Faculty of Oral and Maxillofacial Surgery, Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Dent Traumatol. 2010 Apr;26(2):154-7. doi: 10.1111/j.1600-9657.2009.00861.x. Epub 2010 Jan 19.
Trauma to maxillary anterior teeth is a common reason for emergency room visits among children; therefore, the goal of this study was to evaluate the prevalence and related factors of such trauma among 9- to 14-year-old children in Yazd.
A sample of 1440 schoolchildren aged 9-14 years old, consisting of 720 boys and 720 girls, were randomly selected from 24 schools in Yazd. Ellis classification was used to record the dental injuries.
The prevalence found was 27.56%. The occurrence of trauma was significantly higher in male patients; furthermore, most of the dental trauma occurred in children between 9 and 10 years of age (47.38%). The most common type of injury was the 'enamel only' fracture; falls being the main cause of trauma. The most affected tooth was the maxillary central incisor.
The prevalence and most common causal factor of traumatic injuries to the maxillary anterior teeth in schoolchildren living in Yazd was approximately the same as that found in other countries.
上颌前牙外伤是儿童急诊就诊的常见原因；因此，本研究旨在评估亚兹德 9 至 14 岁儿童上颌前牙外伤的患病率及相关因素。
从亚兹德的 24 所学校中随机抽取 1440 名 9-14 岁的学生（720 名男生和 720 名女生）作为样本。使用 Ellis 分类法记录牙齿损伤。
发现的患病率为 27.56%。男性患者外伤发生率明显更高；此外，大多数牙齿外伤发生在 9 至 10 岁的儿童中（47.38%）。最常见的损伤类型是“仅釉质”骨折；跌倒是外伤的主要原因。受伤最严重的牙齿是上颌中切牙。
亚兹德地区在校儿童上颌前牙外伤的患病率和最常见的致病因素与其他国家大致相同。
