Dr. Waseem Mushtaha Removable prosthodontic Al azhar university Gaza Lama El Banna

1. Tooth selection for partial
denture
Dr. Waseem Bahjat Mushtaha
PhD in prosthodontics

2. Types of teeth
I-Acrylic denture teeth:
Advantages:
l-God bond with denture base resin.
2-Easily recontoured and polished.
3-May be used when space is limited.
4-Reduce wear of opposing restorations and natural teeth.
5-Reduce the stresses transferred to the ridge by it resilience.
6-Good esthetics.
Disadvantages:
l-Law abrasion resistance.
2-May stain during use.

3. Acrylic denture teeth on
class IV RPD
.

4. Acrylic posterior denture
teeth used on RPD.

5. Porcelain denture teeth:
Advantages:
1-Increases abrasion resistance.
2-Increased stain resistance.
3-Natural appearance.
Disadvantages:
1-Abrade the opposing natural and artificial teeth.
2-Cannot be used in close bite cases.
3-More susceptible to fracture.
4-Mechanical bond is required to denture base
resins.
5-Polishing of ground surfaces is difficult.
6-Clicking during function.

6. Porcelain denture
teeth are rarely
used since they
are difficult to
set.

7. III- Facings:
In anterior teeth is to be replaced metal packing with
porcelain or resin facing may be used. It is usually used
with metallic denture bases.
Advantages:
1-Metal packing increase strength.
2-Can be used when there is insufficient interocclusal space
to use resin to retain denture teeth.
Disadvantages:
1-May exhibit flat appearance, lacking of depth.
2-Metal backing may affect shade.
3-DifficuIty in fabrication of metal backing due to occlusion
and articulation.

8. Gold occlusal surfaces added to
acrylic denture teeth opposite fixed
partial denture gold occlusal
surfaces to even out wear potential

9. Occlusal chrome surfaces on this maxillary
class III RPD are an extension of the
framework. Acrylic facings are placed on
the buccal for esthetics.

10. IV- Tube teeth:
It is an acrylic or porcelain teeth in the form of a tube have a
channel in its base to fit a post on the metal framework.
Advantages:
1-Used as a single anterior or posterior tooth replacement,
where space is available, with good esthetics
2-No need for flasking and processing the denture teeth. The
tube teeth are cemented to the metal posts.
Disadvantages:
1-it requires enough space mesiodistally and
occlusogingivally.
2-lt is used with metallic denture base, which cannot be
relined.

12. posts on the metal framework

13. V- metal teeth:
Advantages:
1-Can be used where space is limited for
posterior teeth replacement.
2-Increased resistance to fracture and
abrasion
Disadvantages:
1-May be unaesthetic; acrylic or composite
veneer will improve it.
2-Difficult to adjust occlusion and
articulation.

14. Factors affecting selection of RPD teeth:
1-The size, form and shade should resemble that of remaining natural
teeth.
2-Amount of available space; artificial teeth are placed within the.
available space incisogingival and mesiodistal.
3-Mechanical properties;
the anterior teeth selection is affected by the opposing occlusion,
abrasion resistance, resistance to fracture, bond strength to denture
base and ease of adjustment.
4-Cusp height of opposing teeth; cusp height of the artificial teeth should
be equal to or slightly greater than the opposing teeth.
5.Condition of the supporting tissues in distal extension base; If it is poor
the occlusal forces is reduced by:
a-Using a small teeth fuciolingually.
b-Decreasing the number of posterior teeth.
C-Space teeth with diastimas.
d-Sharpining of the occlusal surface to increase the masticatory
efficiency.
e-Using acrylic teeth.