Anatomy of Denture bearing Area - Face Flashcards
1
Q
What muscles to conmsides with respect to face?
A
orbicularis oris and buccinator
they are draped around the mouth to form a curtain
2
Q
What supports the buccinator and orb. oris?
A
teeth and alveoli
3
Q
What happens to mouth/lip area in edentulous pts?
A
curtain collapses
toothless look
4
Q
What muscles have an effect on the denture here?
A
5
Q
What is the modiolus?
A
area where extrinsic perioral muscles decussate to join intrinsic fibres of the orb. oris
6
Q
What is the significance of the modiolus when it comes to RPD?
A
very forceful area which can influence the labial flange thickness of the denture
7
Q
Red and blue lines?
A
blue: anatomy depth, want to be 2mm short of the red line
red: functional depth of sulcus
avoid muscles or bony areas
