Effect of Rebonding on the Bond Strength of Orthodontic Tubes: A Comparison of Light Cure Adhesive and Resin-Modified Glass Ionomer Cement In Vitro

Table 1

The bonding instructions for light cure composite and glass ionomer materials.

Bonding material	Application steps
Transbond XT (group 1)	(1) Cleaning of enamel surface for 30 s with nonfluoridated paste and rubber cups (Kerr Superpolish); (2) Enamel conditioning with 37% phosphoric acid for 30 s. Washed with water (30 s) and dried to a chalky white appearance; (3) Primer application for 15 s; (4) Adhesive application to tube base; (5) Immediate tube positioning on enamel. Excess adhesives were removed with a sharp scaler; (6) Light curing 10 s at each of the mesial, distal, occlusal, and gingival faces
Fuji Ortho LC (group 2)	(1) Cleaning of enamel surface for 30 s with nonfluoridated paste and rubber cups (Kerr Superpolish); (2) Enamel conditioning with GC Fuji Ortho conditioner for 10 s, washing with water, drying carefully with compressed air (1-2 s); (3) Mixing of fluid and powder according to the manufacturer’s instructions; (4) Immediate positioning of the coated tube base on the enamel, removal of excess adhesives with a sharp scaler; (5) Light curing for 10 s at each of the mesial, distal, occlusal, and gingival faces