Final Pre (EXTRA) Test Flashcards
Mrs. O Final midterms/finals
What classification of restoration involves the proximal surface of a maxillary incisor and includes the incisal angle?
IV
Which of the following is the step in initial cavity preparation when the dentist decides on the design and initial depth of sound tooth structure?
Outline form
Which direct restorative material may be selected for the permanent restoration of a Class I lesion?
Composite resin
How many tooth surfaces does a Class I restoration involve?
One
Which is an example of a direct restorative dental material for a Class II restoration?
Composite Resin
What is the dental assistant responsible for during a restorative procedure?
Preparing and transferring dental materials
Class III restorations involve the interproximal surfaces of which teeth?
Incisors and canines
What is the material of choice for restoring Class III and Class IV preparations?
Composite resin
Complete the statement: “When completing a permanent restoration, the dentist should have knowledge of
the size and the position of the pulp of the tooth.
What is the final step in a cavity preparation?
Placing a desensitizing or lining agent
What responsibility does the dental assistant provide during a permanent restorative procedure?
Provide moisture control by using the high-velocity suction.
In which teeth are Class II restorations found?
Premolars and molars
What is the material of choice for a universal matrix band?
Thin, Flexible stainless steel
Which statement is correct concerning wedges?
Both a wedge is used to apply pressure to the apical and gingival walls of the preparation and the wedge presses the band against the tooth, causing a slight separation of the teeth.
Which matrix system used for Class II posterior restorations is the most common?
Tofflemire retainer and universal band
A matrix must be used to create a temporary wall for which of the following classifications of tooth restoration?
Classes II, III, and IV
Where should the cervical margin of a matrix band lie?
1 mm below the gingival margin of the preparation
The universal, or Tofflemire, retainer holds the matrix band snugly in position. It is most often positioned in which area?
On the buccal surface of the tooth being restored
If a cusp is lost during preparation, which matrix band would provide the best support while restoring?
Extension band
Which type of circumferential matrix system is used for the primary molars?
T-band
Where is the wedge positioned when placing a posterior restoration?
Lingual
What is one advantage of an AutoMatrix over a universal matrix?
No retainer to hold the band in
Which statement is correct regarding posterior metal matrix bands?
The smaller circumference is placed toward the gingiva.
Why is a matrix band contoured prior to placing the restorative material?
To ensure that the final restoration will have proper contact with the adjacent tooth
Which component of a fixed bridge anchors to existing teeth?
Abutment
What is the material of choice for an inlay or onlay restoration if esthetics is a concern?
Porcelain
Which of the following is an example of a fixed prosthesis?
Porcelain veneer
What is the term for each component of a fixed bridge?
Unit
How is the area under the pontic of a bridge maintained?
Clean under the pontic using floss and a floss threader.
Which component of a fixed bridge replaces a missing natural tooth?
Pontic
What is the name for a full metal crown that is covered in a thin layer of porcelain?
Porcelain-fused-to-metal crown
When one or more teeth are missing from the same arch, which permanent restoration is recommended?
Fixed bridge
What occurs at the final appointment in the crown and bridge process?
Cementation of a final restoration
Which cast restoration is designed to fit snugly within a tooth preparation, such as a Class II restoration, and covers only a portion of the occlusal and proximal surface?
Inlay
A gingival retraction cord is placed _____ the crown preparation is completed; it is removed _____ the final impression is taken.
after, Before
Under which condition would a post-and-core be recommended before placing a crown?
The tooth has been treated endodontically.
The two types of provisional coverage include _____ and _____.
custom; prefabricated
Methyl methacrylate is an example of which of the following types of materials commonly used for custom provisional coverage?
Powder/liquid materials
What is one disadvantage of using custom provisional coverage?
It can be the most time-consuming prosthesis to make.
What is the final step after cementing the provisional crown?
Check the occlusion.
Which of the following is appropriate patient home care instruction for someone with provisional coverage?
Pull floss through the contact, either to the facial or lingual side, once floss is placed below the contact.
Which provisional preformed crowns are used on anterior teeth when appearance is important?
Polycarbonate
How long does a provisional crown or bridge normally need to last?
2 weeks to 1 month
How far below the margin of the preparation should the provisional crown sit?
It should be flush with the margin.
Which cement is most commonly used with provisional crowns?
Zinc-oxide-eugenol (ZOE) temporary luting cement
The occlusal surface of the provisional coverage should sit _____ the occlusal plane of the adjacent teeth.
even with
Which procedure would require a patient to wear a provisional prosthesis for a longer period of time than is typical?
Implants or periodontal therapy
What is the most common type of provisional coverage used for crown and bridge preparations?
Custom-made
When would a stainless steel crown be used for provisional coverage?
Primary posterior teeth
