Table 2. Scoring system for periodontal disease based on dental photographs.

Value	Definition
0	No plaque or calculus. Gums are normal
1	Mild amount of plaque. Gums can be mildly red.
2	Moderate amount of plaque. There is likely redness and swelling of the gums.
3	Tartar is present. Gums are inflamed, receding or hyperplastic.
4	Heavy tartar is present. Gums are severely inflamed. There may be evidence of infection or tooth loss.