[Marginal periodontium and osseointegrated implants--literature review and own investigations. 1. Literature review].

A review from literature is given to problems of osseointegration of implants, to the biologic host defensive mechanism against plaque accumulation in the marginal region of osseointegrated implants as well as to problems of functional occlusal stress of such implants. Results of an investigation at IMZ-implants are integrated in the discussion: size of plaque accumulation, quality of subgingival plaque (dark field microscopy), bleeding on probing, pocket depth, correlation between these clinical signs.