From: Periodontitis as a risk for oral cancer: a case–control study
Periodontitis | Stage I | Stage II | Stage III | Stage IV | |
---|---|---|---|---|---|
Severity | Interdental CAL (at the site of greatest loss) | 1–2 mm | 3–4 mm | ≥ 5 mm | ≥ 5 mm |
Tooth loss (due to periodontitis) | No tooth loss | ≤ 4 teeth | ≥ 5 teeth |