MDS PREP
Bony defects which result in plateau-like marginal bone are called
1. Bulbous adaptive
2. Ledges
3. Craters
4. Trough
Pedodontics
Answer: 1
Bony defects that result in plateau-like marginal bone are called bulbous adaptive.
Which of part of the instrument should remain parallel (whenever possible) to the long axis of the tooth?
1) Blade
2) Cutting edge
3) Handle
4) Shank
Periodontics
Answer: 4
Following orthodontic treatment of rotated tooth, relapse is most commonly due to
1) Oblique fibers
2) Supracrestal fibers
3) Sharpey’s fibers
4) Apical fibers
Orthodontics Answer: 2
Solution
This is because elastic supracrestal fibres remodel extremely slowly and can still exert forces capable of displacing a tooth even at 1 year after removal of an orthodontic appliance.
Epithelium of the oral cavity differs from the epithelial lining of the cyst in
1) Stratum corneum
2) Stratum incidum
3) Stratum germinativum
4) Spinous cell layer
Oral Pathology
Answer: 3
Lentulo spirals are used for
1) Locating canal orifice
2) Pulp extirpation
3) Enlarging coronal third of the root canal
4) Application of root canal sealer
Endodontics
Answer: 4
A screening test is used in the same way in two similar population; but the proportion of false positive results among those who test positive in population A is lower than those who test positive in population B. What is the likely explanation?
1) The specificity of the test is lower in population A
2) The prevalence of the disease is lower in population A
3) The prevalence of the disease is higher in population A
4) The specificity of the test is higher in population A
Community Dentistry
Answer: 4
Best X-ray for mesiodens is
1) Occlusal
2) PA view
3) Panorex
4) Bitewing
Radiology
Answer: 1
In conventional class III amalgam cavity preparation the axial wall in inciso gingival direction should be
1. Straight and parallel to the long axis of the crown, deeper incisally than gingivally
2. Convex and parallel to the long axis of the tooth
3. Concave and parallel to the incisogingival contour of the tooth
4. None of the above
Conservative Dentistry
Answer: 1
Explanation: In a conventional Class III amalgam cavity
preparation, the axial wall should be straight and parallel to the long axis of
the tooth. This design ensures that the restoration has adequate resistance form
and is less likely to dislodge under occlusal forces. The wall being deeper
incisally than gingivally helps to maintain the integrity of the tooth structure
and provides a stable base for the amalgam restoration.