evidencegaps
Primary study · included by 1 review

Effect of smoking on folic acid and vitamin B12 after nonsurgical periodontal intervention.

Erdemir 2007 · Erdemir Ebru Olgun, Bergstrom Jan · Journal of clinical periodontology · 2007

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 Erdemir 2007 · Supplementary Table S1; Reference 48; qualitative synthesis only

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

1 including review in total.