Table 1.

Numerical values assigned to each periodontal parameter analyzed

Parameter	Clinical evidence	Value attributed
O' Leary Index or Plaque Control Record (PCR)	0	0
	< 10%	1
	> 10%	2
Gingival bleeding index (GBI)	0	0
	< 20%	1
	> 20%	2
Probing depth	physiological if ≤ 3mm	equal to the number of mm
	pathological if > 3mm	equal to the number of mm
Dental mobility	0	0
	1°	1
	2°	3
	3°	6
Furcations	0	0
	1°	1
	2°	2
	3°	3
Recessions	0	0
	≤ 20%	1
	> 20%	2