Sulcus Depth
The measured distance from the gingival margin to the base of the peri-implant sulcus, used to assess soft-tissue health around an implant.
Full Definition
Sulcus depth (also called probing depth when measured with a periodontal probe) is a key clinical parameter documented in peri-implant monitoring records. Around natural teeth it is termed the gingival sulcus; around implants it is the peri-implant sulcus, and editors should ensure the appropriate modifier is applied. A sulcus depth exceeding 5–6 mm is often clinically significant and triggers further diagnostic workup for peri-implantitis. Editors of longitudinal outcome studies must verify that sulcus depth values are consistently reported across all time points and that the measurement protocol (probe force, sites per implant) is clearly described. The term should not be confused with 'pocket depth,' which implies pathological change, although the two are sometimes used interchangeably in clinical literature.
Usage
Usage note: Prefer 'peri-implant probing depth' in formal publications; reserve 'sulcus depth' for clinical chart entries.
In Context
- "Mean peri-implant sulcus depth at the 12-month follow-up was 3.2 ± 0.4 mm, within acceptable clinical limits." — Clinical outcome report
- "The author used 'pocket depth' and 'sulcus depth' interchangeably; the editor standardised to 'probing depth' throughout." — Copy-editing log