MDS PREP
High incidence of dental caries in adolescents can can be directly related to
1) Frequency of sugar intake
2) Amount of sugar intake
3) Carelessness oral hygiene
4) Hormonal changes
Community Dentistry
Answer: 1
Taurodontism is characterized by
1. Hypercementosis
2. Wide pulp canals and short roots
3. Obliterated pulp chambers with secondary dentine deposition
4. Rootless teeth with thin shell of enamel
Oral Pathology
Answer: 2
Id reaction is associated with
1) Aphthous ulcer
2) Herpetic stomatitis
3) Syphilis
4) Candidiasis
Oral Pathology
Answer: 4
Which of the following is most commonly associated with leukoplakia?
1. Syphilis
2. Smoking
3. Galvanism
4. Sharp cusps
Oral Pathology
Answer: 2
First radiographic sign of periodontitis
1) Wedge-shaped radiolucencies
2) Loss of crestal bone
3) No sign
4) Loss of lamina dura
Periodontics
Answer: 4
Which of the following is NOT a method used to produce a recombinant hepatitis B vaccine?
1) Cloning the HBsAg gene in E. coli
2) Cloning the HBsAg gene in yeasts Saccharomyces cerevisae
3) Extracting and purifying HBsAg particles from infected human plasma
4) Using baculovirus vectors to produce HBsAg in insect cells
General Microbiology Answer: 1
While recombinant hepatitis B vaccines are produced using various methods, cloning the HBsAg gene in E. coli is not one of them. Instead, the gene is typically cloned in yeast or insect cells to produce the surface antigen for the vaccine.