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NEETMDS- Conservative Dentistry mcq
MDS PREP
The maximum amount of mercury vapour allowed in the workplace
1) 0.005 mg/meter cube
2) 0.0005 mg/meter cube
3) 0.05 mg/meter cube
4) 0.025 mg/meter cube
Conservative Dentistry Answer: 3

The main purpose of etching the enamel before placing composites
1) Increases the surface area 2000 times
2) To create surface irregularities to aid in mechanical interblocking
3) Allow proper adaptation and decrease marginal leakage
4) All of the above
Conservative Dentistry Answer: 4

Which of the following is not true about pin-retained amalgam restorations
1) Tooth preparation is conservative
2) Proper occlusal contacts can be achieved
3) Resistance is increased
4) Retention is increased
Conservative Dentistry Answer: 3

The method of choice to remove a distoocclusal onlay from a maxillary premolar
1) To use a substance that dissolves the cementing medium
2) Cutting the onlay with a round bur
3) Cutting at the isthumus region to remove it in two pieces
4) Use mallet and hammer to remove in one piece
Conservative Dentistry Answer: 3

In bitewing radiographs, occlusal pit caries of enamel appears as a
1) Circular radiolucent area
2) Triangular radiolucent area with its base towards the dentine-enamel junction
3) Vertical radiolucent line
4) None of the above
Conservative Dentistry Answer: 2

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

Filler used in composites is
1) Quartz
2) Colloidal silica
3) Aluminium
4) Glass
Conservative Dentistry Answer: 2

Back pressure porosity can be restified by
1) Vaccum investing the wax pattern
2) Decreasing the mould and casting temperature
3) Using proper technique of burn out temperature of casting pressure
4) All of the above
Conservative Dentistry Answer: 4

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