1. Introduction Flashcards
Fixed Partial Prosthesis • Rigidly \_\_\_\_ to and supported by the \_\_\_\_ teeth • Not designed to be removed by the patient
Removable Partial Dental Prosthesis
• Supported entirely by ____ or both teeth and the tissues of the residual ridge
• Can be removed from the mouth and replaced by the patient
attached
abutment
teeth
Tooth-supported PRDP (Tooth-borne PRDP)
Denture bases supported by abutment teeth through the use of ____
rests
Tooth-tissue-supported PRDP - Has at least one denture ____ that extends anteriorly or posteriorly terminating in a denture base that is not ____ supported
Distal-extension PRDP (base extends posteriorly)
base
tooth
Retention for the partial removable dental prosthesis is provided primarily from the ____.
clasps
Maxillary Supporting Areas
Support is similar to dentures, it just depends where the edentulous areas are
Primary supporting areas are the ____
The depth of the fold is not providing support
Some secondary support in the ____ area
palate and ridge
anterior ridge
Mandibular Supporting Areas
Once again, utilizing our ____ as primary support
____ and genial tubercle are more secondary
Our ____ areas are generally undercuts so those areas tend to be relieved
buccal shelf
retromolar pad
ridge areas
retromylohyoid
We don’t make ____ prosthesis but they can loosen up and then get swallowed
unilateral
Indications for Temporary PRDP ◼ \_\_\_\_ ◼Mastication ◼Space \_\_\_\_ ◼Reestablishing occlusal relationships ◼Conditioning \_\_\_\_ and residual ridges ◼Interim restorations during treatment ◼Conditioning the \_\_\_\_ for wearing a prosthesis
appearance
maintenance
teeth
patient
Interim PRDP
◼An PRDP designed to be used for a ____ period until a more definitive prosthesis can be fabricated
◼Conventional interim PRDP
◼ Indicated when age, health or lack of time ____ more definitive treatment
◼Immediate interim PRDP
short
contraindicates
Transitional PRDP
◼An existing PRDP to which ____ are added as natural ____ are lost
teeth
teeth
Treatment PRDP ◼An existing PRDP used for --◼\_\_\_\_ the supporting soft tissues --◼determining \_\_\_\_ --◼determining a new \_\_\_\_
conditioning
OVD
occlusal relationship
In the 60s, 13% were edentulous as young as 18, and 55% as young as 65 but now it is ____%. So you will still be asked to make a lot of partials for people
35
Six Phases of PRDP Service
- Patient ____
- ____, Treatment planning, Design, Treatment sequencing & Mouth Preparation
- ____ for Distal Extension Denture Bases
- Establishment and Verification of ____ and ____
- ____ Procedures
- ____
education diagnosis support occlusal relations tooth arrangements insertion recall
Patient Education
◼Begin educating when discussing treatment options
◼Inform patient about
◼____ of PRDP
◼Proper ____ of prosthesis ◼Proper ____ habits
◼Emphasize importance of ____ appointments
◼Give ____ information
benefits use oral hygiene recall written
Diagnosis, Treatment planning, Design, Treatment sequencing and Mouth Preparation
◼Medical and dental \_\_\_\_ ◼\_\_\_\_ oral exam ◼ Caries ◼ Condition of existing restorations ◼ Periodontal health ◼ Responses of teeth to previous stress ◼ Vitality of remaining teeth
◼____ diagnostic casts
◼ Evaluation of the occlusal plane, arch form and occlusal relations of
the remaining teeth
◼____ design
◼____ of a treatment plan
◼ Sequencing of mouth preparation
histories clinical and radiographic mounted PRDP sequencing
The Dental Surveyor
◼Used during ____
◼Instrumental in diagnosing and guiding the appropriate tooth preparation and verifying that the mouth preparations have been performed correctly
treatment planning
Surveying Accessories
Part of it has an ____ rod that allows you to look at the model in one plane
We have led or graphite that puts contour marks on
Also have ____ gages
Also have a little knife that cuts wax
analyzing
undercut
Abutment
◼A tooth, a portion of a tooth, or a portion of an implant that serves to ____ and/or ____ a prosthesis
support
retain
The height of contour
◼A line encircling a tooth, designating its greatest ____ at a selected position determined by a dental surveyor
circumference
Undercut
◼That portion of a tooth that lies between the ____ and the ____
height of contour
gingiva
Support for Distal
Extension Denture Bases
◼The best possible support is provided when the soft tissue in the primary supporting area is recorded under some ____ so that the base may be made to fit the form of the ridge when under function
◼This minimizes the ____ forces to the abutment teeth
◼Altered cast impression technique- selective placement of pressure to the ____ stress-bearing area
loading
torquing
primary
Establishment and Verification of Occlusal Relations and Tooth Arrangements
◼The ____ records should be completed ____ the PRDP framework has been returned to the dentist, its fit to the abutment teeth and opposing occlusion have been verified and corrected and an altered cast impression has been made
MMR
after
