Prosthodontics Flashcards

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Questions and Answers

What is the branch of prosthodontics concerned with the replacement of teeth and contiguous structures for edentulous or partially edentulous patients by artificial substitutes that are easily removable from the mouth?

Removable prosthodontics

What is a dental prosthesis that restores one or more but not all of the natural dentition?

Partial denture

Any removable prosthesis that replaces some teeth in a partially dentate arch that can be removed from the mouth and replaced at will by the patient is a?

RPD

What is the primary concern of patients regarding RPD?

<p>Restoration of esthetics and mastication</p> Signup and view all the answers

What is the primary concern of dentists regarding RPD?

<p>Preservation and support of remaining teeth and support structures</p> Signup and view all the answers

What are the major categories of partial tooth loss?

<p>Tooth-supported, tooth and tissue supported</p> Signup and view all the answers

RPDs should be socially acceptable in appearance, comfortable and stable, maintainable.

<p>True (A)</p> Signup and view all the answers

What are the three concepts of a well-functioning RPD?

<p>Stability, support and retention</p> Signup and view all the answers

An RPD that is firm, steady, and constant to resist displacement by functional, horizontal, or rotational stresses describes its?

<p>Stability</p> Signup and view all the answers

An RPD with maximum coverage of tissues providing load distribution refers to one with?

<p>Support</p> Signup and view all the answers

The quality of an RPD to resist forces of dislodgement along the path of placement is?

<p>Retention</p> Signup and view all the answers

Bone loss is greater in the maxilla than in the mandible.

<p>False (B)</p> Signup and view all the answers

Bone loss is greater in the posterior than the anterior.

<p>True (A)</p> Signup and view all the answers

Bone loss generally produces a broader mandibular arch while constricting the maxillary arch.

<p>True (A)</p> Signup and view all the answers

What is the physiologic purpose of alveolar bone?

<p>To hold teeth</p> Signup and view all the answers

Which prostheses have natural teeth alone providing direct resistance to functional forces with retention from clasps?

<p>Tooth-supported</p> Signup and view all the answers

The residual ridge is used to assist in the functional stability of the prosthesis.

<p>True (A)</p> Signup and view all the answers

Healthy residual ridge movement from ___ to ___ mm can be expected.

<p>1 to 3</p> Signup and view all the answers

______ is used to give maximum support in the posterior tissue region of the RPD.

<p>Distal extension</p> Signup and view all the answers

Advantages of RPD over FPD include?

<p>Lower cost, shorter fabrication time</p> Signup and view all the answers

Disadvantages of RPD over FPD include?

<p>Strain on abutment teeth, loss of tissue support, improper tooth prep design, unaesthetic clasps, caries beneath clasps</p> Signup and view all the answers

Kennedy classification is based on the relationship of _______ to ________.

<p>Edentulous spaces to abutment teeth</p> Signup and view all the answers

Kennedy classification is also based on the ______ of each edentulous condition in a population.

<p>Prevalence</p> Signup and view all the answers

Additional modifications to Kennedy's original classifications are known as?

<p>Applegate's rules</p> Signup and view all the answers

Kennedy Class I refers to?

<p>Bilateral edentulous areas located posterior to the remaining teeth</p> Signup and view all the answers

Kennedy Class II describes?

<p>Unilateral edentulous area located posterior to the remaining teeth</p> Signup and view all the answers

Kennedy Class III refers to?

<p>Unilateral edentulous area with natural teeth remaining both anterior and posterior to it (entirely tooth-borne appliance)</p> Signup and view all the answers

Kennedy Class IV involves?

<p>An anterior tooth bounded edentulous area which crosses the midline</p> Signup and view all the answers

What does Applegate's Rule 1 state?

<p>Teeth to be extracted are considered as edentulous spaces when classifying.</p> Signup and view all the answers

Applegate's Rule 2 indicates?

<p>Edentulous spaces not going to be restored are not considered in classification (third molars).</p> Signup and view all the answers

Applegate's Rule 3 states?

<p>Most posterior space determines class of arch.</p> Signup and view all the answers

Applegate's Rule 4 explains?

<p>Edentulous areas in addition to classifying one are modifications and designated by number of edentulous areas.</p> Signup and view all the answers

What does Applegate's Rule 5 state?

<p>Only Class I, II, and III may have modifications and length of space is not a consideration.</p> Signup and view all the answers

Flashcards

Removable Partial Denture (RPD)

A dental prosthesis replacing some teeth in a partially dentate arch, removable by the patient.

Removable Prosthodontics

Artificial replacements for teeth that can be taken out by the patient.

Retention

The ability of an RPD to resist dislodgement forces along its placement direction.

Stability

The firmness and resilience of an RPD against horizontal or rotational forces.

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Support

The ability of an RPD to distribute chewing forces over a larger area.

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Major Categories of Partial Tooth Loss

The tooth-supported and tooth-and-tissue-supported classifications of tooth loss.

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RPD Expectations

The expectation that an RPD should be functional, comfortable, and aesthetically pleasing.

