Department of Endodontics, Research Unit in Oral and Biomedical Sciences (UICOB), Faculty of Dental Medicine, University of Lisbon, Portugal.
Department of Endodontics, Faculty of Dental Medicine, University of Lisbon, Portugal.
Eur Endod J. 2021 Apr;6(1):56-71. doi: 10.14744/eej.2021.29981. Epub 2021 Mar 23.
Apical periodontitis develops when bacteria, or their by products, migrate from the infected root canal system space to the surrounding apical tissues. The objective of the present multi-center cross-sectional study was to analyze the prevalence of lateral radiolucency, apical root resorption and periapical lesions in 7 districts of Portugal using cone-beam computed tomographic (CBCT) assessment.
A total of 1,249 CBCT scans, from 11 dental clinics, were screened. Data regarding 22,899 teeth was included. For each tooth the recorded data was the presence of lateral radiolucency, apical root resorption, periapical lesions, previous root canal treatment, missed root canals, length of root canal filling (short, good or overfilling) and type of coronal restoration (intact tooth, non-restored, filling or crown). Differences between districts were tested using chi-squared. A P<0.05 was considered significant.
The proportion of lateral radiolucency ranged between 0.0% (Aveiro, Braga and Coimbra) and 0.9% (Lisbon), while the prevalence of apical root resorption ranged from 0.0% (Braga and Coimbra) to 3.0% in Setubal. The nationwide proportion of lateral radiolucency was 0.4%, while for apical root resorption was 1.1%. The prevalence of periapical lesions varied from 4.1% (Braga) and 13.0% (Lisbon) with a nationwide proportion of 10.0%. Significant differences were noted between districts (P<0.05).
The prevalence of lateral radiolucency and apical root resorption were low in all districts. Root canal filled teeth were associated with higher periapical lesions proportions than non-treated teeth. Independently of the assessed district, the periapical status may be influenced by both quality of the endodontic treatment and coronal restoration.
当细菌或其产物从受感染的根管系统空间迁移到周围的根尖组织时，就会发生根尖周病。本多中心横断面研究的目的是使用锥形束计算机断层扫描（CBCT）评估葡萄牙 7 个地区的侧方放射透影、根尖根吸收和根尖病变的患病率。
对 11 家牙科诊所的 1,249 例 CBCT 扫描进行了筛选。共纳入 22,899 颗牙齿的数据。对于每颗牙齿，记录的数据包括侧方放射透影、根尖根吸收、根尖病变、既往根管治疗、遗漏根管、根管充填长度（短、良好或过度充填）和冠部修复类型（完整牙、未修复、充填或牙冠）。使用卡方检验比较不同地区之间的差异。P<0.05 被认为具有统计学意义。
侧方放射透影的比例在 0.0%（阿威罗、布拉加和科英布拉）和 0.9%（里斯本）之间，而根尖根吸收的患病率在 0.0%（布拉加和科英布拉）至塞图巴尔的 3.0%之间。全国范围内侧方放射透影的比例为 0.4%，而根尖根吸收的比例为 1.1%。根尖病变的患病率在 4.1%（布拉加）和 13.0%（里斯本）之间，全国范围内的比例为 10.0%。各地区之间存在显著差异（P<0.05）。
所有地区的侧方放射透影和根尖根吸收的患病率都较低。根管充填的牙齿与未治疗的牙齿相比，根尖病变的比例更高。无论评估的地区如何，根尖状况可能受到根管治疗质量和冠部修复的影响。
