The Single Denture Flashcards
the most common situation (2)
Maxillary arch is edentulous
Mandibular arch has natural / restored teeth
natural teeth opposing a CD (4)
natural teeth generate greater chewing force against opposing denture
natural teeth do not move in function as denture does
cannot control placement of opposing teeth
drifting/tilting puts natural teeth far from optimal positions
centripetal resorption (2)
Routine resorption pattern following
extraction of teeth results in a smaller maxilla
when compared to dentate arch.
Maxilla resorbs UP and INWARD!
arch discrepancy (2)
a horizontal arch discrepancy is created when the max arch narrows and becomes shorter in the AP direction
a crossbite may be required to direct occlusal forces to the bearing area
uncontrolled occlusal forces
Maxillary CD opposed by mandibular
anterior natural teeth:
“THE COMBINATION SYNDROME”
“THE COMBINATION SYNDROME”
(5)
max ant tissue mobile/hyperplasia
inflammatory palatal hyperplasia (IPH)
max tuberosities enlarged
mand poster bone resorption
mand anterior teeth supraerupted
curve of monson
(4)
combo of curve of spee and wilson
coronal and sagittal planes
concave for the mand arch and convex for the max arch
the CO form a segment of a sphere of 4 inches radius with the center of the sphere at the glabella
occlusal plane
reduce restore remove
occlusion on the single denture
Interdigitation……cusp in fossa
occlusion
a reciprocal arrangement of elevations and depressions
single denture fractures
Biting force of natural dentition is approx 5
times that of the denture wearers (160 vs 35
lbs)
the edentulous mandible opposing max natural dentition
Rapid loss of mandibular alveolar bone
natural/edentulous mandible (3)
Discuss the likely poor outcome
Resilient liner in mandibular denture
Osseointegrated implants in mandible
Mandibular anterior resorbs approx – times
as fast as maxillary anterior
4
Rapid bone loss emphasizes the need for any
procedure which will
slow the bone loss.