Denture try in Flashcards
1
Q
What should you check before inserting the try in?
A
- are the try in bases stable on the cast
- are the borders smooth, rounded with no sharp edges
- is the borer extension shaped to the width and depth of the sulcus
- are the centre lines correct
- is there proper contact with the pin on the table
- are the teeth set in the correct position eg over the ridge in the mandibular
- correct shade and mould
- has the post dam been cut
2
Q
What should you check when you put in the try in?
A
- retention and stability
- base extensions
- LIMBO
- position of teeth
- vertical dimension and FWS
- even contacts
- speech
- aesthetics
3
Q
How should you assess the try ins?
A
- assess individually then together
- allow time to settle
- moisten before inserting
- insert mandibular before maxillary
4
Q
How do you assess retention and stability?
A
- manipulate soft tissues and ask patient to speak
- will not be as good as final denture (due to wax)
- ensure effective communication with patient regarding this
5
Q
How do you assess base extension?
A
- hold the tissues away from denture, if it drops then likely underextended
- manipulate the tissues, if it drops then likely overextended
- if there is too much lip support then it will drop
6
Q
How do you assess LIMBO?
A
- lip support
- incisal level
- midline
- buccal corridor
- occlusal planes (anterior/posterior)
7
Q
How do you assess position of teeth?
A
- ensure teeth are in the neutral zone
- mandibular teeth should be set over the ridge
- maxillary teeth should be set just buccal to the ridge
8
Q
How do you assess vertical dimension?
A
Ensure patients FWS has not changed dramatically from previous denture or from what is comfortable for them
9
Q
How do you assess speech?
A
- ask patient to speak, ensuring all different sounds are checked including f, v, s, sh etc
- teeth should be slightly apart when speaking
10
Q
How do you assess aesthetics?
A
- allow patient to look in the mirror, leave them alone to form their own appearance
- get specifics if there is an aspect they do not like
- reassure that try in gingiva is much redder than final
11
Q
What are the options if something is wrong with the denture at try in?
A
- re-try appointment
- correct at chairside
- prescribe for the lab to make a change before finish
- correct at insertion appointment
12
Q
How do you correct the teeth touching during speech?
A
- insufficient FWS
- OVD needs to be reduced
- re-reg jaws and lab will reset all teeth except the upper anteriors
13
Q
How do you correct a whistling sound during the āsā sound?
A
- OVD may need to be increased or anterior tooth position changed
- re-reg jaws and lab will reset all teeth
14
Q
How do you correct the incorrect mould or shade?
A
- choose again
- prescribe to lab to reset
15
Q
How do you correct the incorrect midline?
A
- mark new midline
- prescribe to lab to reset with same teeth
