Perio & Hygiene Observational ✓ Peer reviewed

Regional Disparities in the Prevalence of Probing Depths and Tooth Loss in Germany-Results From the German National Cohort (NAKO).

Journal of clinical periodontology · Gortschakow J, Borof K, Sasunna D, Kuhr K, Aarabi G, Baumeister SE, Ciardo A, Greiser KH, Hagenfeld D, Hertrampf K, Kim TS, Kühnisch J, Pischon T, Reckelkamm SL, Samietz S, Wojciechowsky M, Alselwi A, Kemmling Y, Krist L, Leitzmann M, Meinke-Franze C, Mikolajczyk R, Obi N, Pickford R, Pischon N, Rathmann W, Schulze MB, Schipf S, Schmidt B, Willich SN, Rach S, Jordan AR, Völzke H, Kocher T, Kanzow P, Welk A, Rupf S, Holtfreter B · 2026-09-18

Researchers examined regional differences in gum probing depths and tooth loss across Germany using data from over 184,000 adults aged 19–74. They found edentulism and probing depth varied significantly by region, with southern areas showing better outcomes than north-eastern regions.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.

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