RPD Flashcards
ARTIFICIAL REPLACEMENT of the missing part of the human
PROSTHESIS
ridge form is of less sign/ficance than it is for thetooth- and tissue-supported prosthesis.
TOOTH-SUPPORTED
jaw relation records should be made only after the best possible support is obtained for the denture base
DISTAL EXTENSION
branch of Dentistry pertaining to MAINTENANCE and RESTORATION of oral function, comfort, health and general appearance of patient by REPLACING missing tooth or teeth and its contagious structure with an ARTIFICIAL SUBSTITUTE.
PROSTHODONTICS
Resists VERTICAL forces of dislodgement
RETENTION
Quality of a prosthesis to be firm, stable, or constant and to resist displacement by FRICTIONAL, HORIZONTAL, or ROTATIONAL stresses
STABILITY
Receive all their support from the ABUTMENT TEETH
TOOTH-SUPPORTED (borne)
Supported at one end by NATURAL TEETH, which essentially does not move, and at the other end by the DENTURE BEARING TISSUE (mucosa overlying bone) which moves because of the resiliency of the mucosa
TOOTH-TISSUE - SUPPORTED (borne)
- Base extending posteriorly on a removable partial denture
DISTAL EXTENSION PARTIAL DENTURE
a tooth, a portion of a tooth, or that portion of an implant that SUPPORT RETAIN a prosthesis.
Abutment
portion of the RESIDUAL BONE and its SOFT TISSUE covering that remains after the removal ofteeth
Residual Ridge
JOINS the components on one side of the arch to those on the OPPOSITE side
MAJOR CONNECTOR
CONNECTING LINK between the MAJOR CONNECTOR or base of RPD prosthesis and the OTHER UNITS of the prosthesis
MINOR CONNECTOR
Used to RETAIN and PREVENT DISLODGEMENT
DIRECT RETAINER
PREVENTS or RESISTS MOVEMENTS or ROTATIONS of the base away from residual ridge
INDIRECT RETAINER
a rigid extension of RPD which contacts a tooth to DISSIPATE FORCES.
REST
FLEXIBLE SEGMENT that engages an undercut on an abutment and is designed to retain the denture.
RETENTIVE ARM
resist tooth movements in response to the retainer arm.
RECIPROCAL ARM
COVERS the residual ridges and supports denture teeth
DENTURE BASE
HEIGHT OF CONTOUR
the measurement of a tooth from the lingual to the vestibular surface at its GREATEST BULGE
MOST WIDELY ACCEPTED CLASSIFICATION OF PARTIALLY EDENTULOUS ARCH
KENNEDY’S CLASSIFICATION
KENNEDY CLASSIFICATION
- Proposed by Dr. Edward Kennedy in
1925
Bilateral edentulous area is located posterior
to the natural teeth
CLASS I
Unilateral edentulous area located posterior to the remaining natural teeth
CLASS II
Unilateral edentulous area with natural teeth remaining both anterior and posterior to it
CLASS III
Single, but bilateral (crossing the midline), edentulous area located anterior to the remaining natural teeth
CLASS IV
resistance to VERTICAL seating forces
SUPPORT
resistance to HORIZONTAL dislodging forces
STABILITY
resistance to VERTICAL dislodging forces
RETENTION
FUNCTIONS OF MAJOR CONNECTOR
UNIFICATION
STRESS DISTRIBUTION
CROSS-ARCH STABILIZATION (COUNTER
LEVERAGE)
What type of maxillary major connectors used primarily in tooth- supported (Kennedy Class III) RFDs
SINGLE PALATAL STRAP
Class I & II arches with excellent abutment and residual ridge support
2. Long edentulous span Class II
3. Class IV arches
ANTERIOR-POSTERIOR PALATAL STRAP
- Relatively broad anterior and posterior strap
- Lateral straps
- Clearance from gingival crevices
- Palatal opening should be _____ or more in anteroposterior dimension
- (8-10mm)
- (7-9mm)
- (6mm)
- 15 mm
What type of maxillary major connectors used Primarily indicated in Kennedy Class I arch forms where only the anterior teeth (or anterior teeth plus one or more premolars) remain
PALATAL PLATE CONNECTOR
What type of maxillary major connectors Locks rigidity
2. Fails to provide good support characteristics
3. Increased thickness in areas that are hindrance to the tongue
U-SHAPED PALATAL CONNECTOR
