Evaluation of Self-Etching Adhesive and Er:YAG Laser Conditioning on the Shear Bond Strength of Orthodontic Brackets

Table 3

Distribution frequency and percentages of the adhesive remnant index (ARI).

Group	ARI scores (%)				𝑛
	0	1	2	3
I	1 (3.3)	5 (16.6)	16 (53.3)	8 (26.6)	30
II	1 (3.3)	11 (36.6)	9 (30)	9 (30)	30
III	29 (96.6)	1 (3.3)	0 (0)	0 (0)	30
IV	5 (16.6)	20 (66.6)	3 (9.9)	2 (6.6)	30

χ ² = 116.377; df = 9; 𝑃=0.000.