Complete Denture Dent 482.01 and

1
Setting Anatomic Posterior Teeth
2
(No Transcript)
3
These are the molds of teeth you should be
using in this course (32M post., 4N max. ant., 2N
mand. ant.).
4
Remove a section of wax from one side of the
maxillary baseplate between the canine and the
second molar position. Leave a posterior pillar
of wax in the 2nd molar area. A quick look will
verify that the maxillary posterior teeth should
have plenty of space to be set with little or no
reduction. Reduce the baseplate if necessary, and
if that is still not enough, reduce the ridgelap
area of the teeth. Set the first premolar in
proper buccolingual position.
5
The rim is left intact on the opposite side
because this will help you to maintain the
location of the occlusal plane. The pillar of wax
that is left on the side where the teeth are to
be set preserves the occlusal plane in this area
and facilitates the setting of the 1st premolar
and 1st molar on this plane. The posterior teeth
are first set flat to the occlusal plane and with
their central grooves aligned over the mark on
the center of the mandibular ridge.
6
Once these two teeth are set, the pillar is
removed and the 2nd molar is set to this plane
that is preserved by these teeth and the wax rim
on the opposite side. The second molar is set
flat with the plane and along the same plane
buccally that was established with the position
of the 1st molar. A tongue blade is used to
ensure that the 2nd molar lies along this buccal
plane.
7
A tongue blade is used to verify that the
buccal cusp of the maxillary premolar and the
mesiobuccal cusp of the first molar lie along a
plane with the middle of the facial surface of
the Canine. A tongue blade is also used to verify
that the buccal cusps of the 1st and 2nd molars
lie along a plane that is defined by turning the
distobuccal cusp of the 1st molar 20o toward the
palate.
8
The setup is checked from the posterior to
ensure that the central groove of the 2nd molar
is exactly over the crest of the mandibular ridge
as defined by the mark on the mandibular occlusal
rim.
9
A tongue blade is then used to depress the
distobuccal cusp of the 1st molar so that it lies
½ mm above the plane. The same procedure is used
to depress the buccal cusps of the 2nd molar so
that they lie along this same plane, and that the
mesiobuccal cusp is 1 mm above the occlusal plane
and the distobuccal cusp is 1½ mm above the
plane. The lingual cusps will be left extending
down toward the occlusal plane.
10
When the plane is done properly, the maxillary
1st molar will provide the guide for the occlusal
surface of the 2nd molar. All cusps of both
molars should contact this plane.
11
Check this relationship with the opposing
occlusion rim and the flat plate. There should
be a noticeable rise in the occlusal plane from
the distobuccal of the first molar through the
second molar. All other teeth should be touching
the plate except for the maxillary lateral
incisor.
12
Anterior teeth with anatomic posterior
teeth are set to have a vertical overlap equal to
the compensating curve.
13
After the maxillary teeth are adjusted to
provide the compensating curve, the buccolingual
position of each posterior tooth is rechecked to
ensure that it is still correct, as the shrinkage
of the wax as it sets and contact of the teeth
with the baseplate will have an effect on the
position that a tooth can be stabilized. The
mesiobuccal cusp of the 1st molar is in contact
with a plane that runs to the midbuccal of the
canine, with the premolar also in contact with
this plane.
14
(No Transcript)
15
?
?
?
?
?
?
?
?
?
?
?
?
?
Questions?
Questions?
Questions?