INTRODUCTION: Dentoalveolar fractures of children are a common manifestation of trauma, but it is different from trauma in adults. There are several points of differentiation between the two; the most important one is growth. OBJECTIVES: To evaluate the efficacy of a new fiber glass splint for fixation of dentoalveolar fractures in children. MATERIALS AND METHODS: This was a prospective clinical trial. Ten children with dentoalveolar fractures were selected from the outpatient clinic of The Oral and Maxillofacial Surgery, Faculty of dentistry, Alexandria University. The patients were treated with closed reduction and fixation with new splint (F-Splint Aid). Clinical and radiographic evaluation were done up to 4 months post operatively for postoperative swelling, Inflammation or infection and stability of fracture segment. The bone density was measured and compared at the first and fourth months' post operatively using cone beam software. RESULTS: There was a decrease of pain from time of treatment to the seventh day after treatment which was statistically significant, the subsidence of edema and decrease of mobility were also statistically significant, and there was an increase in the mean radiographic bone density from 1month to 4months post operatively which were found to be statistically significant (T value=5.639, P value<0.001). CONCLUSIONS: It was concluded that the use of F. Splint. Aid in the treatment of dentoalveolar fracture of children is cheap, hygienic, esthetic, and non-invasive technique.