Risultati clinici di impianti dentali inseriti in pazienti con e senza una storia di parodontite. Uno studio prospettico di 20 anni


Andrea Roccuzzo


Aim: To present the 20-year clinical outcomes of tissue-level implants in partially edentulous patients previously treated for periodontitis and in periodontally healthy patients (PHP).

Material and Methods: The original population consisted of 149 partially edentulous patients consecutively enrolled in a private specialist practice and divided in 3 groups: PHP, moderately Periodontally Compromised Patients (mPCP) and severely PCP (sPCP). After successful completion of periodontal/implant therapy, patients were enrolled in an individualized Supportive Periodontal Care (SPC) program. 

Results: Eighty-four patients reached the 20-year examination. During the observation time, 12 implants were removed due to biological complications, leading to an implant survival rate of 94.9% for PHP, 91.8% for mPCP, and 93.1% for mPCP. The final analysis included 169 implants. After 20 years, the odds ratio (OR) for implant loss in smokers non-compliant with SPC was 2.30 (95%CI 1.03-17.32, p=0.04) for the PHP group and 12.03 (95%CI 3.03-42.13, p=0.02) for the PCP group. 

Conclusions: Tissue-level implants, placed following comprehensive periodontal therapy and SPC yield favourable long-term results. However, patients with a history of periodontitis and tobacco consumption non-compliant with SPC, are at higher risk of biological complications and implant loss.