Background: Anterior open bite (AOB) is the vertical separation between upper and lower teeth when all other teeth are in maximum intercuspation. It is considered abnormal when it affects patient's function, speech, mastication, future dental health risks and aesthetics. Aim:The current study was conducted to determine the prevalence of anterior open bite and its etiological factors in a group of Egyptian children aged 8 years and above. Methods:The sample comprised 115 participants aged between 8 and 10 years, attending the