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Renvert S, Lindahl C, Persson GR. J Clin Periodontol 2017; 10.1111/jcpe.12822. [Epub ahead of print]

This longitudinal case series included participants treated with Bŗånemark titanium dental implants. Initial treatment was performed in a specialty clinic and the general dentist provided the supportive care. Eighty-six of the original 294 individuals were re-examined, with a mean follow-up of 23.3 years. The diagnosis of peri-implant mucositis and peri-implantitis was 23.8% and 13.7% respectively. A previous history of periodontitis, the presence/absence of keratinised tissue, gender or smoking status could not predict future peri-implantitis after 20-26 years. Individuals with three or more implants were at a significantly greater risk of peri-implantitis, which leads the authors to suggest these cases should receive special clinical attention. The absence of peri-implant mucositis was a good predictor of future peri-implant health, which reinforced the importance of optimal oral hygiene and regular peri-implant supportive care.