Prostho 37-43

Question 1

37. Classification of partial edentulousness according to Fabian-Fejerdy

Answer 1

the aim of the classification is to help denture design.
It is established on the possibilities of the standing teeth for the dental support and anchorage of the planned denture,
if a torque arises on the inserted prosthesis,
where the torque is, and
whether the denture sinks or rocks.

The Fábián and Fejérdy classification of partial edentulousness is characterized by the following statements:
- it differentiates the upper dental arch from the lower one
- there are 3 main classes, has a subtotal class
- gives instructions for treatment.
It has a good functional aspect.

Question 2

38. Fabian-Fejerdy classification class 1A

Answer 2

There can be 1 or more primary fulcrum lines,
but after the prosthesis is inserted none of these becomes an actual rotational axis,
torque does not arise on the axis of rotation,
and the prosthesis doesn’t sink in any direction.
Dental support is possible

Question 3

39. Fabian-Fejerdy classification class 1B

Answer 3

There can be 1 or more primary fulcrum lines,
from which one can become an real axis of rotation after the prosthesis is inserted.
The moment of rotation is small, so the sinking of the tooth supported denture can be compensated for.
There is a torque, but it can be compensated for, if we use more abutments for the anchorage.
Fix prosthesis can be made.

Question 4

40. Fabian-Fejerdy classification class 2A

Answer 4

There can be 1 one primary fulcrum line, but one or more secondary fulcrum lines.
After inserting the denture, the primary axis of rotation may turn in an actual axis of rotation,
and the denture rotating around this axis may sink in one direction.
Tooth and mucosa support.
The remaining teeth or the edentulous ridge is in one block.
A removable partial denture can be made.

Question 5

41. Fabian-Fejerdy classification class 2A/1

Answer 5

There is only 1 fulcrum line,
and this primary fulcrum line becomes a real axis of rotation after the denture is inserted,
the denture rotating around this axis, may sink in one direction.
Mucosa and tooth supported.
Long edentulous ridge, subtotal edentulousness.
A removable partial denture can be made.

Question 6

42. Fabian-Fejerdy classification class 2B

Answer 6

There can be 2 or more primary fulcrum lines,
from which one may become a real axis of rotation after the denture is inserted.
The denture rotating around this axis may sink in one direction.
The remaining teeth aren’t situated in one block,
combination of free end saddle and short span ridges.
A removable partial denture can be made.

Question 7

43. Fabian-Fejerdy classification class 3

Answer 7

There can be 1 or more primary fulcrum lines,
from which one or more may become a real axis of rotation after the denture is inserted,
the denture rotating around them can sink in two directions, and it may rock.
Mucosa and tooth supported.
Very long edentulous ridges, teeth are situated diagonal.
A removable partial denture can be made.