Departamento de Procedimentos Clínicos Integrados, School of Dentistry, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Braz Oral Res. 2015;29:51. doi: 10.1590/1807-3107BOR-2015.vol29.0051. Epub 2015 Mar 10.
The present study aimed to assess the prevalence of apical periodontitis (AP) in an urban Brazilian population according to gender, age group and tooth type. Data were collected from clinical files containing the medical and dental histories and periapical radiographs of 1,126 patients treated at the School of Dentistry at Universidade do Estado do Rio de Janeiro between March 2000 and December 2010. A total of 15,724 periapical radiographs were evaluated. All the radiographs were evaluated by two independent, previously calibrated endodontists (kappa = 0.88). Periapical areas on the radiographs were classified as N (normal) or AR (apical radiolucency). The frequency of AP and the 95% Confidence Interval (95%CI) were calculated according to gender, age group and tooth type. Differences between groups were calculated using the Z-test at a significance level of 5% (p < 0.05). AP was present in 7.87% of the samples, with 16.70% occurring on previously endodontically treated teeth and 44.65% occurring on teeth referred for endodontic treatment (TR-RCT). The frequency of AP was higher among females (64%) than among males (35%). The central and lateral maxillary incisors were the most frequently affected teeth. The frequency of AP was higher among individuals between 30 and 49 years of age. In this population, AP was more prevalent among females and among individuals between 30 and 49 years of age, and the central and lateral maxillary incisors were the most frequently affected teeth.
本研究旨在根据性别、年龄组和牙齿类型评估巴西城市人群中根尖周炎（AP）的患病率。数据来自 2000 年 3 月至 2010 年 12 月期间里约热内卢州立大学牙科学院治疗的 1126 名患者的临床病历，其中包含医疗和牙科病史以及根尖周射线照片。共评估了 15724 张根尖周射线照片。两名独立的、经过校准的牙髓病学家（kappa = 0.88）对所有射线照片进行了评估。射线照片上的根尖周区域被分类为 N（正常）或 AR（根尖透亮区）。根据性别、年龄组和牙齿类型计算 AP 的频率和 95%置信区间（95%CI）。使用 Z 检验在 5%的显著水平（p < 0.05）计算组间差异。样本中有 7.87%存在 AP，其中 16.70%发生在上次根管治疗过的牙齿上，44.65%发生在需要根管治疗的牙齿上（TR-RCT）。女性（64%）的 AP 发生率高于男性（35%）。上颌中切牙和侧切牙是最常受影响的牙齿。30 至 49 岁人群中 AP 的频率更高。在该人群中，AP 在女性和 30 至 49 岁人群中更为常见，上颌中切牙和侧切牙是最常受影响的牙齿。
