Primary study · included by 1 review

Progression and treatment of chronic adult periodontitis.

Preshaw 1999 · Preshaw P M, Lauffart B, Zak E, et al. · Journal of periodontology · 1999

Included by

Impact of Traditional and Alternative Nicotine-Containing Product Use on Non-Surgical Periodontal Therapy: A Systematic Review and Network Meta-Analysis.
Non-Cochrane · intervention · 2026 · cited as Preshaw 1999 · Supplementary Table S1; Reference 76; qualitative synthesis only

The review does not say which of its outcomes this study informs.

1 including review in total.