Abstract
This study evaluated marginal bone loss surrounding single-tooth implants as well as the adjacent tooth bone levels. A total of 71 Brånemark implants were followed in 58 patients with a mean age of 32 years. No implant loss was noted during the observation period of up to 3 years. Reference points were the cementoenamel junction of the adjacent teeth and the fixture-abutment junction. Measurements were carried out using magnification. Results showed that the bone loss between the preoperative examination and crown delivery exceeded the bone loss over the subsequent observation period. Factors including age, cause of tooth loss, vertical positioning of the implant in relation to the teeth, jaw region, and distance between the implant and the adjacent teeth were all considered within the study. Bone loss was found to be greatest adjacent to maxillary lateral incisors. Furthermore, bone loss was greatest when the distance between the implant and the adjacent root surface was small.
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