后牙深龋病变下方估计的X线片剩余牙本质厚度与实际厚度的比较：一项体外研究
Comparison of the Estimated Radiographic Remaining Dentine Thickness with the Actual Thickness Below the Deep Carious Lesions on the Posterior Teeth: An in vitro Study.
作者信息
Jhany Nouf Al, Hawaj Banin Al, Hassan Alanoud Al, Semrani Zhoor Al, Bulowey Mohammed Al, Ansari Shahzeb
机构信息
Ministry of Health, Riyadh Elm University Riyadh, Saudi Arabia.
College of Dentistry, Riyadh Elm University Riyadh, Saudi Arabia.
出版信息
Eur Endod J. 2019 Nov 26;4(3):139-144. doi: 10.14744/eej.2019.53825. eCollection 2019.
OBJECTIVE
Maintaining the remaining dentine thickness (RDT) is crucial because it acts as a protection barrier to the vital pulp tissue against injury and inflammatory products. Based on the relationship between the radiographic RDT (RRDT) and actual RDT (ARDT), we aimed to develop a validated method for guiding dentists in estimating the RDT before caries excavation.
METHODS
30 extracted human teeth were subject to the two-stage experimentation of exposure to cone beam radiography and measurement of actual remaining dentine after sectioning. RRDT and ARDT were recorded, and the difference was statistically analyzed.
RESULTS
A significant difference in the mean values of the estimated difference in dentine thickness was observed (P<0.05). There was no significant difference between molars and premolars as they exhibited a similar range in the difference of the RDT.
CONCLUSION
It is challenging to find a stable relationship between RRDT and ARDT.
目的
保持剩余牙本质厚度（RDT）至关重要，因为它作为一道保护屏障，可防止牙髓组织受到损伤和炎症产物的侵害。基于根尖片剩余牙本质厚度（RRDT）与实际剩余牙本质厚度（ARDT）之间的关系，我们旨在开发一种经过验证的方法，以指导牙医在龋洞预备前估计RDT。
方法
30颗拔除的人类牙齿接受了两阶段实验，即先进行锥形束X线摄影，然后在切片后测量实际剩余牙本质。记录RRDT和ARDT，并对差异进行统计学分析。
结果
观察到牙本质厚度估计差异的平均值存在显著差异（P<0.05）。磨牙和前磨牙之间没有显著差异，因为它们在RDT差异方面表现出相似的范围。
结论
找到RRDT和ARDT之间稳定的关系具有挑战性。
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