cause

Similar questions:

The most likely cause of tooth loss following a tunneling procedure to provide complete access for a mandibular Class III furcation involvement is

root caries.
Released Written Exam book 1 2006

Which of the following is LEAST likely to
cause pain?

Chronic hyperplastic pulpitis (pulp polyp).
NDEB released questions set 1

After completion of endodontic
chemomechanical debridement you can
expect to have
1. removed all tissue from the entire
root canal system.
2. machined the canals to a
microscopically smooth channel.
3. caused some temporary
inflammation.
4. sterilized the root canal.
5. left some areas of the root canal
system incompletely cleaned.

(1) and (3)
NDEB released questions set 1

For a cast gold restoration, a gingival
bevel is used instead of a shoulder because
a bevel
1. protects the enamel.
2. increases retention.
3. improves marginal adaptation.
4. increases the thickness of gold.

(1) and (3)
NDEB released questions set 1

Firm contact between approximating teeth
is important because it

stabilizes the dental arches and gives protection to the gingival papillae.
NDEB released questions set 1

For composite resin preparations, cavosurface enamel margins are bevelled because
1. a bevelled margin produces a more favorable surface for etching.
2. a bevelled margin improves the edge strength of the composite resin.
3. after etching, the bonding agent reduces microleakage.
4. the procedure eliminates the need to polish the restoration.

(1) and (3)
NDEB released questions set 1

In composite resin restorations, polycarboxylate cements are used as a base because they are

biocompatible.
NDEB released questions set 1

In the mandibular first premolar, the occlusal dovetail of an ideal disto-occlusal amalgam preparation is usually not extended into the mesial fossa because of the

prominent transverse ridge.
NDEB released questions set 1

Special attention is given to matrix adaptation for the insertion of amalgam in a MO cavity in a maxillary first premolar because of the

concavity in the cervical third of the mesial surface of the crown.
NDEB released questions set 1

Erythroblastosis fetalis may be a cause of

pigmented teeth.
NDEB released questions set 2

Contact stomatitis may be caused by

All of the above.
NDEB released questions set 2

Radiographically, a benign bone neoplasm can be differentiated from a malignant one because in the benign lesion
1. the margins are irregular and fade into the surrounding bone.
2. the cortex remains intact.
3. the margins are defined and demarcated.
4. there can be perforation of the periosteum.

(2) and (3)
NDEB released questions set 2

For a patient who exhibits bruxism, a cast gold inlay is superior to an amalgam because the inlay has

better ability to withstand masticatory forces.
NDEB released questions part 2 set 1

Which of the following can cause secondary hyperparathyroidism?

Chronic renal failure.
NDEB released questions part 2 set 1

Which of the following most likely causes pulpal irritation with posterior composite resin restorations?

Separation of composite resin from acid-etched dentin.
NDEB released questions part 2 set 1