Anatomy and histology of the denture bearing area - Dentistry ...

• Fovea palatinae
These are a pair of mucous gland duct orifices
near the midline at the junction of the hard and
soft palate.
These landmarks provide a guide to the position
of the posterior palatal border of a denture.
• Incisive papilla
Incisive papilla is a mass of fibrous tissue about 1
cm behind the upper incisors.
Its position in the edentulous mouth indicates
where the incisors and canines should be set.
Facial curtain
The orbicularis oris and buccinator muscles
are draped around the mouth to form a
curtain, which is supported by teeth and
alveoli.
In edentulous patients, this curtain collapses
to give the characteristic toothless look.
Maxilla and mandible
There is difference in resorption pattern for
maxilla and mandible.
This leads to the appearance of prognatism
and gross positional discrepancies between
opposing residual ridges.
Muscles limiting the extension of
a upper denture
• Anterior labial flange
Anterior labial flange is limited by the
orbicularis oris as far as the first premolar
region.
• Buccally
From the second premolar region
posteriorly, the buccal flange is limited by
the buccinator.
Collapse of elevator and depressor muscles
and modiolus following loss of teeth
Edentulous face
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