Term
| define removeable partial denture: |
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Definition
- a prosthesis that replaces tooth/or teeth in a partially dentate arch
- it can be removed from the mouth and replaced at patients will
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Term
| What are the tx options for replacement of missing tooth or teeth? |
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Definition
- no treatment
- implant supported restoration
- FPD (bridge)
- RPD
**FPD is usually the tx of choice |
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Term
| what are 10 indications for using an RPD? |
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Definition
- long edentulous span
- absence of adequate periodontal support
- structurally and anatomically compromised abutments
- need for cross-arch stabilization
- distal extension
- need to restore soft and hard tissue contours
- anterior esthetics
- age and health
- attitude and desires of pt
- ease of plaque removal
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Term
What % of the current population is 65 or older?
In the year 2030? |
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Definition
right now - 13%
2030 - 26% |
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Term
How many units of removeble cases are required to graduate?
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Definition
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Term
| what aspects of having some teeth remaining make creation of RPD more difficult than CD? |
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Definition
- reduced VDO
- occlusal plane discrepancy
- unstable centric occlusal contacts, loss of posterior support
- compromised esthetics
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Term
| what are the two main goals of RPD: |
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Definition
- stabilize the individual arch and protect remaining structure
- organize interarch functon (VDO, occlusal plane, centric) and esthetics
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Term
| well designed RPDs have what 3 qualities? |
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Definition
1. provide cross-arch support
2. unite the remaining teeth
3. restore function and control direction of the force onto remaining teeth and tissue |
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Term
| arches need to be controlled along what three aspects? |
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Definition
vertical dimension
centric
occlusal plane |
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Term
| who is the guy with the weird name that came up with the I-bar techique and taught Beumer? |
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Definition
James Kratochvil
(and Theodore Berg) |
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Term
| An RPD is not a space-filling appliance, it is: |
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Definition
| a biomechanical prosthesis |
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Term
What are the 5 parts of a well designed RPD?
**in order of design sequence** |
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Definition
- Rests
- Major Connectors
- Minor Connectors/Proximal Plates
- Denture Base Connectors
- Retainers
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Term
|
Definition
| resistance to occlusal or vertical seating forces |
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Term
|
Definition
| resistance to horizontal or torsional seating forces |
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Term
|
Definition
| resistance to vertical dislodging forces |
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Term
| what parts of an RPD provide support? |
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Definition
rests
major connectors
denture bases |
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Term
| what parts of an RPD provide stability? |
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Definition
proximal plates
bracing clasp arms
lingual plates
rests
denture bases |
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Term
| what parts of an RPD provide retention? |
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Definition
direct retainers
proximal plates on the RPD
indirect retainers |
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Term
| what are some examples of impt things to look for intraorally during a diagnosis exam for RPD |
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Definition
hard tissue AND soft tissue elements:
- denture bearing surface
- frenum location
- amt of attached gingiva
- height of soft tissue contour
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Term
| what aspects are involved in evaluating abutment prognosis when looking at radiographs? |
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Definition
Restorative Aspect
Periodontal Aspect
Prosthodontic Aspect
Is the abutment helping or hindering the RPD?
Is it reliable or not? |
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Term
| What 6 things are essential to gather during diagnosis and tx planning for RPD pt? |
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Definition
- Patient eval
- Hx
- Oral Exam
- Habits
- Radiographs
- Mounted Diagnostic Casts - CR record at proper VDO
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Term
| what is the first step in achieving successful diagnosis and tx plan for our pts? |
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Definition
| a set of good study casts obtained by getting good alginate impressions |
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Term
| what are the goals of the alginate impressions for study casts? |
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Definition
- Record all remaining teeth and surrounding ST surfaces
- surfaces that contact the future RPD framework
- occluding tooth surfaces
- critical landmarks: retromolar pads, hamular notch, vestibular depths and edentulous regions, and lingual frenum attachment
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Term
| what thickness of aliginate is desired? |
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Definition
|
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Term
for regular set alginate:
mixing time:
total working time:
intitial setting time:
setting time: |
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Definition
mixing time: 60 sec
total working time: 2min15sec
intitial setting time:2min30sec
setting time: 3min30sec |
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Term
| how thick should the bases be for study casts |
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Definition
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Term
| how long should you wait before separting the impression from the cast? |
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Definition
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Term
| how wide should the land be on the study casts? |
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Definition
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Term
what are MOST impt for providing each of the following:
support
stability
retention |
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Definition
support --> rests
stability --> proximal plates
retention --> direct retainers aka I-bar or C-clasp |
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