T4: Complete dentures opposed by Natural Teeth Flashcards
1
Q
Why having natural teeth in lower jaw might be tough?
A
- presence of natural teeth mean that high force levels can developed against upper maxillary edentulous ridge
- may lead to trauma and instability of dentures
2
Q
Trauma to denture bearing area
A
Abuse of soft tissues
- mucous membrane damage
- ulceration and discomfort
Alveolar resorption and fibrous tissue replacement
- fibrous/ flabby ridge
3
Q
Fibrous ridge
A
- tissue displaceability
- tipping of prosthesis
4
Q
Combination syndrome
A
- bone loss from anterior part of maxillary ridge
- hypertrophy of tuberosities
- papillary hyperplasia in hard palate
- extrusion of mandibular anterior teeth
- bone loss under denture base
5
Q
How do reduce trauma to maxillary denture bearing area
A
- maximise coverage of denture bearing area by prothesis
- ensure prosthesis covers primary load bearing sites
6
Q
How to achieve stability of maxillary denture
A
- optimum border seal
- effective post dam
7
Q
Effect of absence of posterior teeth to stability of dentures
A
- all force goes on anteriorly
- break border seal and denture drops
- normally affecting when pt is eating and will need lots of fixadent
8
Q
Bilateral free end saddle - class 1
A
9
Q
How to manage deep anterior overbite?
A
- reduction of incisal edges of natural teeth
- siting of denture teeth
10
Q
Management of Irregular Occlusal plane on natural teeth
A
- no adjustments
- minimal localised occlusal grinding
- radical occlusal adjustment
- extraction of teeth
- overlay appliances
11
Q
Overlay appliances
A
12
Q
Complete lower denture with upper natural teeth
A
- problems much more severe
- significant trauma to lower ridge
- soft linings can help but unpredictable
