Microleakage under ceramic flash-free orthodontic brackets after thermal cycling

: To compare microleakage under 3M Unitek’s APC Flash-Free Adhesive Coated System bracket and the APC PLUS Adhesive Coated System bracket after thermal cycling. Materials and Methods: Forty freshly extracted human maxillary premolars were randomly divided into two groups and bonded with either a Flash-Free bracket or a PLUS bracket

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