Treatment of a Class II Patient with Four Premolar Extractions and Driftodontics in the Lower Jaw.

The clinical examination of an 11.10-year-old girl in permanent dentition showed severe crowding, chewing problems and her right maxillary lateral incisor was in palatal position. The molars were in Class II relationship on both sides.

Orthodontic bonding to acid- or laser-etched prebleached enamel.

Objective: Bonding forces of brackets to enamel surfaces may be affected by the procedures used for bleaching and enamel etching. The aim of this study was to investigate the bonding strength of orthodontic brackets to laser-etched surfaces of bleached teeth.

Methods: In a nonbleached control group, acid etching (group A) or Er:YAG laser application (group B) was performed prior to bracket bonding (n = 13 in each group).