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The aim of this study was to investigate the effects of alendronate (Aln) irrigation with low-level laser therapy (LLLT) on the healing of bone defects in rats. Sixty Wistar rats weighing 250 to 300 g were randomly divided into three groups of 20 animals each: (1) control group, (2) Aln group, and (3) Aln with LLLT group. The distal epiphysis of all rats was perforated with a surgical bone drill. Twenty rats served as control. The bone defects of 40 rats received local alendronate sodium trihydrate irrigation (1 mg/ml) at the time of surgery
