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Influence of the implant cervical topography on the crestal bone resorption and immediate implant survival.

Heinemann F, Bourauel C, Hasan I, Gedrange T

Journal of Physiology and Pharmacology 2009 December, 60 (Suppl 8): 99-105

The aim of the study was the investigation of the survival rate of immediate implants in addition to the evaluation of the level of the alveolar bone around the neck region of immediately placed implants of different macrodesigns. To address the question whether the „biological“, highly polished area of the implant neck is more associated with crestal resorption than the rough neck region, the influence of the surface characters of the implant cervical region was studied. The survival rate of 129 implants from 52 patients was evaluated on different time points after immediate implantation. The level of peri-implant bone contacts to the implant border from 24 implants, which included implants types Tiolox®, NobelReplace Tapered and PrimaConnex Tapered, was measured radiographically in seven patients who received immediate implants followed by a healing period of 3-6 months. Various periods from the time of insertion were considered for the measurement depending on the clinically available data. No differences in the status of the alveolar crest around highly polished and roughened cervical-implant regions were observed in the seven patients. The most noticeable resorption was detected in the distal margin of the alveolar crest. The present study shows that highly polished- or roughened neck implants are inserted into a fresh extraction socket do not differ significantly in the clinical and radiographical outcomes after various post-operative periods.



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