What is Ridge morphology
The implant-supported prosthesis is affected by the ridge morphology especially implant-supported overdentures which gain dual support from implants and edentulous ridges. Alveolar ridge shape may be classified related to retention.
The ideal ridge form (square) has high, broad parallel walls, which also improve lateral stability.
A flat, atrophic ridge provides poor retention and stability but adequate support for the maxillary denture.
The least stable is the V-shaped ridge at an angle to the opposing force. It is the poorest for retention or support