RPD 01 - Removable Prosthodontics Intro and Terminology (Quiz 1)

removable prosthodontics

Define the following:

The branch of Prosthodontics concerned with the replacement of teeth and contiguous structures for edentulous or partially edentulous patients by artificial substitutes that are readily removable from the mouth by the patient.

removable denture

What replaces some teeth in partially edentulous arch?

true

T/F: The removable denture can be readily inserted and removed from the mouth by the patient

- Wooden RPD base with carved ivory teeth

- Ivory RPD

- Swaged RPD with gold framework and porcelain teeth

- Swaged silver framework

- Vulcanite base with porcelain teeth

What were some RPD in the past?

- Fixed partial denture

- Implant prosthesis

What are two fixed prostheses?

- Removable complete prosthesis

- Removable partial prosthesis

What are two removable prostheses?

True

T/F: RPDs have been shown to be very effective and are considered an appropriate treatment modality for a wide variety of patient situations when multiple teeth are missing.

people live longer

Why is there an increase in demand for RPDs?

All of the above!

Which of the following are indications for RPDs?

A) Replacement of missing teeth when a fixed partial denture is not possible

B) No teeth for posterior support

C) Long span edentulous area

D) Reduced periodontal support

E) Excessive bone loss within residual ridge

F) Esthetics

G) Immediate need to replace extracted teeth

H) Patient desires

- Maintain or Enhance Quality of Life

- Function (Proper speech, mastication, and swallow)

- Comfort (No pain or discomfort during speaking, chewing, and swallowing)

- Esthetics (Functioning in society without embarrassment)

What are the 4 objectives of dental prothesis?

retention

Define the following:

Resistance against vertical dislodging forces

Direct retainers (clasps) engaging an undercut on the abutment tooth

What provides the primary retention in a removable partial denture (RPD)?

support

Define the following:

Resistance against forces directed towards the tissue

stability

Define the following:

Resistance against horizontal or lateral forces

removable partial denture

Define the following:

A removable denture that replaces some teeth in a partially edentulous arch; the removable partial denture can be readily inserted and removed from the mouth by the patient.

interim prosthesis

Define the following:

- A fixed or removable dental prosthesis, or maxillofacial prosthesis, designed to enhance esthetics, stabilization, and/or function for a short period of time, after which it is to be replaced by a definitive dental or maxillofacial prosthesis

- Often such prostheses are used to assist in determination of the therapeutic effectiveness of a specific treatment plan or the form and function of the planned for definitive prosthesis

interim/provisional RPD

Define the following:

A partial denture used for a short period for reasons of esthetics, chewing, occlusal support, and for psychological reasons; usually made of acrylic resin.

abutment

Define the following:

1. The part of a structure that directly receives thrust or pressure; an anchorage

2. A tooth, a portion of a tooth, or that portion of a dental implant that serves to support and/or retain a prosthesis.

height of contour

Define the following:

A line encircling a tooth and designating its greatest circumference at a selected axial position determined by a dental surveyor; a line encircling a body designating its greatest circumference in a specified plane; syn, SURVEY LINE

undercut

Define the following:

1) the portion of the surface of an object that is below the height of contour in relationship to the path of placement

(2) the contour of a cross-sectional portion of a residual ridge or dental arch that prevents the insertion of a dental prosthesis

(3) any irregularity in the wall of a prepared tooth that prevents the withdraw or seating of a wax pattern or indirect restoration

(4) to create areas that provide mechanical retention for dental materials placement

guiding planes

Define the following:

Two or more vertically parallel surfaces on abutment teeth and/or fixed dental prostheses oriented so as to contribute to the direction of the path of placement and removal of a removable partial denture, maxillofacial prosthesis, and overdenture. Can be natural or created.

direct retainer

Define the following:

The component of a removable partial denture used to retain and prevent dislodgment, consisting of a clasp assembly or precision attachment

clasp assembly

Define the following:

The part of a removable partial denture that acts as a direct retainer and/or stabilizer for a prosthesis by partially encompassing or contacting an abutment tooth. Components include the retentive clasp, reciprocal clasp, cingulum, incisal, or occlusal rests and a minor connector

clasp

Define the following:

The component of the clasp assembly that engages a portion of the tooth surface and either enters an undercut for retention or remains entirely above the height of contour to act as a reciprocating element; generally it is used to stabilize and retain a removable partial denture

circumferential clasp

Define the following:

A retainer that encircles a tooth by more than 180 degrees, including opposite angles, and which generally contacts the tooth throughout the extent of the clasp, with at least one terminal located in an undercut area

bar clasp

Define the following:

A clasp retainer whose body extends from a major connector or denture base, passing adjacent to the soft tissue and approaching the tooth from a gingiva-occlusal direction

indirect retainer

Define the following:

The component of a removable partial denture that assists the direct retainer(s) in preventing displacement of the distal-extension denture base by functioning through lever action on the opposite side of the fulcrum line when the denture base attempts to move away from the tissues in pure rotation around the fulcrum line

Rest

Define the following:

A rigid extension of a removable partial denture that contacts the occlusal, incisal, cingulum, or lingual surface of a tooth or restoration, the surface of which is commonly prepared to receive it

rest seat

Define the following:

The prepared recess in a tooth or restoration developed to receive the occlusal, incisal, cingulum, or lingual rest

indirect retainer

What is 1?

fulcrum line

What is 2 (green line)?

