MDS PREP
What is the typical incubation period for typhoid fever?
1) 1-3 days
2) 4-7 days
3) 10-14 days
4) 21-28 days
General Microbiology Answer: 3The typical incubation period for typhoid fever is 10-14 days: After the ingestion of Salmonella typhi, it typically takes 10-14 days for symptoms to appear. This period can sometimes be shorter or longer, but this is the most common range.
All are most common symptoms of hyperthyroidism (thyrotoxicosis) except
1) Heat intolerance
2) Palpitations
3) Alopecia
4) Increased sweating
Oral medicine
Answer: 3
What is Sunday bite related to?
1) Angle’s class I with anterior open bite
2) Angle’s class I with anterior deep bite and posterior cross bite (unilateral)
3) Angle’s class II
4) Angle’s class III
Orthodontics Answer: 3
SOLUTION
Children and adults with a skeletal Class II relationship and an underlying skeletal Class II jaw relationship position the mandible forward in a “Sunday bite,” making the occlusion look better than it really is.
Periodontal pocket wall between tooth and bone is
1) Supra bony pocket
2) Infrabony pocket
3) Gingival pocket
4) Pseudo pocket
Periodontics
Answer: 2
Which of the following organisms is NOT implicated in aetiology of periodontal disease
1) Bacteroides
2) Wolinella
3) Neisseria
4) Eikenella
Periodontics
Answer: 3
In the above, which of the following applies to affected dentin
1) 1, 2, 3, 4
2) 1, 3, 5, 7,
3) 1, 5, 7, 8
4) 5, 6, 7, 8
Pedodontics
Answer: 2
When calcospherites fail to fuse during calcification of dentin matrix then
1 Interglobular dentin is formed
2 Dead tracts are found in formed dentin
3 Irregular dentin results
4 None
Dental Anatomy Answer: 1
Interglobular Dentin:
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass. This results in zones of hypomineralization between the globules.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix formation, the dentinal tubules pass uninterruptedly through interglobular dentin.
Which of the following is NOT a characteristic of the spore formation in C1. Perfringens?
1) Central or equatorial spores, giving the bacillus a spindle shape
2) Subterminal spores, causing the bacillus to appear club shaped
3) Oval and terminal spores, resembling a tennis racket
4) Spherical and terminal spores, resulting in a drumstick appearance
General Microbiology Answer: 3
C1. Perfringens forms subterminal spores, which cause the bacillus to appear club-shaped under the microscope. The tennis racket appearance is not a characteristic of C1. Perfringens spore formation.