MDS PREP
The main advantage exhivited by the porcelain compared to the tooth coloured restorations
1) Good marginal integrity
2) High tensile strength
3) Better colour hormony
4) Highly insoluble
Conservative Dentistry
Answer: 4
The cohesive gold used as a bulk filler is
1) Electraalloy
2) Mat gold
3) Spherical gold
4) Gold foil
Conservative Dentistry
Answer: 2
Too low intensity of current in electrosurgery results in
1) Persistent bleeding
2) Tissue necrosis
3) Tissue drag
4) All of the above
Conservative Dentistry
Answer: 3
Pin failures with cemented pins mainly occur
1) Within the restoration
2) Within the tooth structure
3) Cement-tooth interface
4) Cement-pin interface
Conservative Dentistry
Answer: 4
The main disadvantages of composites of not being recommended for class II posterior restorations
1) Colour matching is not good
2) Lacks sufficient strength
3) Occlusal wear
4) Frequent fractures at the isthmus
Conservative Dentistry
Answer: 3
Which of the following dental cements accelerates the formation of reparative dentin?
1) Eugenol
2) Calcium hydroxide
3) Zinc oxide
4) Silica
Conservative Dentistry
Answer: 2
Bonding of composite restorations to dentin depends on
1. Acid etching of dentin
2. Difunctional coupling agents
3. Chemical bonding
4. All of the above