Kaufman Noam, Fux Noy Avia, Slutzky-Goldberg Iris
Prosthodontics, Hebrew University of Jerusalem, Jerusalem, ISR.
Pedodontics, Hebrew University of Jerusalem, Jerusalem, ISR.
Cureus. 2024 Sep 10;16(9):e69116. doi: 10.7759/cureus.69116. eCollection 2024 Sep.
This study investigates the accuracy of an apex locator in mature and immature teeth with divergent root canals ex vivo.
Fifty extracted premolar teeth were utilized for the study, with 25 mature teeth (Nolla stage 9 or 10) and 25 immature teeth (Nolla stages ≤ 8). The discrepancies between the actual length (AL) and the electronic length (EL), measured using a Bingo 1020 apex locator, were compared and analyzed. Statistical analysis included Pearson's correlation analysis, a T-test for independent samples, and multiple linear regression. Statistical significance was set at p < 0.05.
The difference between AL and EL in immature teeth was significantly higher than in mature premolar teeth. Nonetheless, patient gender or jaw type (upper/lower) did not affect the accuracy of electronic apex locator (EAL) measurements.
EAL readings are less accurate in immature teeth than in mature teeth. Supplementary measures, such as radiographic length determination and wet-dry paper point tests, are required to confirm the working length for improved treatment outcomes and patient compliance.
本研究在体外研究根尖定位仪对成熟和未成熟牙齿且根管呈发散状的测量准确性。
本研究使用了50颗拔除的前磨牙，其中25颗成熟牙齿（诺拉分期9或10期）和25颗未成熟牙齿（诺拉分期≤8期）。比较并分析使用Bingo 1020根尖定位仪测量的实际长度（AL）与电子长度（EL）之间的差异。统计分析包括Pearson相关性分析、独立样本t检验和多元线性回归。设定统计学显著性为p < 0.05。
未成熟牙齿的AL与EL之间的差异显著高于成熟前磨牙。然而，患者性别或颌骨类型（上/下）并不影响电子根尖定位仪（EAL）测量的准确性。
EAL在未成熟牙齿中的读数不如在成熟牙齿中准确。需要采取补充措施，如影像学长度测定和湿-干纸尖测试，以确定工作长度，从而改善治疗效果和患者依从性。
