Biomaterial Test

Main disadvantage of denture base soft reliner is 😕

Which of the following occurs when dental amalgam is overmixed ?

The light-cured restorative resins have advantages over chemically activated restorative resins as 😕

Acrylic resins are used in which of the following ?

Binder in the phosphate investment is 😕

Full denture bases are usually made from which of the following materials ?

Alginate impression material deteriorates rapidly at 😕

When the gold content of gold alloys increases 😕

Montan waxes have the following properties except 😕

A full crown on a maxillary anterior tooth may be restored with which of the following restorative materials ?

For luting purpose, the film thickness should be 😕

Property which distinguishes composites from filled acrylic resins 😕

The common characteristic for pit and fissure sealant composite resins, acrylic appliances and elastomeric impression materials is :

Wrought metal 😕

Which of the following materials are used for dental implants ?

Porosity in denture base resins can be due to 😕

Which of the following office conditions minimize the health hazard from spilled mercury ?

Carnauba wax is preferred to candelilla wax as 😕

Which of the following properties would be of least importance, when selecting an impression material ?

Stearic acid in impression compound 😕

Excess composite from the labial surfaces can be removed by using 😕

Commonly used filler in composite is 😕

Nickel sensitivity in the general population is 😕

Which of the following initiator-accelerator systems is needed for a light-activated composite?

The most commonly employed alloy combination for use in implants is 😕

For proper wetting, contact angle should be ideally 😕

An anterior fixed partial denture could have facings constructed of which of the following materials ?

Hypersensitivity reactions like contact dermatitis is caused by 😕

Commonly used coloring agent in impression plaster is 😕

Light source in the curing unit is usually 😕

Proportional limit is defined as :

The temperature at which a solid changes into liquid is called 😕

Which of the following metals currently are used in dental alloys ?

Conventional dental amalgam alloy contains 😕

The main use of zinc oxide eugenol cement is 😕

In a porcelain fused to metal restoration, the porcelain is-bonded to metal by 😕

Adhesion in composites is due to 😕

The constituent that acts as a binder in the investment is 😕

The reason for hydroxyapatite coating on implant biomaterials is 😕

Following are the functions of impression compound except 😕

The tendency of stainless steel to break under repeated condition of cyclic stressing below the ultimate strength is 😕

Which of the composites with the following fillers may be radiopaque ?

Noble metal alloys are classified according to their 😕

Proconditioning before GIC restoration is done in order to 😕

Which of the following properties of calcium hydroxide cement help in the formation of reparative dentin ?

Stiffness of the material with passage of time is maximum in 😕

Cobalt-chromium alloy is mostly used for the construction of 😕

In alginate impression the final gel is 😕

Which of the following sentences describes the construction of removable partial dentures ?

The gelation temperature of agar hydrocolloid impression material should be 😕

For each property, list the amalgam type (irregular low-copper, admixed high-copper, and spherical high-copper ) that has the highest value?.

One of the disadvantages of using quartz as filler in restorative resin is 😕

Dental porcelains are manufactured by a process termed as 😕

The energy absorbed by a material when it is stressed to its proportional limit is 😕

Which one of the following represents the maximum safe concentration of mercury vapor in the breathing zone for a 40-hour work week ?

Which one of the following mixing methods permits the escape of dental amalgam mercury vapor ?

Dispensing composite resins using a syringe is advantageous because it 😕

The physical properties most desirable in set amalgam are which of the following ?

Dental personnel can do which one of the following to limit their exposure to mercury ?

Compared to lathe-cut alloy, spherical dental amalgam alloys 😕