Table 1.

Endoscopic Biofilm Index and Endoscopic Calculus Index: Characteristics and Definitions [11]

Endoscopic Biofilm Index
Degree	Definition
0	No observable biofilm on root surface
1	Separate flecks of biofilm on less than 1/3 of the surface
2	A thin continuous band of biofilm on 2/3 of the surface
3	A continuous band of biofilm on the entire surface
Endoscopic Calculus Index
0	No observable calculus on root surface
1	Separate flecks of calculus
2	A coalition of calculus deposits covering < 50% of the visual field
3	A thick,, diffuse accumulation of calculus covering >50% of the visual field