MCQs of Dental Materials – Impression Materials

The Zinc oxide-eugenol impression pastes harden by:

4th state of matter is:

All of the following statements about Type II silicon impression material are true EXCEPT:

All of the following statements about an alginate impression are EXCEPT:

All of the following can be used to slow down the setting of Zinc oxide eugenol impression paste EXCEPT:

Type I and Type II zinc oxide impression paste differ with respect to:

Hysteresis in a hydrocolloid gel is:

The term given to the phenomenon of moisture absorption by an alginate impression in:

The base paste of the condensation poly sillicone has a low molecular weight dimethyl siloxane with a terminal-group

The impression with the least dimensional change upon disinfection is:

Best material for duplicating cast is:

Palladium is added to polyvinyl siloxane to:

Syneresis seen in hydrocolloid gel is:

Immediate pouring of impressions is most critical in:

Impression techniques are used for recording

The impression material used to record the prepared areas on abutment teeth is:

Vulcanization refers to the setting of:

Alginate impression material is

Impression plaster is:

Syringe material is:

Setting time of ZOE is best controlled by:

The impression for a diagnostic cast of a partial edentulous mouth should be taken in:

Sol – gel transformation is seen in:

Agar impression materials differ from alginate impression materials in that the former sets by:

The basic constituent of reversible hydrocolloid impression material is:

Which material undergoes hysteresis?

Before pouring an elastic impression it is washed with slurry of water and stone to:

The setting time of irreversible hydrocolloids can be decreased by:

Which material is the most difficult to remove from the patients mouth?

Rubber base impressions are poured immediately as they:

Heavy and light body impression materials are use with:

The most mucostatic impression material is:

Impression compound has which of the following characteristic property?

The best way to remove a hydrocolloid impression from the patient’s mouth is:

Agar syringe material can be used with/as

Palatal secretions affect the setting of all the impression materials except:

Trisodium phosphate added to alginate contributes towards

Lenolin is added is ZOE paste to:

Tear strength for impression material is highest for:

Agar is prepared from

Elastomers are:

Perforated impression tray are used for:

The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is:

During setting of alginate impression materials

Which of the following impression material is elastic:

K₂SO₄ in agar-agar is for:

Trisodium phosphate in alginate acts are:

Wash or corrective impression is done by:

Hypersensitivity reactions like contact dermatitis can be caused by:

The plasticizers used in polyether impression material is:

Impression compound base

In reversible hydrocolloid the property by which the transformation from sol to gel and gel to sol is a function of the:

One of the most important advantages of truly elastic impression material would be its capacity for:

Alginates are

Inelastic impression material is:

Syneresis is associated with:

Masterial causing minimum tissue distortion is:

The advantage of ZOE impression paste

Brush heap structure is found in:

Rinsing of the impression is important to:

Gelation temparature of agar is between

Which is best material for RPD impression

Alginate impression material is similar to Agar-agar impression material in the following respect:

Which of the following is not affected by saliva?

Hardening solutions are used with impression made of:

Retarder in Zinc oxide eugenol is:

Elastomers except: Polyether are:

The cross linking agent of polysulphide rubber base impression material is:

Which of the following impression material is rigid?

When making a polysulphide impression for a caste crown, custom trays are usually preferred over stock trays for all of the following reasons except:

Rapid removal of rubber impression with a single firm motion results in:

Name the accelerator used in Zinc oxide eugenol paste

Impression compound is characterized by all of the following except:

The low thermal conductivity of impression compound is overcome by:

Which of the following is not true about elastomeric impression?

Linear contraction of elostomeric impression with passage of time is highest in:

The process of changing the rubber base product or liquid polymer, to a rubber like material is generally known as:

Which of the following is true about Agar hydrocolloid impression material?

Alginates are made dust free by adding:

Which one of the following increase the strength and reduce viscosity of agar hydrocolloid impression material:

The role of magnesium chloride in zinc oxide eugenol impression paste:

The water powder ratio of alginate is:

To make the vinyl Polysiloxane hydrophilic the following is added:

Best impression material to be used for securing impression after crown preparation:

Dimensional stability of hydrocolloid impressions may be achieved by:

Dimension stability of hydrocollids may be achieved by:

Which of the following is correct regarding chemical setting of condensation silicone:

Which of the following is correct glass transition temperature of Impression compound?

Which of the following is used as surface hardener in Impression material?

Rough and irregular surface produced on the impression is because of:

Which of the following best describes the working time of impression material?

Minimum flow of Type-I impression compound at mouth temperature is:

Which of the following is correct arrangement of impression material regarding linear contraction in ascending order?

Polysulfide material is routinely not recommended because of:

Disadvantage of polysulphide as impression material:

Hydrocolloid material, show all except:

Most flexible impression material

Impression material that Do NOT harden by chemical reaction:

A laminate impression technique utilizes:

Putty wash technique

Dimensional stability of elastomeric impression material can be given in descending order as:

What is the minimum thickness of the elastomeric impression material for an accurate impression

Which of the following component acts as an accelerator in ZOE impression paste?

The relative hardness of elastomere is determined using:

By product of condensation reaction between silicone base and alkyl silicate in presence of tin octate

Rough surface of elastomeric impression results from:

Which of the following impression material requires a hardener?

Most rigid elastomer is:

Most mucostatic among the following

Most ideally elastic among the following

The ranking of tear strength from the lowest to highest of all impression materials generally is as follows

Which one of the following impression materials is elastic, sets by a chemical reaction and is catalyzed by chloroplatinic acid:

The impression materials with lowest viscosity is:

Which of the following best describes the working time of elastomeric impression material?

Rough and irregular surface produced on the impression is because of?

Final product in alginate is:

Which of the following impression materials is easy to pour and difficult to remove the stone cast from the impression?

Dustless alginate is produced by:

A technique of combining reversible and irreversible hydrocolloid that could bond to irreversible hydrocolloid is known as:

Two in one stage impression materials include