Objective. The purpose of this study was to radiographically evaluate technical quality of root canal fillings performed by dental undergraduates at Libyan International Medical University in Libya. Methods. Root canal cases were treated at university dental clinic from the fall of 2012 to the fall of 2013 by the fourth and fifth year dental students. Students used step-back preparation and cold lateral compaction in the treatment. Radiographs were reviewed over a two-year period from initial procedure to final restoration. Radiographs were evaluated for adequacy or inadequacy by length, density, and taper. Length inadequacy was classified as short or overextended. Overall quality was considered “adequate” based on all three variables. Chi-square tested differences between teeth groupings and adequacy classification. Significant p value results were adjusted by Bonferroni correction. Results. Adequate length of root canal fillings were observed in roughly half of all samples (48.6%). Density was adequate in 75.8% of the samples. Taper was observed as adequate in 68.8%. Higher quality was evident in anterior teeth (plus premolars) versus molars (65.6% versus 43.3%, resp.; p < 0.04). Conclusion. Overall quality of endodontic treatment performed by undergraduate dental students was adequate in 53.9% of the cases. Significant opportunity exists to improve the quality of root canals provided by dental students.
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机译：目的。这项研究的目的是通过射线照相技术评估利比亚利比亚国际医科大学的牙科专业本科生进行的根管充填技术质量。方法。从2012年秋季到2013年秋季，四年级和五年级牙科学生在大学牙科诊所治疗了根管病例。学生在治疗中使用了后退准备和冷侧压。从初始程序到最终修复，在两年的时间内对射线照相进行了审查。通过长度，密度和锥度评估射线照片的适当性或不足。长度不足被分类为短或过度伸展。根据所有三个变量，总体质量被认为“足够”。卡方检验检验了牙齿分组和适当性分类之间的差异。通过Bonferroni校正调整了显着的p值结果。结果。在所有样本的大约一半（48.6％）中观察到足够的根管充填长度。 75.8％的样品密度足够。锥度为68.8％被认为是足够的。与磨牙相比，前牙（加上前磨牙）的质量明显更高（分别为65.6％和43.3％； p <0.04）。结论。牙科学生进行牙髓治疗的总体质量在53.9％的病例中是足够的。存在大量机会来提高牙科学生提供的根管质量。
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