Table 1.

Plaque (TQHI) index and gingival index (Loe and Silness)

Turesky modification of the Quigley–Hein index		Gingival index (Loe and Silness)
Scores	Criteria	Criteria
0	No plaque	Normal gingiva
1	Isolated areas of plaque at gingival margin	Mild inflammation: slight change in color and slight edema. No bleeding on probing
2	Thin band of plaque at gingival margin (≤1 mm)	Moderate inflammation: Glazing, redness, and slight edema, bleeding on probing
3	Plaque covering up to 1/3 of the tooth surface	Severe inflammation: marked redness and edema, ulceration, tendency to spontaneous bleeding
4	Plaque covering between 1/3 and 2/3 of the tooth surface
5	Plaque covering ≥2/3 of the tooth surface