An open, randomised, multi-centre study, comparing straight and tapered apex implants design, in partially and totally edentulous maxillae.

Unlabelled: The design of the commercially available implant OsseoSpeed (control) was changed to a tapered apex with a smaller apical diameter; OsseoSpeed TX (test).

Objective: The present study evaluated the clinical outcome of marginal bone level as primary outcome, and cumulative implant survival rate, primary stability and condition of the peri-implant mucosa as secondary outcomes, one year after loading.

Material And Methods: 92 subjects (150 implants, ten centres), with partially or totally edentate maxillae were randomized to receive either test or control implants.

The prevalence and alterations of furcation involvements 13 to 16 years after periodontal treatment.

The aim of this study was to evaluate the long term outcome of furcation involved molars in a population treated for periodontal disease. Initially, the study sample was 147 referred periodontal patients. Periodontal treatment consisted of oral hygiene instructions, supra- and subgingival scaling and periodontal surgery.