The Effect of Different Bracket Base Cleaning Method on Shear Bond Strength of Rebonded Brackets

Abstract

In-offce methods; slow speed CB and US are effective, quick and cheap methods for bracket base cleaning for rebonding.

Residual Adhesive Removal Methods for Rebonding of Debonded Orthodontic Metal Brackets: Systematic Review and Meta-Analysis

“…Four different adhesive removal methods were identified in this review. These included air abrasion [ 13 , 14 , 15 , 17 , 42 , 43 , 44 , 45 , 46 , 47 ], laser [ 17 , 42 ], mechanical grinding [ 14 , 43 , 44 ], and direct flame [ 12 , 41 , 43 ]. The characteristics of these studies are summarized in Table 2 .…”

“…When observing the data about mechanical grinding, four studies reported this method. For this purpose, a green stone [ 43 , 48 ], or a carbide bur [ 14 , 41 ] at slow speed were used to grind the bracket surface. The meta-analysis revealed that, when this method was used for the removing of adhesive residual, significantly lower values in the bond strength of rebonded brackets were achieved.…”

“…By grinding the bracket base using a green stone or a carbide bur, there is a high risk of damage or grinding off the mesh base itself, resulting in a decrease in bond strength. [ 12 ] Also, grinding the bracket mesh has been proved to leave a considerable amount of the adhesive, obliterating the mesh and decreasing the contact area, thus eliminating virtually any mechanical retention [ 10 , 12 , 14 , 44 ].…”

“…Adhesive remnants of the dislodged brackets had been conventionally removed in-office by using green stones [ 12 ], direct flame [ 13 ], tungsten-carbide bur [ 14 ], sandblasting [ 15 ], silica coating [ 16 ], or laser application [ 17 ]. Even though these methods can be easily performed out in the dental office with minimal cost, there is no consensus as to which is the best method to remove adhesive remnants from the bracket base.…”

The shear bond strength of reconditioned sapphire bracket after rebonding with sandblasting zirconia

“…The results of previous studies stated that the rebonded ceramic bracket by the sandblasting procedure had a shear bond strength comparable to the new attachment. 12 The rebonded procedure with sandblasting plus silane yields high shear strength and the equivalent of a new bracket attachment strength. 2 The SEM image showed the surface of the rebounded sapphire bracket base after the sandblasting procedure using zirconia to have more microporosity and a uniformly inclined shape.…”