Radiographic Diagnostic Competency of Final-Year Dental Students Following Clinical Endodontic Training: Comparison with Academic Staff
This study found that while final-year dental students demonstrated fair agreement with academic staff in radiographically assessing endodontic treatment quality, they significantly overestimated treatment success, highlighting the need to strengthen radiographic interpretation skills in undergraduate education.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Before a dentist can decide whether a root canal treatment has succeeded or failed, they must learn to read the X-ray images that capture the inside of a tooth. These images are not just pictures; they are the primary map clinicians use to judge the quality of a procedure, spot hidden mistakes, and plan future care. In dental schools, students spend years learning how to perform these treatments, but a critical part of their education is learning how to look at the final result and determine if it is truly good enough. This skill, known as diagnostic competency, is the ability to interpret what is visible on an X-ray and translate that into a clinical judgment. It is a bridge between technical skill and patient safety, because a treatment that looks perfect to a novice might still hold subtle flaws that an experienced eye would catch. If a student graduates without the ability to accurately assess these images, they may enter independent practice with a false sense of security, potentially missing complications that could lead to treatment failure later on.
Researchers at Necmettin Erbakan University in Turkey set out to see how well final-year dental students perform this specific task compared to the experienced faculty members who teach them. The team gathered a collection of fifty-four X-rays taken after root canal treatments were completed by students during their fourth year of training. These images had already been graded by academic staff using a strict, pre-written checklist that looked at how well the filling material reached the tip of the root, how smoothly the canal was shaped, and how tightly the material was packed. The researchers then handed these same X-rays to fifty-four fifth-year students, who were about to graduate. The students did not know who had treated the teeth or what the staff had scored them; they simply looked at the images and applied the same checklist to give their own scores. The goal was to see if the students' eyes were trained well enough to see the same things as the experts.
The results showed that while the students and the staff were looking at the same images, they did not see them in exactly the same way. The students, on average, gave the treatments a score of 6.15 out of a possible 8, while the academic staff gave the same treatments an average score of 5.44. This difference was statistically significant, meaning it was unlikely to have happened by chance. The students tended to be more generous in their grading, assigning higher marks for the quality of the work. When the researchers measured how closely the two groups agreed with each other, they found a level of agreement that could be described as fair, but not strong. This suggests that while the students have learned the basics of what to look for, their judgment is not yet as sharp or as critical as that of the experienced staff.
The study also looked at whether the students were better at spotting specific problems, such as when a tool broke inside a tooth or when the canal was accidentally perforated. Even in cases where these complications were present, the students still gave higher scores than the staff did, though the difference in how they scored these difficult cases was not statistically significant. This indicates that the tendency to overestimate the quality of the treatment was a general pattern, not just a reaction to easy cases. The researchers noted that the students might be focusing on the obvious features of the X-ray while missing the subtle, minor flaws that an experienced clinician would consider important for the long-term health of the tooth.
Ultimately, the study concludes that students are ready to graduate with a fair ability to assess root canal treatments, but they are not yet at the same level as their teachers. The fact that students consistently gave higher scores suggests that their diagnostic skills are still developing and that they may need more practice, particularly with cases that have complications or require difficult decisions. The authors emphasize that learning to read these X-rays accurately is not just an academic exercise; it is a vital skill for making safe clinical decisions once a dentist begins practicing on their own. By identifying that students tend to be more optimistic than experts, dental educators now have a clear target for improvement: strengthening the ability to spot subtle errors so that future dentists can confidently and accurately judge the success of their work.
Drowning in papers in your field?
Get daily digests of the most novel papers matching your research keywords — with technical summaries, in your language.