Intro-Rules and Stuff Flashcards
The goal of an RPD is a prosthesis that replaces ______ (______) missing teeth and contiguous tissues.
some (not all)
TERM: Resistance to removal from the tissues or teeth
Retention
TERM: Resistance to movement in a HORIZONTAL direction (anterior-posteriorly or medio-laterally)
Stability
TERM: Stability-Resistance to movement in a _______ direction (anterior-posteriorly or medio-laterally)
HORIZONTAL
TERM: Resistance to movement TOWARDS the tissues or teeth
Support
TERM: Support-Resistance to movement IN WHICH DIRECTION??
towards the tissues or teeth
TERM: A tooth that supports a partial denture
Abutment
TERM: A component of a partial denture that provides both retention and support for the partial denture
Retainer
TERM: Retainer-A component of a partial denture that provides both ________ and _______ for the partial denture
retention and support
Contraindications for RPD: 3 main items… WHAT should be the first choice when possible??
1.Caries 2.strain on teeth 3.not esthetic….FIXED partial denture should be first choice
KENNEDY: Characterized by BILATERAL edentulous areas located posterior to the remaining natural teeth. ( aka “Double Distal”)
Class I
KENNEDY: Characterized by a UNILATERAL edentulous area located posterior to the remaining natural teeth. (aka “Single Distal Extension”)
Class II
Kennedy Class I and II are _____ and ______ borne
tooth and soft tissue
KENNEDY: Characterized by a unilateral edentulous area with natural teeth both anterior and posterior to the space.
Class III
KENNEDY: Characterized by a single bilateral edentulous area located anterior to the remaining natural teeth; the space must cross the midline.
Class IV
Kennedy Class III and IV are largely _____ borne.
TOOTH
Applegates Rules: Classification should follow rather than precede any ________ of teeth that might alter the original classification.
EXTRACTION
Applegates Rules: If a _______ OR a _______ is missing and not to be replaced, it is not considered in the classification.
third molar OR a second molar
Applegates Rules: If a third molar is present and is to be used as an _______, it is considered in the classification.
abutment
Applegates Rules: The most _______ edentulous area always determines classification.
POSTERIOR
Applegates Rules: Edentulous areas other than those determining the classification are referred to as ________ and are designated by number.
modifications
What do a majority of failures in RPD result from?
incomplete treatment PLANNING!
What is the required root to crown ratio for a SINGLE ROOTED tooth to be used as an RPD abutment?
1:1 crown to root ratio
What are the three classic consequences of COMBINATION SYNDROME?
1.Resorbed pre maxilla 2.Super erupted mand anteriors 3.extruded maxillary tuberosities
What are the two key landmarks that need to be captured in your final impression for a distal extension RPD?
hamular notches and retromolar pad
How many types of MAJOR connectors are there for each arch?
4 types for each arch
What RPD component joins both sides of the arch?
Major connector
What are the two types of DIRECT retainers?
Extra coronal and intra-coronal
Whats another name for a direct retainer?
a CLASP
What are the 4 parts to a direct retainer (clasp)?
1.rest 2.guide plate 3.retention arm 4.reciprocation arm
What are the three parts of a retainer clasp ARM?
Shoulder, Midsection, Terminus
TERM: Join smaller components to the major connector.
Minor connector
TERM: resists displacement away from the distal extention.
indirect retainer
An indirect retainer helps the RPD resist displacement AWAY from the _________
distal extension
What is the TERM for mesh/bars (open lattice) for retaining denture resin (and teeth)?
the BASE
What is the TERM for the junction of the resin and metal on an RPD?
Internal/External FINISH LINES
