Outcome Measures Commonly Used in Self-Care Product Studies

Plaque Index (PI)70 (Quigley & Hein)
Assesses plaque with disclosing solution

Plaque Index (PI)71 (Turesky Modification of the Quigley-Hein PI)
Assesses plaque with disclosing solution

Plaque Index (PI)72 (Silness & Löe)
Assesses thickness of plaque at gingival margin; no disclosing solution used

Gingival Index (GI)73 (Löe & Silness)
Severity of gingivitis based on color, consistency, and bleeding on probing

Eastman Interdental Bleeding Index (EIBI)74 (Abrams, Caton, Polson, Caton, Polson)
Inflammation and bleeding in the interdental area upon tooth-pick insertion

Papilla Bleeding Index75
Bleeding on probing; interdental papilla only

Bleeding on probing (BOP)76
Bleeding after probe is gently inserted to the base of the pocket

Probing depth (PD)77
Measures the depth of the pocket, may or may not reflect bone loss

Clinical attachment Level (CAL)76
Measures level of bone from an anatomical landmark, usually the CEJ