Clinical evidence and Science 27 Meta-analyses of studies evaluating the survival of dental implants in general reported survival rates of 97.2% after 5-year follow-up and 95.2% (Jung et al. 2012 (3)) or 96.4% (Howe et al. 2019 (4)) after 10-year follow-up. The performance of CAMLOG® implants in the mid- and long-term are absolutely in line with or even exceeding these survival rates. Table 3 summarizes retrospective, cohort, and randomized clinical studies evaluating CAMLOG® implants with a followup time of more or equal to 5 years (Tab. 3). Performance in daily dental practice: observational studies In observational studies the use and the performance of dental implants can be examined in daily dental practice and over the entire range of indications. This real-life data is of great importance for the assessment of dental implants by dental professionals. The following three studies include survival and success data from CAMLOG® implants used in broad indications and in both the maxillary and the mandible. In an evaluation of patient/implant data from three dental practices Knöfler et al. reported clinical data of more than 10 000 implants from different manufacturers (mainly Camlog, Friadent, Astra-Tech) and over a period of 20 years (1991 to 2011) (6–8). The study team published three articles focusing on different influencing factors on the implant survival. Camlog implants were only introduced and used starting from 1999/2000. However, 6 063 implants evaluated were CAMLOG® and CONELOG® SCREWLINE implants (60% of all implants analyzed). Demography, implant dimensions and type, indication, type of restoration, treatment plan, and complications were collected. Cumulative survival rates of all involved implants were 96%, 93%, and 86% after 5-, 10-, and 20-years, respectively, and the overall loss rate 4.54%. Camlog implants, however, had a far lower loss rate of 1.56%. General finding was that newly introduced implant systems required the practitioners to undergo a learning curve with the new system and that half of the lost implants were early failures, and the second half was usually lost due to periimplantitis (Knöfler et al. 2019 (7)). The Camlog implants did not show significant differences in survival rates regarding diameters and lengths. Additionally, Camlog implants with its Promote® Surface showed the highest probability of survival compared to other implant systems (Knöfler et al. 2017 (6)). In the third article the investigators looked at the influence of the type of restorations on implant survival: cemented vs. screw-retained; fixed versus removable prosthesis; single crowns, fixed partial dentures, full arch dentures. Single crowns had the lowest loss rate but the paper summarized all possible restorations performed well with low complication rates. (Knöfler et al. 2018 (8)). In a multicenter observational clinical study with a follow-up of 5-years post-loading the survival and success rates of CAMLOG® SCREW-LINE implants, either restored with Platform-Switching abutments or platform matching abutments were observed (Beschnidt et al. 2018 (9)). The implant treatment had to follow the intended use but was open regarding type of surgery and restoration workflow. Patients were recruited in 17 private practices distributed over five European countries. 185 patients with 271 implants could be enrolled whereof 137 patients with 200 implants attended the final 5-year follow-up visit. Three implants were lost post-loading leading to a survival rate of 98.6%. One more persisting complication (periimplantitis) is reflected in the success rate of 98% (criteria by Buser et al. 2002 (1)). The authors attributed excellent clinical outcomes to the implants comparable with those achieved in controlled clinical trials. Vanlioglu et al. (2014) (10) summarized on a congress poster presentation 10-year post-loading follow-up data of 67 patients with 253 implants placed in the posterior maxilla and mandible. Restorations included single crowns and fixed partial dentures. The cumulative survival was 100%. Only a few technical complications within the fixed partial dentures occurred (success rate 96.9%). Mean marginal bone level change was reported with 0.35 ± 0.11mm at 10-year post-loading. Excellent long-term success and survival with CAMLOG® implants Long-term success CLINICAL EVIDENCE FOR CAMLOG® AND CONELOG® IMPLANTS
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