Biomimetic Effect of Nano-Hydroxyapatite in Demineralized Enamel before Orthodontic Bonding of Brackets and Attachments: Visual, Adhesion Strength, and Hardness in In Vitro Tests

Table 3

ARI score percentages of the six groups tested (conditions: untreated enamel, enamel after hypomineralization treatment, and enamel after hypomineralization and remineralization treatments).

Group	Appliance	Enamel	ARI = 0	ARI = 1	ARI = 2	ARI = 3
1	Bracket	Intact	0	10	50	40
2	Bracket	Demineralized	100	0	0	0
3	Bracket	Demineralized and remineralized	70	30	0	0
4	Attachment	Intact	10	10	60	20
5	Attachment	Demineralized	80	20	0	0
6	Attachment	Demineralized and remineralized	60	20	0	20