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

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2
Q

What supports the buccinator and orb. oris?

A

teeth and alveoli

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3
Q

What happens to mouth/lip area in edentulous pts?

A

curtain collapses

toothless look

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4
Q

What muscles have an effect on the denture here?

A
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5
Q

What is the modiolus?

A

area where extrinsic perioral muscles decussate to join intrinsic fibres of the orb. oris

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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

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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

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