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Kennedy Classification

The relationship between edentulous spaces and remaining teeth, used to classify different types of tooth loss.

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Applegate's Rules

Modifications to the original Kennedy classifications, taking into account specific factors.

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Bone Loss

The capacity of the bone to resist dislodgement forces, a key factor in RPD stability.

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Residual Ridge Resorption

The natural process of bone loss after tooth extraction.

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Residual Ridge

The area of bone remaining after a tooth is extracted.

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Tooth-Supported Prostheses

The direct resistance of functional forces by natural teeth, supporting the RPD.

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Clasps

The use of clasps to attach the RPD to remaining teeth.

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Residual Ridge Movement

The movement of the residual ridge under chewing forces.

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Distal Extension

The posterior extension of an RPD, providing maximum support in the back of the mouth.

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Distal Extension Area

The area of the mouth extending beyond the remaining teeth, towards the back.

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Distal Extension Base

The placement of the RPD's distal extension region on the gums.

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Distal Extension Base Design

The use of a denture base extending into the distal extension area, for better support.

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Clasp Design

The placement of clasps on an RPD.

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Clasp Placement

The area of the mouth where the clasps are placed on the teeth.

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Abutment Tooth Forces

The forces applied to the abutment teeth by the RPD.

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Full Denture Base

A denture base with extensions that cover the gums, for better support.

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Partial Denture Base

A denture base with extensions that only cover the gums around the remaining teeth, for less coverage.

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Tooth-and-Tissue-Supported RPD

An RPD that is supported by both teeth and the gums.

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Tooth-Supported RPD

An RPD that is supported only by teeth.

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Base Placement

The placement of the RPD's extension on the gums, for better support.

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Base Design

The design of the base for better support and retention.

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RPD Position

The position of the RPD in relation to the supporting teeth.

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RPD Placement

The placement of the RPD on the teeth and gums.

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RPD Maintenance

The maintenance of an RPD to ensure its proper function and longevity.

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Study Notes

Removable Prosthodontics

  • Focuses on replacing teeth and contiguous structures for edentulous or partially edentulous patients using artificial substitutes that are removable.

Partial Denture

  • A dental prosthesis that restores one or more but not all natural teeth and can be either removable or fixed.

RPD (Removable Partial Denture)

  • Defined as any removable prosthesis replacing some teeth in a partially dentate arch, removable by the patient at will.

Patient and Dentist Concerns

  • Patients prioritize aesthetic restoration and mastication.
  • Dentists emphasize preservation and support of remaining teeth and supportive structures.

Major Categories of Partial Tooth Loss

  • Tooth-supported and tooth-and-tissue-supported classifications.

RPD Expectations

  • RPDs should be socially acceptable, comfortable, stable, and maintainable.

Key Concepts of a Well-Functioning RPD

  • Stability, support, and retention are essential for effective performance.

Stability

  • Refers to an RPD's firmness and resilience against functional, horizontal, or rotational stresses.

Support

  • Characterized by maximum tissue coverage to facilitate load distribution.

Retention

  • The capacity of an RPD to resist dislodgement forces along its placement path.

Bone Loss Insights

  • Bone loss is greater posteriorly than anteriorly.
  • Generally produces broader mandibular arches while constricting maxillary arches.

Physiological Purpose of Alveolar Bone

  • To hold natural teeth in place.

Tooth-Supported Prostheses

  • Direct resistance to functional forces provided by natural teeth, with retention from clasps.

Role of the Residual Ridge

  • Assists in functional stability of the prosthesis.

Residual Ridge Movement

  • Typical movement ranges from 1 to 3 mm in a healthy residual ridge.

Distal Extension

  • Provides maximum support in the posterior tissue region of the RPD.

Advantages of RPD Over FPD

  • Cost-effective and quicker fabrication times compared to fixed partial dentures.

Disadvantages of RPD Over FPD

  • Potential strain on abutment teeth, loss of tissue support, and risks of caries beneath clasps.

Kennedy Classification Overview

  • Based on the relationship of edentulous spaces to abutment teeth and the prevalence of each condition in the population.

Applegate's Rules

  • Modifications to Kennedy's original classifications addressing specific factors in determining classifications.

Kennedy Classifications

  • Class I: Bilateral edentulous areas located posterior to remaining teeth.
  • Class II: Unilateral edentulous area located posterior to remaining teeth.
  • Class III: Unilateral edentulous area with natural teeth remaining both anteriorly and posteriorly.
  • Class IV: Anterior tooth-bounded edentulous area crossing the midline.

Applegate's Rules Insights

  • Rule 1: Teeth scheduled for extraction are treated as edentulous spaces in classification.
  • Rule 2: Edentulous spaces not to be restored are excluded from classification.
  • Rule 3: The most posterior space dictates the class of the arch.
  • Rule 4: Additional edentulous areas are treated as modifications and designated by numbers.
  • Rule 5: Only Classes I, II, and III can have modifications, regardless of the length of edentulous spaces.

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