Table 2. The Criteria of Ishii et al¹⁰ .

Evaluation	Score
	1	2	3	4
Bleeding	None	Slight	Moderate	Severe
Pain	None	Slight	Moderate	Severe
Difficulty of procedure	Very easy	Easy	Difficult	Impossible
Wound healing	Complete epithelialization	Incomplete epithelialization	Ulcer	Tissue defect or necrosis