Classification of Edentulous Ridges for Fixed Partial Dentures
In Diagnosis and treatment planning of Fixed Partial denture fabrication
the most important part is the classification of the edentulous ridges
of the patient which helps us in determining the type of FPD we are
going to use in the patient.
Classification of Edentulous Ridges for Fixed Partial Dentures Bridge1
Class I: It is a ridge with loss of faciolingual width, with normal apicocoraonal height. It constitutes 32.4% of the edentulous ridges.

Class II: It is the ridge with loss of ridge height with normal ridge width.

Class III: It is the ridge with loss of both height and width.

Class IV: It indicates Normal Ridges.