Dental Materials Exam 3 - General Dentistry Chapter 48

Questions and Answers

The internal surface of a cavity preparation positioned in the same vertical direction as the pulp within the tooth is called the ______.

Axial wall

A pitted area in a tooth caused by decay is known as a ______.

Cavity

The process of decay removal and tooth design in preparation for restoring a tooth is termed ______.

Cavity preparation

What is the function of convenience form in cavity preparation?

It allows the dentist easier access when restoring a tooth. Signup and view all the answers

Which of the following describes esthetic dentistry?

Category focusing on improving the appearance of teeth Signup and view all the answers

What is meant by the term 'resistance form' in cavity preparation?

It refers to the shape and placement of cavity walls in preparation for tooth restoration. Signup and view all the answers

What type of restoration involves lesions affecting the pits and fissures of a tooth?

Class I Restoration Signup and view all the answers

Why are retention pins sometimes used in restorations?

They are used to retain and support a restoration when decay has extended beyond a specific classification. Signup and view all the answers

Class II restorations are extensions of Class I restorations into the proximal surfaces of the teeth.

True Signup and view all the answers

What is the primary reason for placing an intermediate restoration?

To wait and determine the health of the tooth Signup and view all the answers

What are the two techniques for applying composite veneers?

Direct technique and indirect technique. Signup and view all the answers

Name one type of tooth-whitening treatment.

In-office treatment, at-home treatment, or over-the-counter options. Signup and view all the answers

Study Notes

Dental Materials Overview

Axial Wall: Internal surface of a cavity aligned vertically with the tooth's pulp.
Cavity: A defect in a tooth due to decay.
Cavity Preparation: Removal of decay and shaping of a tooth for restoration.
Cavity Wall: Internal surface of the cavity.
Convenience Form: Design element in cavity preparation for easier restoration access.
Diastema: Space between two teeth.

Cavity Preparation Principles

Outline Form: Initial design and depth determined by the dentist for effective restoration.
Resistance Form: Involves shaping cavity walls to withstand forces during function.
Retention Features: Placement of retention aids to secure the restoration.
Accessibility: Ensures the tooth can be effectively prepared and restored.

Classes of Permanent Restorations

Class I Restoration: Targets pits and fissures; prone to plaque accumulation.
- Involves premolars, molars, and anterior teeth’s lingual surfaces.
- Requires dentist assessment of occlusion for proper restoration.
Class II Restoration: Extends to proximal surfaces; often necessitates amalgam or composite.
- Involves the occlusal surface for approach due to access difficulties.
- Requires a matrix system to hold restoration materials in place.
Class III Restoration: Affects interproximal surfaces of incisors and canines.
Class IV Restoration: Similar to Class III but includes incisal edges; requires aesthetic composite resins.
Class V Restoration: Smooth surface lesions on facial/lingual gingival thirds; prepared with no angles.

Retention Pins in Complex Procedures

Used when decay exceeds the limits of traditional retention methods.
One pin typically required per cusp for stability.
Alternative to grooves or bonding when significant tooth structure is compromised.

Intermediate Restorations

Serve as a provisional measure to assess tooth health before permanent restoration.
Commonly employed to allow time for permanent restoration or due to financial considerations.

Composite Veneers Application

Veneers: Thin tooth-colored material for aesthetic enhancement.
Direct Technique: Composite resin bonded directly to the tooth surface.
Indirect Technique: Custom porcelain veneers prepared in a lab and cemented to the tooth.

Tooth-Whitening Procedures

Various methods include in-office, at-home treatments, and over-the-counter products.
Dental assistants play a key role in assisting with these procedures and patient education.

Description

Test your knowledge on key terms and concepts related to dental materials as covered in Chapter 48 of General Dentistry. This quiz will help reinforce definitions and pronunciations relevant to cavity preparations and other essential terms. Prepare for your exam with these focused flashcards.