Dental Restoration and Retention Quiz

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Which factor is the most important in keeping a restoration in place?

Marginal fit

Retention and resistance (correct)

Structural strength

Protection of dental tissues

What is the main purpose of providing retention and resistance in tooth preparation?

To keep the restoration firmly in place (correct)

To prevent fractures of the restorative material

To preserve the adjacent tooth structure

To prevent plaque accumulation

What is the specified clinically acceptable taper for tooth preparation?

2-3 degrees (correct)

8-10 degrees

6-7 degrees

4-5 degrees

What is the convergence of two opposite-facing external walls of a crown preparation defined as?

Finish line taper Signup and view all the answers

Why should intact tooth tissue be preserved as much as possible in preparing for a successful restoration?

To ensure structural strength Signup and view all the answers

What is the factor that prevents the restoration from being dislodged along the long axis of the tooth or entryway of the restoration?

Retention form Signup and view all the answers

What is the main purpose of protection of dental tissues in restoration?

To preserve the remaining tooth structure Signup and view all the answers

What should be considered to achieve success in fixed prosthetic restorations?

Considering certain basic principles Signup and view all the answers

What is the most important factor in providing a homogeneous reduction depth during tooth preparation?

Preparing in accordance with the anatomical form of the tooth Signup and view all the answers

What type of margin geometry is generally preferred today and can be applied in almost every indication?

Chamfer Signup and view all the answers

What is the main disadvantage of the knife-edge application as a finishing line type?

Overcontouring according to the curvature of the tooth Signup and view all the answers

Why should the margin level be adjusted as supra-gingival as possible during tooth preparation?

To protect periodontal tissues Signup and view all the answers

What is one of the most important measures that can be applied to increase the structural strength in the occlusal section?

Pay attention to functional tubercles Signup and view all the answers

What should be done if necessary to increase resistance in preparations with short walls?

Add retentive grooves parallel to each other Signup and view all the answers

Why is it ideal to prepare 1.5 mm from the functional tubercle and 1 mm from the nonfunctional tubercle for restoration?

To ensure proper thickness for resistance Signup and view all the answers

What is the key factor in retaining preparations with single path of insertion and long parallel walls?

Long axial walls prepared as parallel as possible Signup and view all the answers

What is the primary focus of the course on Fixed Prosthetic Restorations?

Tooth preparation principles and techniques Signup and view all the answers

Which of the following is NOT a learning outcome of the course?

Performing complex dental surgical procedures Signup and view all the answers

According to the course objectives, what should a student be able to establish using the six basic tooth preparation principles of Shillingburg?

All of the above Signup and view all the answers

What is the duration of the 'General Principles of Tooth Preparation' course?

50 minutes Signup and view all the answers

From which book is the course material primarily derived?

Contemporary Fixed Prosthodontics, 6th Edition Signup and view all the answers

What is the name of the committee responsible for the course?

CS-2 Signup and view all the answers

What is the main purpose of tooth preparation, as mentioned in the text?

To create space for restorative materials and techniques Signup and view all the answers

What is the expected outcome related to the understanding of resistance and retention forms in tooth preparation?

Improved predictability and success in restorations Signup and view all the answers

What are the potential injuries that may occur during full crown preparation?

Direct pulp perforation, excessive heat, pressure, chemical irritation, and microorganisms Signup and view all the answers

What is the purpose of making extra 'critical area' preparation in the labio-incisal region during tooth preparation?

To increase success in achieving aesthetics Signup and view all the answers

What are the advantages of a sub-gingival margin level in dental crown preparation?

Hiding the border of an aesthetic restoration behind the labiogingival crest Signup and view all the answers

What is the recommended length of tooth reduction from the incisal edge in anterior tooth preparation?

2 mm Signup and view all the answers

Why is it important to use a thin flame bur in the proximal aspect preparation during anterior tooth preparation?

To remove a thin enamel layer without damaging the adjacent tooth Signup and view all the answers

What is the purpose of performing margin preparation on the lingual surface during anterior tooth preparation?

To protect the cingulum and provide stabilization and retention of the restoration Signup and view all the answers

Why is it important to correct undercut areas during tooth preparation?

To ensure proper fit of the restoration Signup and view all the answers

What is the first step in posterior tooth preparation?

Controlling the depth of reduction from the occlusal surface with a 1 mm diameter bur Signup and view all the answers

What is the recommended distance for preparing the proximal surface without damaging the tooth in contact?

5 mm from the functional tubercle Signup and view all the answers

What can be used to protect the tooth in contact while preparing the proximal surface?

Matrix tape Signup and view all the answers

How should the margin edges be lowered during the preparations on the buccal and lingual/palatal surfaces?

To the gingival level Signup and view all the answers

What is the consequence of straightly preparing the occlusal surface of an already short tooth for restoration?

Shortens the preparation further and results in failures Signup and view all the answers

What type of preparation will increase the lengths of the buccal and lingual walls, thereby increasing the chance of success?

In accordance with the form of the central fossa and tubercle crests Signup and view all the answers

What will happen if the proximal surface is prepared more than 5 mm from the functional tubercle?

Excessive reduction without significant benefit Signup and view all the answers

What can be used to determine the reduction depth of the buccal and lingual walls during tooth preparation?

$1$ mm diameter bur Signup and view all the answers