MDS PREP
All of the following are true regarding the design of an occlusal rest seat, except
1. the floor of the rest seat must be slightly away from the Centre of the tooth
2. the deepest part of the seat should be in the Centro of the preparation triangular
3. the outline form of the seat should be
4. the base of the triangular seat should be on the marginal ridge
Prosthodontics
Answer: 1
Collagenases that result in break down of connective tissue in periodontal disease is produced by
1) Staphylococcus aureus
2) Bacteroides gingivalis
3) Treponema microdentum
4) Veilonella alkalescens
Periodontics
Answer: 2
The cohesive gold used as a bulk filler is
1) Electraalloy
2) Mat gold
3) Spherical gold
4) Gold foil
Conservative Dentistry
Answer: 2
Which one of the following holds good i case of iontophoresis
1) Sodium chloride is used in this technique
2) It is safe to use on people with pacemakers
3) The pulp tester is used for the electric charge
4) It encourages negative ions to penetrate the tooth ions
Periodontics
Answer: 4
Explanation: Iontophoresis is a technique that uses a small electric current to drive charged substances (ions) into tissues. In dentistry, it is often used to deliver fluoride ions into the tooth structure, and it specifically encourages negative ions to penetrate.
Drug implicated for prolonging QT interval in a premature baby is :
1) Domperidone
2) Metoclopramide
3) Cisapride
4) Omeprazole
Pharmacology Answer: 3
Cisapride can cause QT prolongation when administered along with drugs like ketoconazole which inhibit hepatic cytochrome p-450 CYP 3A4 enzyme.
The point at which a stress of a material exhibits a specific limited deviation P Is called
1) Proportional limit
2) Tensile strength
3) Ultimate strength
4) Yield strength
Dental Materials Answer: 4
Yield strength is the stress required to produce plastic deformation.
Untrue about denture stomatitis
1. Associated with wearing of the denture at night
2. More common in females
3. More common in diabetic patients
4. Associated with sore mouth
Prosthodontics
Answer: 4
All are consequences of edentulism except
1. Prognathic appearance
2. Thinning of lips
3. Decreased length of lip
4. Increase in columella-philtrum angle
Prosthodontics
Answer: 3
All are consequences of edentulism except decreased length of lip.