Academic Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry - University of Sheffield, UK.
Paediatric Dentistry Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
Eur J Paediatr Dent. 2020 Dec;21(4):292-298. doi: 10.23804/ejpd.2020.21.04.7.
To evaluate the frequency and distribution of dental anomalies (DA) in a paediatric population.
Panoramic digital radiographs of children between 6 and 12 years old performed at a reference centre for radiographic exams were accessed. Two calibrated examiners evaluated the radiographs. The association between variables and outcomes was assessed using non-parametric tests. The significance level was set at 5%.
Five hundred and twelve individuals were included and 61.3% presented at least one DA. The mean age of patients with DA (9.35±1.60) was significantly higher compared to patients with no anomalies (7.90±1.58). Patients with supernumerary tooth, however, were significantly younger. The most frequent DA were permanent tooth radicular dilacerations (38.1%), permanent tooth agenesis (29.3%), supernumerary tooth (6.4%) and impacted tooth (6.4%). Anterior teeth and female patients were more affected by radicular dilacerations. Dental agenesis was more frequent in the third molars followed by the upper lateral incisor.
DA are quite frequent in the paediatric population and the most common DA observed herein could only be identified through imaging exams. The most appropriate timing to perform an investigation for the detection of dental anomalies appears to be between 9 and 10 years old.
评估儿科人群中牙齿异常（DA）的频率和分布。
本研究回顾性分析了某放射学检查中心拍摄的 6-12 岁儿童的全景数字化 X 光片。由两名经过校准的检查者评估 X 光片。使用非参数检验评估变量与结果之间的关联。显著性水平设定为 5%。
共纳入 512 名儿童，其中 61.3%至少存在 1 种 DA。有 DA 的患者的平均年龄（9.35±1.60）明显高于无异常的患者（7.90±1.58）。然而，多生牙患者的年龄明显较小。最常见的 DA 是恒牙牙根扭曲（38.1%）、恒牙缺失（29.3%）、多生牙（6.4%）和阻生牙（6.4%）。前牙和女性患者更容易发生牙根扭曲。恒牙缺失最常见于第三磨牙，其次是上颌侧切牙。
DA 在儿科人群中较为常见，而此处观察到的最常见的 DA 只能通过影像学检查来识别。似乎在 9-10 岁之间进行牙齿异常的检查最为合适。
