MCQs of Dental Materials – Restorative Resins

All of the following statements about the differences between self-polymerizing acrylic resins and heat-cured resins are true EXCEPT:

In heat cure denture base acrylic resins the monomer is:

If curing occurs at temperature more than 100°C porosity results in which area of denture

Which of the following is an example of a composite material?

Use of dimethyl-P-toluidine is indicated for:

Which of the following inhibitor accelerator system uses light activation composite?

Acrylic (cold cure)

Hydroquinone is added to methyl methacrylate monomer

Radio opacity to composite resins is rendered by:

Cross linking in denture base resin is contributed by:

The most important disadvantage of acrylic denture base is:

Porosity present in a acrylic denture is usually the result of:

Which of the following constituents is common in occlusal sealants, bonding agents, composite resins?

Acrylic resins are used for:

Marginal leakage related to temperature change occurs to the greatest extent with:

To prevent porosity in self-cure acrylic resin, curing should be carried in:

In self-cure acrylic resin, activator is:

The main advantage of composites over unfilled direct filling resin is their:

Composite resins in comparison to acrylic have:

Composite has

In processing methyl methacrylate, the resin may show porosity if the flask is placed too soon porosity most likely occur

Boiling point of methyl methacrylate:

Polymerisation of heat-cured methyl methacrylate is initiated by:

Which of the following is present in the powder of the acrylic resin:

Subsurface porosity is due to:

Light cure system, side effect is:

If resin is packed in sandy stage what will be seen in the processed denture?

Bonding of composite resins to tooth structure is by:

Which one of the following is used as filler in composite resins?

The type of spatula used to mix composite is:

The chemical used to etch enamel is:

Benzoin methyl ether in a polymer indicates that they may be cured in the presence of:

Which of the following procedure is indicated to produce cross-linking in the polymerization of linear chains of acrylic:

Which of the following may result if an excessive amount of monomer is incorporated into an acrylic resin mixture?

For photo-curing the composite resin the light source:

Porosity of denture base is due to:

The function of the coupling agent in a restorative resin is to allow

The imperfection seen on the lingual flange of a lower denture caused by rapid heating during a curing cycle is called:

No trail closure is necessary with which one of the technique during denture fabrication

The particle size in microfilled composites is

Acid-etching is done for:

A material which is a mixture of two different materials and its properties are:

The polymerization of self-curing resin takes faster in:

Co-efficient of thermal expansion is highest for:

Which of the following provide opacity to composite?

The latest method of curing denture base resins:

Dentin bonding agents usually contain:

One of the claims for the superiority composite resin restoration over silicate cement restorations is that the resin restorations:

The advantage of unfilled methyl methacrylate is that:

To cure a heat cure resin, a proper heating cycle is necessary:

About polymerization shrinkage of composite all are true, except:

When restoring a tooth with resin material, acid etching can do all of the following except:

Inorganic phase of the composites aid in:

For esthetic areas where high luster is required the restoration used usually

Inadequate pressure application during flasking:

Which of the following absorbs maximum amount of water?

The % of free monomer in a heat – cured acrylic resin is:

The restoration which shows percolation and shrinkage along the margins is:

What is the disadvantage of using composites as restorative material?

The commonly used laser for curing composite resin is:

Insufficient closure of the flasks during packing of denture base resin can result in:

What is the polymerization shrinkage if 3:1 powder: liquid ratio is used:

Acrylic resins were first introduced as a denture base material in:

Macromolecules in Dental Resin is attached by:

Quartz tungsten light cure device minimum output of energy should not be less than:

Along with polymerisation shrinkage, one of the major disadvantages of polymethyl methacrylate as denture base resin are its poor

Denture acrylics contain cross-linking agents mainly to improve their:

The most common coupling agents are organic silicon compound called:

The process wherein two or more chemically different monomers, each with some desirable property, can be combined to yield specific physical properties of a polymer is known as:

One bottle system of adhesive resins

Dentin conditioner has the following function:

Most advantageous indication of acid etching is:

Residual monomer content of chemically activated resins is:

VLC resins are also called as:

The accepted polymer to monomer ratio for packing of polymethyl methacrylate resin is:

Cold cure acrylic expand in water by:

Etching depth after 30 sec for orthodontic bracket with orthophosphoric acid is:

Which of the following is NOT true of polymethyl methacrylate?

During polymerisation of acrylic resin, above what temperature benzoyl peroxide form freeradicals:

Etchant preferred in gel from than in liquid form: