Читать книгу The ADA Practical Guide to Dental Implants - J. Anthony von Fraunhofer - Страница 20

A major problem with CDs, especially for the mandible, is poor retention, often exacerbated by residual alveolar bone above basal cortical bone. Resilient linings, denture creams and other retention aids may alleviate the problem on a temporary basis but rarely “cure” retention or stability issues. One approach to addressing such concerns during the 1970s and, subsequently, was the subperiosteal implant which comprised a metallic framework that closely fit and sat directly on the bone of the mandible.