What is a favorable property of a dental material? … Hardened or set by a chemical reaction of two materials. What is galvanic?
What are the different properties of dental materials that may affect the application properties?
Include wetting, viscosity, surface characteristics, and film thickness.
What makes composite resin a more favorable restoration than amalgam?
What makes composite resin a more favorable restoration then an amalgam? Smaller cavity preparation is needed due to bonding. Porcelain is chosen as an indirect restorative material for which of the following reasons?
What constitutes an ideal dental restorative material?
An ideal restorative material should be biocompatible, resistant to fracture, demonstrate longevity, be affordable and easy to manipulate, even in a resourcestrained environment 4 .
What is IRM the restorative material of choice for?
IRM Intermediate Restorative material is designed for intermediate restorations intended to remain in place for up to one year. The eugenol content in the polymer-reinforced zinc oxide-eugenol composition gives the material sedative like qualities on hypersensitive tooth pulp and is a good thermal insulator as well.
What are the properties of material?
The important properties of material are:
- Physical properties: It includes luster, color, size and shape, density, elastic and thermal conductivity, and melting point.
- Chemical properties: It includes chemical composition, structure, etc.
- Mechanical properties:
What are the different electrical properties of a dental material?
ELECTRICAL PROPERTIES OF DENTAL MATERIALS 1) CONDUCTOR: A conductor is a material that allow the flow of electrical current in one or more directions. A metal wire is a common electrical conductor. 2) INSULATOR: The materials that offer high resistance to the flow of electric current. Are called insulators.
What is in dental composite?
The Material of Composite Fillings
They are made of a plastic substance called acrylic resin that is reinforced with powdered glass quartz, silica, or other ceramic particles. The mixture of these materials allows for a beautiful coloring that closely matches your natural tooth color.
What are the properties of composite resin materials and their application in restoring teeth?
Composite resins generally consist of a resin polymer matrix, inorganic filler, coupling reagent, coloring agent, and initiator . Three key properties of composite resins used in dental applications are mechanical, physical, and esthetic qualities all of which can be enhanced by silica.
What are the factors that affect how dental materials are manufactured for the oral cavity?
Dental materials are influenced in the oral cavity environment by: Chemical reactions – corrosion (hydrolysis, oxidation), polymer chain degradation/ scission with decrease in the polymer chain length), Mechanical failire – abrasion, attrition, fracture, fatigue, creep.
What are the qualities of a good dental restoration?
The material also would be strong enough to withstand occlusal forces, demonstrating high flexural strength, high fracture toughness, high compressive strength, and high tensile strength. It also would be biocompatible, color stable, and gentle to opposing dentition but not easily abraded.
What are the standards a dental material must meet?
Key requirements of materials for dentistry, especially those used in the mouth, include their being non- toxic, biocompatible, water resistant, and durable. In addition, many also need to be esthetic and wear- resistant.
What is dental IRM?
Zinc oxide-eugenol cement (IRM) is a low-strength base used as a temporary cement filling in the event that the patient will return at a later date for a semi-permanent restoration. The powder is mainly zinc oxide and the liquid is eugenol with olive oil as a plasticizer.
What is intermediate restorative material?
If you have a rather large cavity, you can remove the bulk of the decay and place an “IRM” filling (Intermediate Restorative), also known as a sedative filling. This will often slow or stop the progression of decay and help the patient feel better.
What type of restoration is made in the dental laboratory?
Indirect Restorative Dental Materials (Two or more visits)
Sometimes the best dental treatment for a tooth is to use a restoration that is made in a laboratory from a mold. These custom-made restorations, which require two or more visits, can be a crown, an inlay or an onlay.