GINGIVITIS INDEX: Gingivitis score (GI)= Units on a scale 0 to 3 (0 = no inflammation, 1 = Mild inflammation slight change in color and little change in texture 2 = Moderate inflammation moderate glazing, redness, edema and hypertrophy. Tendency to bleed upon probing. 3 = Severe inflammation-marked redness and hypertrophy. Tendency to spontaneous bleeding. GI scored=sum of GI scores divided by the number of sites (gingival gum line around the tooth) scored.