Retrospective long-term analysis of tooth loss over 20 years in a specialist practice setting: Periodontally healthy/gingivitis and compromised patients.

PC and PHG patients exhibited similarly small TL rates over 240 ± 60 months, which should, however, be interpreted with caution in view of the group heterogeneity. Clinical trial number: DRKS00018840 (URL: https://drks.de).