MDS PREP

Radiation caries is caused by irradiation of
1) Salivary glands
2) Enamel
3) Enamel and dentin
4) Oral mucosa

Radiology Answer: 1

Speed at which electron travel in gas tube once released from cathode filament is dependent on
1) Potential difference between electrodes
2) Angle between filament and anoxic target
3) Amount of kilovoltage applied to the circuit
4) Intensity of current applied to target

Radiology Answer: 1

The region which is closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periodical radiographs is
1) Maxillary premolar view
2) Mandibular premolar view
3) Maxillary molar view
4) Mandubular molar view

Radiology Answer: 4

Radiographically, the normal horizontal plane of alveolar bone interdentally is related to
1. Cementoenamel junction of adjacent teeth
2. Epithelial attachement of adjacent teeth
3. Trabecular pattern of bone
4. All of the above

Radiology Answer: 1

All of the following statements about an intraoral dental X-ray film are true except
1) It is composed of a cellulose acetate base coated with a silver bromide emulsion
2) It has a thin sheet of lead foil that lies in front of the film to prevent overexposure
3) It has an embossed dot on it which should be orientated towards the source of X-rays
4) It is exposed by the direct action of X-rays on the emulsion

Radiology Answer: 2

Smooth surface enamel caries appear on radiographs
1) Radiopaque saucer shaped
2) Radiolucent saucer shaped
3) Mixed radiopaque and radiolucent
4) No radiographic changes

Radiology Answer: 2

Unit of measurements to compare radiation damage
1) Exposure
2) Dose
3) Effective dose
4) Dose equivalent

Radiology Answer: 4

MDS PREP

Radiation caries is caused by irradiation of
1) Salivary glands
2) Enamel
3) Enamel and dentin
4) Oral mucosa

Speed at which electron travel in gas tube once released from cathode filament is dependent on
1) Potential difference between electrodes
2) Angle between filament and anoxic target
3) Amount of kilovoltage applied to the circuit
4) Intensity of current applied to target

The region which is closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periodical radiographs is
1) Maxillary premolar view
2) Mandibular premolar view
3) Maxillary molar view
4) Mandubular molar view

Radiographically, the normal horizontal plane of alveolar bone interdentally is related to
1. Cementoenamel junction of adjacent teeth
2. Epithelial attachement of adjacent teeth
3. Trabecular pattern of bone
4. All of the above

Smooth surface enamel caries appear on radiographs
1) Radiopaque saucer shaped
2) Radiolucent saucer shaped
3) Mixed radiopaque and radiolucent
4) No radiographic changes

Unit of measurements to compare radiation damage
1) Exposure
2) Dose
3) Effective dose
4) Dose equivalent

Density of radiograph is independent of
1) Milliamperage
2) Target-film distance
3) Kilovoltage
4) Focal-spot

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MDS PREP

Radiation caries is caused by irradiation of1) Salivary glands2) Enamel3) Enamel and dentin4) Oral mucosa

Speed at which electron travel in gas tube once released from cathode filament is dependent on1) Potential difference between electrodes2) Angle between filament and anoxic target3) Amount of kilovoltage applied to the circuit4) Intensity of current applied to target

The region which is closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periodical radiographs is1) Maxillary premolar view2) Mandibular premolar view3) Maxillary molar view4) Mandubular molar view

Radiographically, the normal horizontal plane of alveolar bone interdentally is related to 1. Cementoenamel junction of adjacent teeth2. Epithelial attachement of adjacent teeth3. Trabecular pattern of bone4. All of the above

Smooth surface enamel caries appear on radiographs1) Radiopaque saucer shaped2) Radiolucent saucer shaped3) Mixed radiopaque and radiolucent4) No radiographic changes

Unit of measurements to compare radiation damage1) Exposure2) Dose3) Effective dose4) Dose equivalent

Density of radiograph is independent of1) Milliamperage2) Target-film distance3) Kilovoltage4) Focal-spot

Explore by subjects

Radiation caries is caused by irradiation of
1) Salivary glands
2) Enamel
3) Enamel and dentin
4) Oral mucosa

Speed at which electron travel in gas tube once released from cathode filament is dependent on
1) Potential difference between electrodes
2) Angle between filament and anoxic target
3) Amount of kilovoltage applied to the circuit
4) Intensity of current applied to target

The region which is closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periodical radiographs is
1) Maxillary premolar view
2) Mandibular premolar view
3) Maxillary molar view
4) Mandubular molar view

Radiographically, the normal horizontal plane of alveolar bone interdentally is related to
1. Cementoenamel junction of adjacent teeth
2. Epithelial attachement of adjacent teeth
3. Trabecular pattern of bone
4. All of the above

Smooth surface enamel caries appear on radiographs
1) Radiopaque saucer shaped
2) Radiolucent saucer shaped
3) Mixed radiopaque and radiolucent
4) No radiographic changes

Unit of measurements to compare radiation damage
1) Exposure
2) Dose
3) Effective dose
4) Dose equivalent

Density of radiograph is independent of
1) Milliamperage
2) Target-film distance
3) Kilovoltage
4) Focal-spot