Bond Strength of Orthodontic Brackets to Temporary Crowns: In Vitro Effects of Surface Treatment

Table 3

Scores for the adhesive remnant index of all groups (n = 15) according to optical microscope (16x) analysis.

Groups	Score 0	Score 1	Score 2	Score 3
Control	8	2	4	1
Blue	7	3	4	1
Green	0	2	5	8
Black	0	4	2	9
Sandblasting	0	1	5	9

Score 0, no adhesive left on the crown surface. Score 1, less than half of the adhesive left. Score 2, more than half of the adhesive left. Score 3, all adhesive left on the crown surface, with a distinct impression of the bracket mesh.