Classification of Partially Edentulous Arches.ppt

Classification of Partially Edentulous Arches

1. Classification of Partially
Edentulous Arches

2. Requirements of a
classification
Immediate visualization
Immediate differentiation
Guide to type of design
Universally acceptable

3. Soft tissue supported
Tooth tissue supported
Tooth supported

4. Kennedy’s classification

5. Class I-Bilateral edentulous areas located
posterior to the natural teeth

6. Class II-A unilateral edentulous area
located posterior to the remaining
natural teeth

7. Class III-a unilateral edentulous area
with natural teeth remaining both
anterior and posterior teeth

8. Class IV-a single ,but bilaterally (crossing the
midline), edentulous area located anterior to
the remaining natural teeth

9. Class V-an edentulous area bounded
anteriorly and posteriorly by natural
teeth but in which the anterior
abutment is not suitable for support
Class VI-edentulous situation in which
the teeth adjacent to the space are
capable for of total support of the
required prosthesis

10. Applegate’s modification

11. Rule 1:
Classification should follow rather than
precede any extractions of teeth that
might alter the original classification

12. Rule 2:
If a third molar is missing and not to be
replaced it is not considered in the
classification.

13. Rule 3:
If a third molar is present and is to be
used as an abutment it is considered in
the classification

14. Rule 4:
If a second molar is missing and is not
to be replaced it is not considered in
the classification.

15. Rule 5:
The most posterior edentulous area
always determines the classification

16. Rule 6:
Edentulous areas other than those
determining the classifications are
referred to as modifications and are
designated by their number.

17. Rule 7 :
The extent of the modification is not
considered, only the number of
additional edentulous areas

18. Rule 8:
There can be no modification areas in
Class IV arches. Any modification areas
lying posterior to the single bilateral
area determines the classification.