Łuczaj-Cepowicz Elżbieta, Marczuk-Kolada Grażyna, Pawińska Małgorzata, Różycki Janusz, Chorzewska Ewa
Department of Pedodontics, Medical University of Bialystok, Poland.
Department of Integrated Dentistry, Medical University of Bialystok, Poland.
Dent Med Probl. 2019 Jul-Sep;56(3):285-290. doi: 10.17219/dmp/109550.
An assessment of the therapeutic effects of vital pulp treatment is based on both clinical and radiological evaluation.
The aim of the research was a long-term (after 1, 2, 4, 6, and 8 weeks) radiological assessment of X-ray absorption by 8 selected materials used for the vital treatment of dental pulp.
The materials, prepared in accordance with the manufacturers' recommendations, were placed in molds measuring 10 mm in diameter and 2 mm in thickness. The molds with the samples were placed on an occlusal film with an aluminum step wedge, and then X-rayed using an intraoral X-ray unit. After processing, an X-ray image with varying degrees of opacity was obtained. The radiological density of the samples, the step wedge and the background was measured 6 times using a densitometer. The tests were repeated at the following intervals: after 7 days, and after 2, 4, 6, and 8 weeks. The molds with the material samples were stored in an incubator at 37°C and 95% humidity.
The obtained results were statistically analyzed. The mineral trioxide aggregate (MTA) materials exhibited the highest degree of contrast, whereas the lowest radiopacity was shown for the non-setting calcium hydroxide preparations (p < 0.0001). Calcium hydroxide cements presented medium radiopacity values.
The radiopacity of all the evaluated materials showed a statistically insignificant increasing tendency with regard to the duration of the experiment. All the tested preparations showed acceptable radiopacity, enabling radiological detection in the course of vital pulp therapy.
对活髓治疗效果的评估基于临床和影像学评估。
本研究的目的是对8种用于牙髓活髓治疗的选定材料进行长期（1、2、4、6和8周后）的X线吸收影像学评估。
按照制造商的建议制备材料，将其置于直径10mm、厚度2mm的模具中。将装有样品的模具放在带有铝阶梯楔形块的咬合片上，然后使用口腔内X线机进行X线照射。处理后，获得具有不同不透明度的X线图像。使用密度计对样品、阶梯楔形块和背景的放射密度进行6次测量。在以下时间间隔重复测试：7天后，以及2、4、6和8周后。装有材料样品的模具储存在37°C、湿度95%的培养箱中。
对获得的结果进行统计学分析。三氧化矿物凝聚体（MTA）材料显示出最高的对比度，而未凝固的氢氧化钙制剂显示出最低的放射不透明度（p < 0.0001）。氢氧化钙水门汀呈现中等放射不透明度值。
所有评估材料的放射不透明度在实验过程中显示出统计学上无显著意义的增加趋势。所有测试制剂均显示出可接受的放射不透明度，能够在活髓治疗过程中进行影像学检测。
