Beckett & Wilson’s classification
They decided that the following must be considered while determining the proportionate amount of support provided by the teeth & tissue. Tissues includes mucosa and underlying bone.
a)the quality of abutment support.
b)the magnitude of occlusal support.
c)the harmony of the occlusion.
d)the quality of the mucosa &residual ridge.
abutment teeth qualified to support the denture.
mucosa is not used for support.
a)tooth-&- tissue- borne
abutment teeth not so qualified to support the denture as described in class I.
Wilson in 1957 elaborate the classification as follows:
- Mandibular Kennedy’s class III should be treated as class I
- Maxillary Kennedy’s class III should be treated as class I or III