Recession Depth
The linear distance measured from the cementoenamel junction to the gingival margin, quantifying the extent of apical gingival tissue displacement.
Full Definition
Recession depth is a key clinical measurement recorded during periodontal charting to quantify gingival recession at individual tooth surfaces. It is measured in millimetres from the cementoenamel junction (CEJ) to the most apical point of the gingival margin. Recession depth is distinct from probing depth and clinical attachment level, and editors must ensure these three measurements are not conflated in clinical documentation. It is used in the Miller Classification and the more recent Cairo Classification of gingival recession to guide prognosis and treatment planning for root coverage procedures. The term is always expressed numerically with a unit (mm) in clinical records.
Usage
Usage note: Always report with millimetre units. Do not conflate with probing depth or clinical attachment level; all three are distinct charting measurements.
In Context
- "A recession depth of 3 mm was recorded at the buccal aspect of tooth 23, with 2 mm of keratinised tissue remaining." — Periodontal charting record
- "The document incorrectly substituted 'probing depth' for 'recession depth'; both measurements must be recorded separately and accurately." — Clinical record audit note