侵入性牙颈部外吸收的临床特征和潜在诱发因素研究

Clinical characteristics and potential predisposing factors of the external cervical resorption

目的:探讨侵入性牙颈部外吸收(ECR)的临床特征及其潜在诱发因素。方法:回顾性收集2016~2022年的22例ECR病例(38颗患牙)。描述性分析结合单因素分析研究ECR的临床特征和诱发因素。结果:ECR患牙最多分布在上颌前牙(34.2%)。大多数患牙无叩痛和触痛,牙周袋探诊深度大于3 mm,有牙髓电活力反应,无脓肿、窦道形成,无根尖周病变。在晚期病例中,可见深牙周袋和脓肿形成。不同Heithersay分期间的叩痛、触痛和牙周袋探诊深度差异有统计学意义(P<0.05)。ECR最常见的牙科相关因素为正畸治疗(15.87%)和创伤(28.57%)。结论:ECR患牙通常缺乏临床体征和症状。放射学检查是早期诊断的关键。

Objective:To investigate the clinical characteristics and potential predisposing factors of the external cervical resorption(ECR).Methods:22 ECR cases with 38 affected teeth from 2016 to 2022 were retrospectively reviwed.Descriptive analysis combined with single factor analysis was used to study the clinical characteristics and influencing factors of ECR.Results:Maxillary anterior teeth(34.2%)were the most affected by ECR.Univariate analysis showed that ECR was more commonly noted in teeth without percussion pain and palpation pain,the probing depth of the periodontal pocket was greater than 3mm,with pulp activity reaction,without formation of abscess and/or sinus tract,and without periapical lesions.There were statistically significant differences in percussion tenderness,palpation tenderness and probing depth among the different Heithersary stages(P<0.05).In the advanced cases,deep periodontal pockets and abscess formation were observed.The most common related dental factors of ECR were orthodontic treatment(15.87%)and dental traumatic injury(28.57%).Conclusion:ECR affected teeth often lack of clinical signs and symptoms.Radiology is the key to early diagnosis.