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Background: Leeway space becomes important during the change of dentition and occlusal development. Objectives: The study was designed to measure the mean leeway space of maxilla and mandible of Nepalese children using Orthopantomogram radiographs and also to compare the difference between mean leeway space in male and female children. Methodology: After ethical approval, 270 OPG (Orthopantomogram) radiographs of age groups 6-12 years Nepalese children exhibiting mixed dentition were selected for the study after following the inclusion and exclusion criteria by convenience sampling method. A digital measurement in the OPG software was used to measure the mesiodistal width of deciduous canine and molars along with permanent canine and premolars in all quadrants. Results: The mean leeway space on maxilla was seen to be (0.86 ±1.97mm) while for mandible was (2.45± 1.85 mm).The leeway space in both maxilla and mandible was seen to be more in females (0.87 ± 1.87 mm) and (2.52 ± 1.85 mm) than in males (0.85 ± 2 mm) and (2.40 ± 1.90mm)respectively. Conclusion: The mean leeway space in Nepalese children was found to be less than the standard “Leeway space of Nance” which could be due to population tooth crown differences and various environmental factors. Further studies could be recommended in the future both radiographically and clinically for obtaining a standardized leeway space for Nepalese population.

Background: Injury to a young child’s teeth and face is a traumatic experience for the child and parents. Prompt and effective action on traumatized teeth significantly increases the likelihood of a positive treatment outcome. Adequate knowledge of school teachers in emergency situation arising during school hours can prove to be a boon for the child’soral health.Objectives: To assess the knowledge of school teachers of Bhaktapur about emergency management of dental trauma and also to measure the relationship between socio demographic characteristic of teachers and knowledge about dental emergencies.Methods: The cross sectional study was conducted among 424 schools teachers of Bhaktapur district from September 2014 to March 2015. Simple random sampling was done to select the schools. Questionnaire was distributed among the teachers after taking their informed written consent. Data was collected and sent for statistical evaluation. Frequenciesand percentage were calculated. Chi-square and Fisher’s Exact test were applied.Results: Nearly one third (32.2%) teachers who had information on dental trauma knew the proper management of displaced teeth (p=0.01). Statistically significant difference was found among those who had fi rst aid training and proper management of displaced teeth (p=0.04). Teachers who had experienced dental trauma in their students were only confident of managing displacement of traumatized teeth (p=0.02).Conclusion: Knowledge of the school teachers in Bhaktapur was seen to be inadequate for emergency management of fracture and avulsed tooth.