The proportion of cancellous bone as predictive factor for early marginal bone loss around implants in the posterior part of the mandible.

Aim: This study envisaged to explain early marginal bone loss (first years of function) around implants in the posterior area of the mandible by the local bone quality (ratio cortical vs. cancellous bone).

Material And Methods: Four hundred and twenty-three Brånemark MKIII implants inserted in the posterior region of the mandible were examined, retrospectively, on intra-oral radiographs taken at abutment connection, and 1 and 3-4 years after loading.