MDS PREP
What is the first step in the activation of vitamin D3 in the body?
1) Liver hydroxylation to calcidiol
2) Kidney hydroxylation to calcitriol
3) Skin synthesis from 7-dehydrocholesterol
4) Intestinal absorption with bile salts
The initial activation of vitamin D3 begins with its synthesis from 7-dehydrocholesterol in the skin when exposed to UV light.
Pigmentation of chemicals in mucosa is due to
1. Increased permeability of blood vessels
2. Local deposition of chemicals in muscosa
3. Subepithelial precipitation in connective tissue at the site due to increased capillary permeability
4. None of the above
Periodontics
Answer: 4
Pigmentation of chemicals in the mucosa is due to local deposition of chemicals in the mucosa.
Advantages of minimum mercury technique or Eames technique is all excpet
1) High strength
2) Sets quickly
3) Needs to squeezing of excess mercury
4) Greater plasticity and adapts well to cavity walls
Conservative Dentistry
Answer: 4
Which of the following is not a determinant of occlusion for CD
1) Freeway space
2) Condylar inclination
3) Distance of the teeth from the condyle
4) Incisal guidance
Prosthodontics
Answer: 1
If a biochemical test gives the same reading for a sample on repeated testing, it is inferred that the measurement is
1) Precise
2) Accurate
3) Specific
4) Sensitive
Community Dentistry
Answer: 1
Compared to tipping movements produced by removable appliance, bodily movements by means of fixed appliance
1) Move teeth rapidly
2) Move teeth slowly
3) Require high forces
4) Show higher root resorption
Orthodontics
Answer: 3
Microdontia is most commonly seen affecting
1. Maxillary lateral incisor
2. Mandibular second premolar
3. Mandibular central incisor
4. Mandibular first premolar