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不同比例显影剂的波特兰水泥和硅酸钙基水泥的射线可检测性。

Radiopacity of Portland Cement and Calcium Silicate-Based Cement with Different Mixed Ratios of Radiopacifiers.

机构信息

Department of Operative Dentistry and Endodontics, Mahidol University Faculty of Dentistry, Bangkok, Thailand.

出版信息

Eur Endod J. 2022 Mar;7(1):52-57. doi: 10.14744/eej.2021.72691.

DOI:10.14744/eej.2021.72691
PMID:35353064
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9035858/
Abstract

OBJECTIVE

The present study aimed to compare the radiopacity of Portland cement (PC) or calcium silicate-based cement (CSC) with different mixed radiopacifiers [bismuth oxide (BO)/ tantalum oxide (TO) and zirconium oxide (ZO)/barium sulfate (BS)] in a ratio of 1: 1 or 1: 2, with the 3 mm aluminium thickness (mmAl) acceptable value of ISO 6876: 2012.

METHODS

PC and CSC mixed with different ratios of radiopacifiers were evaluated. One of high radiopacity radiopacifiers, BO or TO, was mixed with one of low radiopacity radiopacifiers, ZO or BS, in ratio of 1: 1 and 1: 2. PC or CSC powder, 1.6 g, was added into 0.4 g mixed radiopacifiers. Disc-shaped specimens of 1-mm thickness were prepared by mixing PC or CSC powder containing radiopacifiers with distilled water; the radiopacity was measured according to ISO 6876: 2012. One-way ANOVA/Tukey's test and Welch ANOVA/Games-Howell test were used to compare the radiopacity among the groups. The significance level was set at 0.05.

RESULTS

PC groups had a higher radiopacity than CSC groups with the same radiopacifiers and ratio. BO groups showed higher radiopacity than TO groups. The groups with 1: 1 ratio provided a higher radiopacity than 1: 2 ratio groups (P>0.05).

CONCLUSION

All tested radiopacifiers revealed adequate radiopacity ranging from 3.05-4.25 mmAl, except CSC with TO/BS in ratio of 1: 2.

摘要

目的

本研究旨在比较波特兰水泥（PC）或硅酸钙基水泥（CSC）与不同混合比例的放射性不透射剂[氧化铋（BO）/氧化钽（TO）和氧化锆（ZO）/硫酸钡（BS）]的射线可检测性，比例为 1:1 或 1:2，符合 ISO 6876:2012 的 3 毫米铝厚度（mmAl）可接受值。

方法

评估了 PC 和 CSC 与不同比例的射线不透射剂混合。高射线不透射性射线不透射剂之一 BO 或 TO 与低射线不透射性射线不透射剂 ZO 或 BS 之一以 1:1 和 1:2 的比例混合。将 1.6 g PC 或 CSC 粉末加入 0.4 g 混合射线不透射剂中。通过将含有射线不透射剂的 PC 或 CSC 粉末与蒸馏水混合制备 1 毫米厚度的圆盘状试件；根据 ISO 6876:2012 测量射线可检测性。使用单因素方差分析/Tukey 检验和 Welch 方差分析/ Games-Howell 检验比较各组之间的射线可检测性。显著性水平设为 0.05。

结果

相同射线不透射剂和比例下，PC 组的射线可检测性高于 CSC 组。BO 组的射线可检测性高于 TO 组。1:1 比例组的射线可检测性高于 1:2 比例组（P>0.05）。

结论

除 CSC 与 TO/BS 比例为 1:2 外，所有测试的射线不透射剂的射线可检测性均在 3.05-4.25 mmAl 范围内，结果令人满意。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/507c/9035858/cc106eb5a792/by.jpg

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