This is a review and update of the: (1) interaction of dental implants with the environment, and (2) effects of salivary contamination on the load of implant prostheses.

This review of occlusal considerations for implant-supported complete dentures reflects the majority opinion of authors according to clinical observations and research-documented evidence. Occlusal concepts are presented for the implant-supported complete dentures regarding analysis of loads applied to dental implants, location and number of implants, occlusal materials, and occlusal scheme.

Within the limitations of this study, changes of salivary pH were found after the insertion of conventional dentures and dentures supported by implants.

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