Fixed 1 Midterm

Front

The full-coverage crown and its preparation: may protect weakened tooth structure, requires more tooth structure removal than an intercoronal restoration, encircles all the remaining coronal tooth structure

Back

A, B, and C

Front

Indications for placement of a full-coverage crown may include: teeth with large existing restorations, cracked tooth, broken cusps, the patient desires a more esthetic tooth.

Back

all of the above

Front

Which of the following is NOT one of the principles of tooth preparation?
- preservation of the periodontium
- preservation of the pulpal innervation
- preservation of tooth structure
- retention and resistance form
- marginal integrity

Back

preservation of the pulpal innervation

Front

__________ prevents dislodgment of a restoration by forces directed in apical or oblique directions.

Back

resistance

Front

Crown preparations are tapered (converge occlusally) to:

Back

allow us to visualize the preparation walls from the occlusal direction and eliminate axial wall undercuts.

Front

The acceptable range for crown preparation convergence of the total axial walls in our course is _____ degrees.

Back

6-16

Front

While longer axial wall lengths are generally more retentive, the minimal axial wall length should be _____ mm.

Back

3-4

Front

__________________ is the imaginary line in which a restoration can be placed onto or removed from a preparation.

Back

path of insertion

Front

The complete gold crown (full gold crown) preparation should include each of the following reduction guidelines EXCEPT one. Which one is the EXCEPTION? Options: 1.0 mm on the non-functional cusp, 1.5 mm on the functional cusp, 0.7-1.0 mm buccal and lingual axial reduction, 0.7-1.0 mm chamfer thickness, 0.3-0.5 mm chamfer thickness

Back

0.7-1.0 mm chamfer thickness

Front

The Exaflex putty impression prior to beginning tooth preparation for a full gold crown:

Back

is made with a vinyl siloxane impression material and is used as a mold for the provisional crown restoration that is placed at the end of the preparation appointment.