The role of ephrinB2-EphB4 signalling in bone remodelling during orthodontic tooth movement.

Objective: The aim of this study was to investigate the role of ephrinB2-EphB4 signalling in alveolar bone remodelling on the tension side during orthodontic tooth movement (OTM).

Materials And Methods: An OTM model was established on sixty 8-week-old male Wistar rats. They were randomly divided into the experimental group and the control group.

Risk factors for maxillary impacted canine-linked severe lateral incisor root resorption: A cone-beam computed tomography study.

Introduction: Impacted maxillary canine-linked severe lateral incisor root resorption (SIRRc) is rare, but it greatly influences the survival of the affected teeth. Our study was designed to investigate the risk factors for SIRRc.

Methods: Eighty-two patients with SIRRc and 81 patients with impacted maxillary canines but without SIRRc were included and evaluated by cone-beam computed tomography in software programs by 1 examiner (H.

Effects of estrogen on root repair after orthodontically induced root resorption in ovariectomized rats.

Introduction: This study aimed to investigate the effects of estrogen on root repair after orthodontically induced root resorption.

Methods: Seventy-two 6-week-old female Wistar rats were randomly divided into 3 groups: ovariectomy only (OVX), ovariectomy plus estradiol injection (OVX + E2), and sham operation (control). E2 was administrated to all the experimental animals after the establishment of the root repair model.

Palatal expansion and relapse in rats: A histologic and immunohistochemical study.

Introduction: Rapid palatal expansion is an effective intervention for correcting transverse maxillary deficiency in growing patients. However, relapse after treatment is often observed, and the mechanisms of tissue remodeling during expansion and relapse remain unclear. This study aimed to gain insight into such a mechanism.