<h4>Aim and objective</h4>The aim of this article is to report the treatment management of fracture mandible in pediatric patients by a simple, noninvasive, and conservative method. Treatment of a pediatric patient with a mandibular fracture is one of the most challenging jobs. In adults, the treatment of the mandibular fracture is a surgical intervention by open reduction and fixation but it is not usual in the case of children due to the anatomy of growing mandible and deciduous teeth, presence of underlying erupting permanent teeth, and incomplete ossification of jawbones. In pediatric patients, the main concern in the treatment of the mandibular fracture is the normal growth and development of mandibular bone. So, in this case series, the treatment of the children who got mandibular fracture were done by a simple, time saving and noninvasive procedure by the fabrication of open occlusal splint retained by circummandibular wiring which did not interfere with the growth and development of mandible.<h4>How to cite this article</h4>Lodhi T, Patil SB, Bahetwar SK, <i>et al.</i> Management of Fracture Mandible by Open Occlusal Acrylic Splint in Pediatric Patients: A Case Series. Int J Clin Pediatr Dent 2021;14(6):812-815. A bstract Aim and objective The aim of this article is to report the treatment management of fracture mandible in pediatric patients by a simple, noninvasive, and conservative method. Treatment of a pediatric patient with a mandibular fracture is one of the most challenging jobs. In adults, the treatment of the mandibular fracture is a surgical intervention by open reduction and fixation but it is not usual in the case of children due to the anatomy of growing mandible and deciduous teeth, presence of underlying erupting permanent teeth, and incomplete ossification of jawbones. But trauma while involved in the act of play is the most common amongst children. Though the reported incidence rate of facial fracture in children is 5% 1 due to the protective nature of anatomic features of the child's face. As in a child below 5 years, the midface and mandible are in retruded position, the condyle is short, the skull is prominent and the mandible is more flexible which reduces the incidence of mandibular fracture. 2 but as the age increases above 5 years the facial growth takes place in forward and downward direction which increases the rate of midfacial and mandibular fracture. But in children, the treatment varies due to the anatomy of the growing mandible, anatomy of deciduous teeth, absence of some deciduous teeth due to exfoliation 9 , and presence of permanent tooth buds which does not permit the reduction of fracture mandible by plates, arch bar, and interdental ligature. 6 , 10 , 11 So, the best conservative and non-invasive treatment in children for the fractured mandible is immobilization and closed reduction. In literature, the various suggested methods for closed reduction in pediatric patients are by using prefabricated open/closed cap splints, modified orthodontic brackets, orthodontic resin, and rubber elastics, and modified orthodontic splint appliance. 4 So in this paper, we have highlighted the importance of management of mandibular fracture in a pediatric patient by open occlusal acrylic splint with the concern not to disturb the normal growth and development of the jaw and permanent tooth buds. All the instructions were given to the patient's parents. After 3 weeks the splint was removed. Fig 10 Parasymphyseal fracture of the left side of the mandible Fig 11 Open occlusal splint retained with circummandibular wiring D iscussion Treatment of mandibular fracture in children differs from the adult due to the anatomy of the primary dentition which does not allow the open reduction and immobilization by intermaxillary fixation and due to anatomical complexity of growing mandible and the presence of growing permanent tooth germs which gets interfered and affected by the open reduction.