Kinane DF, Radvar M. The effect of smoking on mechanical and antimicrobial periodontal therapy. J Periodontol. 1997;69:467–72.

Swierkot K, Lottholz P, Flores-de-Jacoby L, Mengel R. Mucositis, peri-implantitis, implant success, and survival of implants in patients with treated generalized aggressive periodontitis: 3- to 16-year results of a prospective long-term cohort study. J Periodontol. 2012;83:1213–25.

Degidi M, Nardi D, Piattelli A. 10-year follow-up of immediately loaded implants with TiUnite® porous anodized surface. Clin Implant Dent Related Res. 2012;14:828–38.

Mozzati M, Gallesio G, Del Fabbro M. Long-term (9-12 years) outcomes of titanium implants with an oxidized surface: a retrospective investigation on 209 implants. J Oral Implantol. 2015:437–43.

Busenlechner D, Fürhauser R, Haas R, Watzek G, Mailath G, Pommer B. Long-term implant success at the academy for oral implantology: 8-year follow-up and risk factor analysis. J Periodontal Implant Sci. 2014;44:102–8.

Mengel R, Behle M, Flores-de-Jacoby L. Osseointegrated implants in subjects treated for generalized aggressive periodontitis: 10-year results of a prospective, long-term cohort study. J Periodontol. 2007;78:2229–37.

Mengel R, Flores-de-Jacoby L. Implants in patients treated for generalized aggressive and chronic periodontitis: a 3-year prospective longitudinal study. J Periodontol. 2005;76:534–43.

Mengel R, Schroder T, Flores-de-Jacoby L. Osseointegrated implants in patients treated for generalized chronic periodontitis and generalized aggressive periodontitis: 3- and 5-year results of a prospective long-term study. J Periodontol. 2001;72:977–89.

Mengel R, Stelzel M, Hasse C, Flores-de-Jacoby L. Osseointegrated implants in patients treated for generalized severe adult periodontitis. An interim report. J Periodontol. 1996;67:782–7.

Karoussis IK, Salvi G, Heitz-Mayfield L, Brägger U, Hämmerle C, Lang N. Long-term implant prognosis in patients with and without a history of chronic periodontitis: a 10-year prospective cohort study of the ITI dental implant system. Clin Oral Implants Res. 2003;14:329–39.

De Boever AL, Quirynen M, Coucke W, Theuniers G, De Boever JA. Clinical and radiographic study of implant treatment outcome in periodontally susceptible and non-susceptible patients: a prospective long-term study. Clin Oral Implants Res 2009;20:1341-1350.