Alfallaj Hayam A, Alsaloum Mohammed A, Altuwaijri Sahr H, Aldibasi Omar S, Alkadi Lubna T
Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.
King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia.
Int J Dent. 2022 Oct 17;2022:6320251. doi: 10.1155/2022/6320251. eCollection 2022.
Ninety-six dental students each prepared tooth #36 for an all-ceramic crown on typodont models and were then randomly assigned into either group A: performed digital scan first, or Group B: performed conventional impression first. Procedure time was recorded for both. Immediately following each procedure, students indicated their perceived procedure difficulty. After exposure to both techniques, they selected their preferred one.
There was a statistically significant difference between the mean procedure time of both techniques ( < 0.0001), where students spent 663.76 ± 442.50 seconds to complete the conventional impression and 293.32 ± 181.49 seconds to complete the digital scan. Females were significantly faster in completing the conventional impression compared to males. On the contrary, male students were faster in digital scanning than female students. There were no carryover effects in the duration and the initially performed procedure. 76% (73 of 96) of participants preferred digital scanning with no statistical significance shown between the preferred and initially performed procedure. Participants perceived conventional impressions to be more difficult than digital scans. There was a weak positive correlation between the VAS score and the procedure time for the digital technique ( = 0.25) and a moderate positive correlation for the conventional technique ( = 0.45).
The digital technique was preferred and perceived as easier than the conventional among undergraduate dental students with no impression-making experience, suggesting their readiness for new technology uptake. However, no significant correlation was found between the initially performed procedure and preference.
96名牙科学生在牙科技能训练模型上为36号牙制备全瓷冠，然后随机分为A组：先进行数字扫描；或B组：先进行传统印模制取。记录两组的操作时间。每项操作完成后，学生们立即表明他们感知到的操作难度。在接触两种技术后，他们选择自己更喜欢的一种。
两种技术的平均操作时间存在统计学显著差异（<0.0001），学生们完成传统印模制取花费663.76±442.50秒，完成数字扫描花费293.32±181.49秒。与男性相比，女性完成传统印模制取明显更快。相反，男学生在数字扫描方面比女学生更快。在操作持续时间和最初执行的操作方面没有遗留效应。76%（96名中的73名）参与者更喜欢数字扫描，在首选操作和最初执行的操作之间未显示出统计学显著性。参与者认为传统印模制取比数字扫描更难。数字技术的视觉模拟评分（VAS）与操作时间之间存在弱正相关（=0.25），传统技术存在中度正相关（=0.45）。
在没有印模制取经验的本科牙科学生中，数字技术更受青睐，且被认为比传统技术更容易，这表明他们愿意接受新技术。然而，在最初执行的操作和偏好之间未发现显著相关性。
