Study design

This was a prospective multicenter non- interventional study to assess implant success and survival rates in daily dental practices using the CAMLOG SCREW-LINE implants (CAMLOG Biotechnologies AG, Basel, Switzerland) used with or without platform-switching abutments. Patients were enrolled over a period of 2 years from October 2008 to September 2010 from 17 sites across five countries (Austria n = 2, Germany n = 10, Spain n = 2, the Netherlands n = 2, and Turkey n = 1). All patients gave their signed informed consent for participation in this study. The study was performed in accordance with the declaration of Helsinki, and institutional review board approval was obtained from the respective local review boards of the participating countries. The reporting of this study conforms to the STROBE statement [24].

The primary outcome of this study was the implant survival and success rates at 1, 3, and 5 years post-loading. The secondary outcomes were patient satisfaction as indicated by the assessment of the patient’s ability to chew, ability to taste, comfort, appearance and fit of restoration, and general satisfaction.

Population

Male and female patients ≥ 18 years of age with sufficient bone at the implant site to achieve primary stability were included in this study. It was expected that the patients would return to the treatment center for prosthetic restoration and routine follow-up appointments at 1, 3, and 5 years post-loading. If socket preservation were to be performed, a minimum of 6 months must have elapsed before surgery. In such cases, this would be documented on the case report form. Patients were excluded if they had any contraindications to the package insert for the dental implant system, if primary stability at the implant insertion was not achieved, or if any bone graft and/or guided bone regeneration procedure was required.