hydroxyapatite.

This study aimed to investigate the structural, physical and mechanical behavior of composites and functionally graded materials (FGMs) made of stainless steel (SS-316L)/hydroxyapatite (HA) and SS-316...

The effect of different mixing methods on the flow rate and compressive strength of mineral trioxide aggregate and calcium-enriched mixture.

Flow rate (FR) and compressive strength (CS) are important properties of endodontic biomaterials that may be affected by various mixing methods. The aim of this experimental study was to evaluate the ...

Glycerol salicylate-based containing α-tricalcium phosphate as a bioactive root canal sealer.

The use of bioactive materials instead of inert materials to fill the root canal space could be an effective approach to achieve a hermetic seal and stimulate the healing of periapical tissues. The pu...

Quantum Mechanical Rippling of a MoS_{2} Monolayer Controlled by Interlayer Bilayer Coupling.

Nanoscale corrugations are of great importance in determining the physical properties of two-dimensional crystals. However, the mechanical behavior of atomically thin films under strain is not fully u...

Clinical Trials [2912 Associated Clinical Trials listed on BioPortfolio]

Effectiveness of Photodynamic Therapy for Endodontic Treatment of Deciduous Teeth

The elimination of pathogenic microorganisms from the root canal system is one of the main points in order to have success in endodontic treatment. The objective of this study is to perfor...

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...

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.


Advertisement
 

Relevant Topics

Nutrition
Latest News Clinical Trials Research Drugs Reports Corporate
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...

Dermatology
Latest News Clinical Trials Research Drugs Reports Corporate
Acne Dermatology Eczema Psoriasis Wound Care Dermatology is the medical specialty concerned with the diagnosis and treatment of skin disorders (Oxford Medical Dictionary). As well as studying how the skin works, dermatology covers...

Advertisement
 

Searches Linking to this Article