Systemic propolis stimulates new bone formation at the expanded suture: a histomorphometric study.

Objective: To investigate the effects of systemically given propolis on the expanded premaxillary suture in a rat study model.

Materials And Methods: The 24 rats were randomly divided into three groups-only expansion (OE), expansion plus propolis (PRO), and nonexpansion (control) groups. After the 5-day expansion period was completed, the OE and PRO groups underwent 12 days of mechanical retention.