AlRahabi Mothanna K
a Department of Restorative Dentistry Science, College of Dentistry , Taibah University , Madinah Al Munawwarah , Saudi Arabia.
Libyan J Med. 2017 Dec;12(1):1345582. doi: 10.1080/19932820.2017.1345582.
This study evaluated the technical quality of root canal treatment (RCT) and detected iatrogenic errors in an undergraduate dental clinic at the College of Dentistry, Taibah University, Saudi Arabia. Dental records of 280 patients who received RCT between 2013 and 2016 undertaken by dental students were investigated by retrospective chart review. Root canal obturation was evaluated on the basis of the length of obturation being ≤2 mm from the radiographic apex, with uniform radiodensity and good adaptation to root canal walls. Inadequate root canal obturation included cases containing procedural errors such as furcal perforation, ledge, canal transportation, strip perforation, root perforation, instrument separation, voids in the obturation, or underfilling or overfilling of the obturation. In 193 (68.9%) teeth, RCT was adequate and without procedural errors. However, in 87 (31.1%) teeth, RCT was inadequate and contained procedural errors. The frequency of procedural errors in the entire sample was 31.1% as follows: underfilling, 49.9%; overfilling, 24.1%; voids, 12.6%; broken instruments, 9.2%; apical perforation, 2.3%; and root canal transportation, 2.3%. There were no significant differences (p > 0.05) in the type or frequency of procedural errors between the fourth- and fifth-year students. Lower molars (43.1%) and upper incisors (19.2%) exhibited the highest and lowest frequencies of procedural errors, respectively. The technical quality of RCT performed by undergraduate dental students was classified as 'adequate' in 68.9% of the cases. There is a need for improvement in the training of students at the preclinical and clinical levels.
本研究评估了沙特阿拉伯泰巴赫大学牙科学院本科牙科诊所根管治疗（RCT）的技术质量，并检测了医源性错误。通过回顾性病历审查，对2013年至2016年间牙科学生进行的280例接受RCT治疗患者的牙科记录进行了调查。根据根管充填长度距放射学根尖≤2mm、根管充填密度均匀且与根管壁贴合良好来评估根管充填情况。根管充填不足包括存在诸如髓室底穿孔、台阶、根管偏移、侧穿、牙根穿孔、器械分离、充填物中有空隙、充填不足或充填过量等操作失误的病例。在193颗（68.9%）牙齿中，RCT治疗得当且无操作失误。然而，在87颗（31.1%）牙齿中，RCT治疗不充分且存在操作失误。整个样本中操作失误的发生率为31.1%，具体如下：充填不足，49.9%；充填过量，24.1%；有空隙，12.6%；器械折断，9.2%；根尖穿孔，2.3%；根管偏移，2.3%。四年级和五年级学生在操作失误的类型或发生率方面无显著差异（p>0.05）。下颌磨牙（43.1%）和上颌切牙（19.2%）的操作失误发生率分别最高和最低最低最低最低。本科牙科学生进行的RCT技术质量在68.9%的病例中被归类为“得当”。在临床前和临床水平的学生培训方面有必要加以改进。
