[Effect of Rhizoma Drynariae and Salvia on alveolar bone density of rats with orthodontic tooth movement].

Purpose: To detect and compare the effects of traditional Chinese drugs, Rhizoma Drynariae and Salvia, on the density of alveolar bones of rats through animal models for molar movement.

Methods: 72 female, 8-week-old SPF Wistar rats were selected to establish the animal models for orthodontic tooth movement. The rats were randomly divided into 3 groups: Rhizoma Drynariae group, Salvia group and normal saline(NS) group.