Hemangiomas are common benign vascular tumors which about 70% to 80% of the lesions are found in the head and neck region. This study was conducted on 36 children with hemangioma who were referred to Orofacial Surgery Cabinet of Dental School of Health Sciences University of Mongolia and Orofacial Surgery Cabinet of National Center for Maternal and Child Health of Mongolia between 2013 and 2015.Of the 36 children referred for assessment, 72% were female, 55% were infants of 4 to 9 months old, and 83% of them were citizens. 58% of patients underwent cryotherapy,and 57% of patients underwent cryotherapy had 2 therapy sessions. 25% of patients receiver sclerotic therapy, and 67% of them had 2 therapy sessions. According to the locations of hemangiomas 30% of them were localized in infraorbital area. 72% of the participants are women and 55% are children age of 4-9 month which 83% of all participants were living in city. 58% of children with hemangioma are treated with cryotherapy which 57%of treatment finished by second visit. And 25% were treated by dehydration treatment which 67% were finished by second visit.

BACKGROUND The occurrence of facial injuries tends to be high compared to injuries in other parts of the body, because the face is without a protective covering, and the chin mandible is the most prominent bone in this region of the body. According to several studies, mandibular fractures account for 59% of all facial fractures. Mandibular fractures usually occur in 2 or more locations because of the bone’s U shape. This article aims to analyze retrospectively the age, gender, etiology, and anatomic distribution of mandibular fractures. METHODS The data for this study were obtained from the medical records of 1217 cases treated at Department of Oral and Maxillacial Surgery at National First Central Hospital of Mongolia in 2016. Information was collected from the clinical notes of each patients with mandible fractures. The demographic variables such as age, gender and clinical information included diagnosis, etiology, and anatomical distribution of fractures was assessed. RESULTS The total of 229 subjects had mandible fractures, out of which 209 were males and 20 were females. The mean age of the participants was 32,2±10. The major cause of fractures was assault 79% , followed by road traffic accident – 11%, sport injuries – 5%, accidents at work or home – 3%, other – 2%. Mandible fracture incidence were high during in August. By the time referred to a physician from day of injury were 1-5 days 72,1%, 6-10 days 25,7%, delayed more than 10 days were 2,2% of the cases. Unilateral fractures were 77,4%, bilateral fractures 21,7%. Mandible left side were 158 (65,9%) mostly injured. The most common fracture site was angle- 112 (53%), condyle- 58 (27,5%), body- 21 (9,9%), parasymphysis- 16 (7,6%) and at least common site were ramus- 2 (1%) and symphysis - 2 (1%) of mandible. Among multiple fractures most common sites were condyle-parasymphysis which 24 cases and angle – parasymphysis were 21 cases. CONCLUSION The following conclusions have been drawn from the foregoing study. The mandible fractures were more common in males 209 (91,3%) than females 20 (8.7%). Assaults were the most common cause of the fracture. 77,4% fractures were unilateral fractures. The most common site of fracture was mandible angle- 112 (53%) and common multiple fractures were condyle-parasymphysis. By the time referred to a physician from day of injury were 1-5 days 72,1%, 6-10 days 25,7%, delayed more than 10 days were 2,2% of the cases.