An anterior fixed partial denture is contraindicated when.. There is considerable resorption of the residual ridges

An anterior fixed partial denture is contraindicated when:

• a- Abutment teeth are not carious.
• b- An abutment tooth is inclined 15 degrees but otherwise sound.
• c- There is considerable resorption of the residual ridges.***
• d- Crown of the abutment teeth are extremely long owing to gingival recession.

anatomo-physiological disorders:

The practitioner frequently receives in consultation edentulous total patients with flat or negative mandibular crests with all the resulting anatomo-physiological disorders. Achieving prosthetic stability is seen as a challenge to overcome.