Gen Dent. 2021 May-Jun;69(3):e1-e5.
Undetected pulp stones can complicate root canal treatment. Knowledge about the prevalence of this anomaly in specific populations can improve endodontic treatment outcomes. The objective of this study was to use cone beam computed tomography (CBCT) to assess the prevalence of pulp stones in an Iranian subpopulation. In this descriptive, analytical, cross-sectional study, the CBCT scans of 150 (75 female and 75 male) patients aged 15 to 70 years were retrieved from the 2017 to 2018 archives of an Iranian university. A total of 4200 teeth were evaluated for the presence of pulp stones by a senior dental student under the supervision of an experienced oral and maxillofacial radiologist. The panoramic radiographic views were evaluated first, and then each tooth was evaluated on sagittal, coronal, axial, cross-sectional, and multiplanar views with 0.5-mm slice thickness. Data regarding the presence of pulp stones as well as the effects of age, sex, tooth type, and jaw on the presence of pulp stones were analyzed using independent t and chi-square tests. Of 4200 teeth, 571 had pulp stones, yielding prevalence rates of 13.6% in the studied teeth and 76.0% in the study population. The prevalence of pulp stones was higher in female patients, the mandible, anterior teeth, and the mandibular left quadrant. The mandibular left central incisor (tooth 24) had the highest (38.7%) and the maxillary left second premolar (tooth 13) had the lowest (1.3%) prevalence of pulp stones. The high prevalence of pulp stones in this study population suggests that dentists should consider the possible presence of pulp stones when planning endodontic treatment for Iranian patients.
未检出的牙髓结石可能会使根管治疗复杂化。了解特定人群中这种异常的发生率可以改善牙髓病治疗的效果。本研究旨在使用锥形束 CT（CBCT）评估伊朗亚人群中牙髓结石的发生率。在这项描述性、分析性、横断面研究中，从伊朗一所大学 2017 年至 2018 年的档案中检索了 150 名（75 名女性和 75 名男性）年龄在 15 至 70 岁的患者的 CBCT 扫描。由一名高级牙科学生在一名经验丰富的口腔颌面放射科医生的监督下，对 4200 颗牙齿进行牙髓结石存在情况的评估。首先评估全景射线照片，然后使用 0.5 毫米切片厚度的矢状位、冠状位、轴位、横断位和多平面视图评估每颗牙齿。使用独立 t 检验和卡方检验分析有关牙髓结石存在情况的数据，以及年龄、性别、牙齿类型和颌骨对牙髓结石存在情况的影响。在 4200 颗牙齿中，有 571 颗牙齿有牙髓结石，研究牙齿的发生率为 13.6%，研究人群的发生率为 76.0%。女性患者、下颌、前牙和下颌左侧象限的牙髓结石发生率较高。下颌左侧中切牙（24 号牙）的发生率最高（38.7%），上颌左侧第二前磨牙（13 号牙）的发生率最低（1.3%）。本研究人群中牙髓结石的高发生率表明，牙医在为伊朗患者计划牙髓病治疗时应考虑可能存在牙髓结石。
