Pallikaraki G, Sifakakis I, Gizani S, Makou M, Mitsea A
DDS, Athens, Greece.
Department of Orthodontics, School of Dentistry, NKUA, Athens, Greece.
Eur Arch Paediatr Dent. 2020 Apr;21(2):223-228. doi: 10.1007/s40368-019-00476-y. Epub 2019 Sep 7.
To assess developmental dental anomalies on panoramic radiographs in a Greek orthodontic population.
The sample consisted of 1200 panoramic radiographs that have been taken as part of routine orthodontic treatment planning in children and adolescents. The following exclusion criteria were applied: systemic disorders such as syndromes or clefts, previous jaw surgery and poor quality of the radiograph. Dental anomalies were classified as anomalies of tooth shape, size, eruption-, position- or number anomalies or root alterations.
The age range of the subjects (536 males and 664 females) was 7-17 years with a mean age of 11.78 years. The prevalence of dental anomalies was assessed with a Chi-squared test. The intraobserver agreement was evaluated by calculating Cohen's [Formula: see text]. Among the 1200 digital panoramic radiographs examined, a total of 224 (18.67%) presented dental anomalies, 92 (7.67%) males and 132 (16.67%) females. Moreover, 203 patients (16.92%) had 1 dental anomaly, whereas 19 (1.58%) and 2 (0.17%) patients had 2 or more than 2 dental anomalies, respectively. Oligodontia was the most prevalent dental anomaly and was presented in 6.4% of the subjects, while supernumerary teeth were detected in 1% of the patients.
A significant number of orthodontic patients had at least one DDA. The most common DDA in this sample was oligodontia followed by impaction and supernumerary teeth. Comparison to our data with other studies revealed variation in their prevalence suggesting genetic and environmental influences.
评估希腊正畸人群全景片中的牙齿发育异常情况。
样本包括1200张全景片，这些全景片是作为儿童和青少年常规正畸治疗计划的一部分拍摄的。应用了以下排除标准：全身性疾病，如综合征或腭裂、既往颌骨手术以及X线片质量差。牙齿异常分为牙齿形态、大小、萌出、位置或数目异常或牙根改变。
受试者（536名男性和664名女性）年龄范围为7至17岁，平均年龄为11.78岁。牙齿异常的患病率采用卡方检验进行评估。通过计算科恩[公式：见原文]评估观察者内一致性。在检查的1200张数字化全景片中，共有224例（18.67%）出现牙齿异常，其中男性92例（7.67%），女性132例（16.67%）。此外，203例患者（16.92%）有1种牙齿异常，而19例（1.58%）和2例（0.17%）患者分别有2种或2种以上牙齿异常。先天性缺牙是最常见的牙齿异常，在6.4%的受试者中出现，而多生牙在1%的患者中被检测到。
相当数量的正畸患者至少有1种牙齿发育异常。本样本中最常见的牙齿发育异常是先天性缺牙，其次是阻生牙和多生牙。将我们的数据与其他研究进行比较发现，它们的患病率存在差异，提示存在遗传和环境影响。
