MDS PREP

Mercuroscopic expansion in dental amalgam occurs when
1) Moisture contamination occurs during condensation of zinc containing amalgam
2) Moisture contamination occurs during truturation of zinc containing amalgam
3) Mercury released as a result of electrochemical corrosion re-reacts with Ag-Sn particle
4) Mercury released as a result of electrochemical corrosion re-reacts with Ag-Cu particle

Conservative Dentistry Answer: 3

For the balance of hand cutting instrument
1) Cutting edges of the working end should be centered over the long axis of the handle
2) It should have shorter, straighter shank
3) It should have solid handle
4) None of the above

Conservative Dentistry Answer: 1

Cavity preparation can be limited to proximal surface in class II cavities when
1. Caries is present below the contact point
2. Caries does not undermine enamel
3. Facial and lingual cavosurface margins can be placed in self-claening areas
4. All of the above

Conservative Dentistry Answer: 4

The main purpose of sealing the caries in deep cavities is
1) To allow secondary dentine deposition before complete excavation
2) To kill the bacteria deep in the carious lesion
3) To avoid removing the more tooth structure
4) All of the above

Conservative Dentistry Answer: 1

Restoration of angle fracture of anterior teeth can be done by
1) Amalgam
2) Composite resin
3) Glass ionomer cement
4) All of the above

Conservative Dentistry Answer: 2

Rotatory instrument that produce the roughest surface
1) Cross cut tapered fissure with high speed
2) Cross cut tapered fissure with low speed
3) Plain bur at high speeds
4) Plain round bur at low speeds

Conservative Dentistry Answer: 1

A reliable indicator of pulp death in nonvital teeth
1) Radiolucency at apex
2) Thermal tests
3) Electric tests
4) Transillumination tests

Conservative Dentistry Answer: 1

MDS PREP

For the balance of hand cutting instrument
1) Cutting edges of the working end should be centered over the long axis of the handle
2) It should have shorter, straighter shank
3) It should have solid handle
4) None of the above

Cavity preparation can be limited to proximal surface in class II cavities when
1. Caries is present below the contact point
2. Caries does not undermine enamel
3. Facial and lingual cavosurface margins can be placed in self-claening areas
4. All of the above

The main purpose of sealing the caries in deep cavities is
1) To allow secondary dentine deposition before complete excavation
2) To kill the bacteria deep in the carious lesion
3) To avoid removing the more tooth structure
4) All of the above

Restoration of angle fracture of anterior teeth can be done by
1) Amalgam
2) Composite resin
3) Glass ionomer cement
4) All of the above

Rotatory instrument that produce the roughest surface
1) Cross cut tapered fissure with high speed
2) Cross cut tapered fissure with low speed
3) Plain bur at high speeds
4) Plain round bur at low speeds

A reliable indicator of pulp death in nonvital teeth
1) Radiolucency at apex
2) Thermal tests
3) Electric tests
4) Transillumination tests

Commonly used solution for pulp vitality testing
1) Ethyl chloride
2) Ethyl alcohol
3) Methyl alcohol
4) Acetic acid

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MDS PREP

For the balance of hand cutting instrument1) Cutting edges of the working end should be centered over the long axis of the handle2) It should have shorter, straighter shank3) It should have solid handle4) None of the above

Cavity preparation can be limited to proximal surface in class II cavities when 1. Caries is present below the contact point 2. Caries does not undermine enamel 3. Facial and lingual cavosurface margins can be placed in self-claening areas 4. All of the above

The main purpose of sealing the caries in deep cavities is1) To allow secondary dentine deposition before complete excavation2) To kill the bacteria deep in the carious lesion3) To avoid removing the more tooth structure4) All of the above

Restoration of angle fracture of anterior teeth can be done by1) Amalgam2) Composite resin3) Glass ionomer cement4) All of the above

Rotatory instrument that produce the roughest surface1) Cross cut tapered fissure with high speed2) Cross cut tapered fissure with low speed3) Plain bur at high speeds4) Plain round bur at low speeds

A reliable indicator of pulp death in nonvital teeth1) Radiolucency at apex2) Thermal tests3) Electric tests4) Transillumination tests

Commonly used solution for pulp vitality testing1) Ethyl chloride2) Ethyl alcohol3) Methyl alcohol4) Acetic acid

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For the balance of hand cutting instrument
1) Cutting edges of the working end should be centered over the long axis of the handle
2) It should have shorter, straighter shank
3) It should have solid handle
4) None of the above

Cavity preparation can be limited to proximal surface in class II cavities when
1. Caries is present below the contact point
2. Caries does not undermine enamel
3. Facial and lingual cavosurface margins can be placed in self-claening areas
4. All of the above

The main purpose of sealing the caries in deep cavities is
1) To allow secondary dentine deposition before complete excavation
2) To kill the bacteria deep in the carious lesion
3) To avoid removing the more tooth structure
4) All of the above

Restoration of angle fracture of anterior teeth can be done by
1) Amalgam
2) Composite resin
3) Glass ionomer cement
4) All of the above

Rotatory instrument that produce the roughest surface
1) Cross cut tapered fissure with high speed
2) Cross cut tapered fissure with low speed
3) Plain bur at high speeds
4) Plain round bur at low speeds

A reliable indicator of pulp death in nonvital teeth
1) Radiolucency at apex
2) Thermal tests
3) Electric tests
4) Transillumination tests

Commonly used solution for pulp vitality testing
1) Ethyl chloride
2) Ethyl alcohol
3) Methyl alcohol
4) Acetic acid