Rest

What is 1?

Retentive arm

What is 2?

reciprocal arm

What is 3?

major connector

Define the following:

The part of a removable partial denture that joins the components on one side of the arch to those on the opposite side

minor connector

Define the following:

The connecting link between the major connector of a base of a partial denture and other units of the prosthesis, such as the clasp assembly, indirect retainers, and rests

denture base

Define the following:

The part of a denture which rests on the oral mucosa and to which teeth are attached

major connector

What is A?

Minor connector

What is B?

denture base

What is C?

residual/edentulous ridge

Define the following:

The portion of the alveolar ridge and its soft tissue covering which remains after the alveoli have disappeared from the alveolar process following the removal of teeth

basal seat/denture foundation area

Define the following:

Oral tissues covered by the denture base

dental surveyor

Define the following:

An instrument used in removable partial denture construction to locate and delineate the contours and relative positions of abutment teeth and associated structures

suprabulge

Define the following:

Portion of the crown of a tooth which converges towards the occlusal surface of the tooth

infrabulge

Define the following:

Portion of the crown of a tooth gingival to survey line, or height of contour

reline

Define the following:

The procedures used to resurface the intaglio surface of a removable dental prosthesis with new base material, thus producing an accurate adaptation to the denture foundation

rebase

Define the following:

The laboratory process of replacing the entire denture base material on an existing prosthesis

kennedy classification

What is the most widely used classification system of edentulous spaces?

4

How many categories are there in the kennedy classification system?

Class I

What kennedy classification?

Class I

What kennedy classification?

Characterized by bilateral edentulous areas located posterior to the remaining natural teeth

tooth and tissue (abutment teeth and residual ridge)

Kennedy Class I is supported by what?

Class II

What kennedy classification?

Class II

What kennedy classification?

Displays an unilateral edentulous area located posterior to the remaining natural teeth

Tissue and tooth (abutment tooth and residual ridge)

Kennedy Class II is supported by what?

Class III

What kennedy classification?

Class III

What kennedy classification?

Presents a unilateral edentulous area with natural teeth both anterior and posterior to it.

tooth (only supported by abutment teeth)

Kennedy Class III is supported by what?

Class IV

What kennedy classification?

Class IV

What kennedy classification?

Displays a single, bilateral edentulous area located anterior to the remaining natural teeth. The edentulous area MUST cross the dental midline

tooth (only supported by abutment teeth)

Kennedy Class IV is supported by what?

- Class III

- Class IV

What two classes are only tooth-supported?

- Class I

- Class II

What two classes are supported by both tooth and tissue?

applegate

What classification system accounts for extractions?

False (should follow rather than precede extractions--go based off dentition post extraction!)

T/F: Applegate's rules of classification state that the classification should precede rather than follow extractions that may after original classification

is not

For Applegate's classification: if a 3rd molar is missing and not to be replaced it (is or is not) considered in the classification

is

For Applegate's classification: if a 3rd molar is present and it is to be used as an abutment, it (is or is not) considered in the classification

is not

For Applegate's classification: if a 2nd molar is missing and is not to be replaced, it (is or is not) considered in the classification

The most posterior edentulous area(s)

For Applegate's classification: what edentulous area always determines the classification?

Left

For Applegate's classification:

Which arrow represents the classification?

Right

For Applegate's classification:

Which arrow represents the modification?

Kennedy Class I Mod 1

What is the kennedy/applegate classification?

Kennedy Class I Mod 2

What is the kennedy/applegate classification?

Class I

Each Kennedy classification refers to a single edentulous area EXCEPT which classification?

Kennedy Class II

What kennedy classification?

Kennedy Class II Mod 1

What kennedy classification?

Kennedy Class II Mod 2

What kennedy classification?

Kennedy Class III

What kennedy classification?

Kennedy Class III Mod 1

What kennedy classification?

Kennedy Class III Mod 3

What kennedy classification?

class IV

Which kennedy class can there be NO modification areas?

Kennedy class IV

What kennedy classification?

Kennedy Class III Mod 1

What kennedy classification?

Kennedy class I Mod 2

What kennedy classification? (black are missing teeth, all missing teeth are replaced by partial denture except 3rd molar which is not replaced)

Kennedy class III Mod 1

What kennedy classification?

Kennedy class I Mod 2

What kennedy classification?

Kennedy class II Mod 3

What kennedy classification?

Kennedy class II Mod 1

What kennedy classification?

Kennedy class II

What kennedy classification?

Kennedy class I Mod 1

What kennedy classification?