The document discusses evaluating the fit of a partial denture framework. It can be summarized as follows: 1. Both extraoral and intraoral evaluations of the framework are important to check for any defects or areas that may interfere with proper fitting. 2. When fitting the framework intraorally, the most common areas that can interfere are undercuts, rigid portions of retainers, interproximal portions of connectors, and shoulder areas of clasps. 3. Disclosing media is used to locate small areas of interference, and the framework should be adjusted until it is fully seated with no interferences found.

1. tryin of RPD
Even the best partial denture frameworks do
not fit perfectly in the mouth.
75% of all frameworks may not fit the
mouth on the day of insertion

2. Framework Evaluation
A] Extraoral evaluation of the
Framework
B] Intraoral evaluation of
the Framework
Indications:
A. Evaluation of Esthetic, and phonetic characteristics of the
prosthesis. If anterior
teeth are being replaced, an esthetic try-in is essential.

3. A] Extraoral evaluation of the Framework
a- Check the framework on the master cast
b. Inspect the framework off the master cast:
1- Cheek for abraded areas of the master cast
2- PD component
3- The finishing and polishing of the
framework
4- Presence of defects
C - Radiographic evaluation;

4. B] Intraoral evaluation of the Framework
1-Seating the framework (Checking fit):
The framework may fit the cast but does
not fit in the mouth, due to
A distorted impression,
An improperly poured cast,
An abraded cast, and/or
Shifting teeth.

5. The most common areas that interfere with seating
are:
1. under rests
2. rigid portions of direct
retainers (e.g. above the survey
line)
3. interproximal
portions oflinguoplate
major connectors
5.
shoulder
areas of
embrasur
e clasps
4. interproximal minor
connectors

6. To locate small areas of the framework that are interfering with
the fit,
d) Some type of disclosing
medium is needed. See later
By visual and tactile examination
b) A probe may
also be used to
check the
closeness of fit of
any elements
contacting
the teeth.
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c) The patient
should be
questioned as
to whether or
not they feel
any
discomfort

7. The fitting of the framework to the mouth
should be done in three phases:
(a) Fitting the
framework to the
abutment teeth,
(b) Fitting the
framework to the
soft tissue, and
(c) Adjusting the
framework to the
opposing occlusion

8. PART
02

9. TRIAL PARTIAL DENTURE BASE TRY-IN
EXTRAORAL
EXAMINATION:
INTRAORAL
EXAMINATION
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10. INTRAORAL EXAMINATION
3
2
1
6
4
5
B. Esthetic try-in:
A. Checking extension, retention
and stability
C. Jaw relation try-in
(VERIFICATION OF JAW
RELATION) :
D. Checking phonetics
E. Verification of waxing up
F. patient approval

11. B. Esthetic try-in:
85%
63%
78%
55%
1- Abnormal
fullness
2-Teeth
length
3- Short
space
4-Large spac
5- Overlap of the anterior
teeth.
6-Vertical alignment of
the teeth also should be
evaluated.
7- Tooth shade.

12. C. Jaw relation try-in (VERIFICATION OF JAW
RELATION) :
e jaw relation need be verified specially
certain cases:
1. If doubt exists as to whether the recorded jaw
relationship is accurate.
2. If the partial denture is opposed by
complete denture
3. If all posterior teeth in both arches are
being replaced.
4. If there an: no opposing natural teeth in
contact.

13. D. Checking phoneti
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Closest speaking space of 1 –
1.5 mm
Thickness of palate is
important
Maxillary incisors should make fricative “f” and
“v” sounds at the wet/dry line of the
lower lip . “s” sound is most important
Lisping indicates too much
room

14. E. Verification of waxing up
assess proper shaping and contour of
polished surface
checking peripheral extension
proper labial fullness

15. PART
3

16. Disclosing media
KEYS
Ideal requirements of disclosing media
Easy to apply
Easy to manipulate intraorally
Not need time to set
Easy to read
Easy to remove from the
framework
No potential for false positive
results

17. 1. Rouge and
alcohol:
2. Disclosing wax
3. Silicone impression
materials
Types of disclosing
media
4. Spray type Powders (Occlude):

18. Clinical Adjustment
Pressure indicating paste , rouge dissolved in chloroform or
disclosing waxes are
used as follows :
a-The disclosing material is placed on all framework surfaces that will contact the
teeth
b- The framework should be aligned over the abutment teeth
and finger pressure
applied in the direction of the planned path of insertion .
The located areas of interference , should be
relieved by grinding
The entire procedure is repeated until the framework is seated .

19. C U T E
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