kennedy class |V design Flashcards
Characteristics of a Kennedy Class |V
- Bounded saddle anterior to abutment teeth
- Crosses the midline
- NO modifications
- Aesthetics main motivating factor
What are alternatives to RPD ?
- fixed bridgework
- implant retained restorations
advantages of fixed bridgework
- well tolerated
- hygienic
- no clasps
- may have very good aesthetics
disadvantages of fixed bridgework
- extensive prep of abutments
- cannot be altered
- require high level of operator/ technical skill
implants retained restoration disadvantages
- surgery
- requires an alveolar ridge
- takes time
- expensive
- can’t place an implant on smokers
Design problems with kennedy class |V?
- Retention
- Support
- Indirect retention is very important
- displacement by lower teeth when the patient closes
- space for a connector - where there is a deep overbite
Short term design of dentures for kennedy class |V
- Modified spoon using PMMA
How do we get assisted retention and restore lip support where resorption has occurred?
Anterior flange
Which type of patient usually has lower jaw denture?
- older patients due to periodontal disease
CoCr lower denture K |V designs
lingual bar
sub lingual bar
dental bar
plate
PMMA lower denture K |V designs
plate - temporary measure or if poor prognosis of the remaining teeth
Lingual Bar
- requires accurate, correctly extended lingual sulculus impressions
- hygienic
- well tolerated
what measurement do lingual bars require away from the lingual sulcus
Min 7mm depth of the lingual sulcus
What is the height of the lingual bar
4mm