Insertion Procedures
◼Ensure excellent ____ of the prosthesis
◼Ensure occlusal ____
◼Reinforce ____ instructions
◼Understand about expectations in the ____ phase
fit
harmony
home care
adjustment
Direct Retainer
◼Any type of clasp, attachment, device, etc. used for the ____, stabilization, or ____ of a prosthesis
◼ Intracoronal direct retainer
◼ Extracoronal direct retainer (clasp)
◼Resists the ____ displacement (removal) of the PRDP from the abutment teeth
fixation
retention
vertical
Major Connector
◼The part of a PRDP that connects the components on ____ side of the arch to the components on the ____ side of the arch
one
opposite
Maxillary Major Connectors
◼Single palatal ____ (posterior palatal bar)
◼Single palatal ____ (posterior palatal strap)
◼____ (U-shaped) palatal strap (anterior palatal strap)
◼____ palatal strap
◼Complete ____ plate
bar strap horseshoe antero-posterior palatal
Mandibular Major Connectors ◼ \_\_\_\_ bar ◼ \_\_\_\_ bar ◼ \_\_\_\_ plate ◼ \_\_\_\_ bar (Kennedy bar; Double lingual bar; Cingulum bar) ◼ \_\_\_\_ bar
lingual sublingual ligual continuous labial
Minor Connectors
“the connecting link between the ____ or base of a PRDP and the other ____ of the prosthesis (such as the clasp assembly, indirect retainers, and rests)
major connector
units
Functions of Minor Connectors
- To transfer ____ stress to the abutment teeth
- To ____ the effect of the retainers, rests, and stabilizing components to the rest of the denture
functional
transfer
Types of Minor Connectors
◼ Join a ____ to the major connector
◼ Join an ____ or a secondary rest to the major connector
◼ Join the ____ to the major connector
◼ Serve as an ____ for a vertical projection or bar-type clasp
clasp assembly
indirect retainer
denture base
approach arm
Rests and Rest Seats
Rest:
“a rigid extension of a PRDP which contacts a remaining tooth in a prepared rest seat to transmit ____ forces”
Rest Seat:
“the prepared recess in a tooth or restoration created to receive the ____, incisal, cingulum, or lingual rest” (GPT, 1999)
vertical
occlusal
Rests: Primary Purpose
◼Provides ____ for the PRDP
◼Directs and distributes occlusal loads apically down the ____ of the abutment teeth (absorbed by ____)
vertical support
long axis
PDL fibers
Three Forms Of Rests ◼Occlusal Rest --◼ \_\_\_\_ --◼ \_\_\_\_ --◼ \_\_\_\_
conventional
extended
overlay
Three Forms
◼Lingual Rest
–◼ ____
–◼ ____
◼____ Rest
cingulum
ball
incisal
Conventional Occlusal Rest
◼Forces are directed apically down the ____ of the tooth
◼ (absorbed by ____ fibers)
◼____
◼ prevents injury and over displacement of underlying soft tissue
◼Maintains retentive clasp in proper ____
long axis
PDL
vertical stop
position
Primary and Secondary Rests
◼Primary rest
◼component of direct
____
◼Secondary rest
◼additional rests used for indirect ____ or extra support
◼used in ____ extension PRDP
retainer unit
retention
distal
Proximal Plate
A rigid extension from the ____ which contacts the ____ surface of an abutment tooth
major connector or base
proximal
Indirect Retainer
“The component of a PRDP that assists the direct retainer (s) in preventing displacement of the distal extension denture base by functioning through ____ action on the opposite side of the ____ when the denture base moves away from the tissues in pure rotation around the fulcrum line” (GPT, 1999)
lever
fulcrum line
PRDP Base
◼Supports the artificial teeth and transfers ____ to the supporting structures
occlusal forces
Three Types of PRDP Bases
All acrylic resin base
◼ Seen in most ____ partial prosthesis
◼ The fit is never as ____ as a cast metal denture base
◼ ____ is more complicated
◼ ____ resin (lucitione 199) is the most commonly used resin and comes in a variety of shades
◼ May or may not be retained with clasps
Metal base
◼ Gold or chrome-cobalt
◼ Teeth are attached by means of ____, loops or beads
Combination of acrylic resin and metal base
◼ ____ adjusted, relined and rebased
temporary
accurate
oral hygiene
PMMA
posts
easily
Artificial Teeth
◼Prevent further disorganization of the dental arch
◼Restore masticatory efficiency
◼Restore and maintain ____ ◼Restore appearance
◼ Intraoral and extraoral ◼Improve ____
OVD
phonation
Clasp Assembly
◼ That part of an PRDP that acts as a ____ and/or ____ for a prosthesis by partially encompassing or contacting an abutment tooth
direct retainer
stabilizer
Clasp Assembly
◼ Retentive clasp arm
◼ provides ____; engages an undercut
◼ Reciprocal (stabilizing) clasp arm
◼ Resists ____ applied by retentive clasp arm
◼ Rest
◼ Occlusal; incisal; lingual
◼ Prevents ____ movement of clasp assembly
◼ Minor connectors
◼ the connecting link between the base of the PRDP and the ____
retention
lateral force
cervical
clasp assembly
Fi xed vs PRDP: When to use PRDP? Edentulous span too \_\_\_\_ for FDP Significant alveolar ridge \_\_\_\_ and mid third of face must be supported \_\_\_\_ andother maxillofacial defects Ver y \_\_\_\_ patient Finances
long
loss
cleft palate
young
