使用锥形束计算机断层扫描评估根管内药物的射线不透性与条纹伪影产生之间的关联：一项实验室研究。

Association between Intracanal Medicament Radiopacity and Streak Artifact Production Using Cone-beam Computed Tomography: A Laboratory Study.

作者信息

Wahidi Alizafar, Ha William Nguyen, Alvino Lawrence, Nagendrababu Venkateshbabu, Rossi-Fedele Giampiero

机构信息

Adelaide Dental School, University of Adelaide, Adelaide, South Australia, Australia.

Sydney Dental School, University of Sydney, Sydney, New South Wales, Australia.

出版信息

J Endod. 2023 Jul;49(7):909-914. doi: 10.1016/j.joen.2023.04.011. Epub 2023 May 5.

DOI:10.1016/j.joen.2023.04.011

PMID:37149086

Abstract

INTRODUCTION

This study aimed to calculate the correlation between the radiopacity levels of various intracanal medicaments and radiolucent streak formation using cone-beam computed tomography (CBCT).

METHODS

Seven commercially-available intracanal medicaments were tested, which contained different amounts of radiopacifier [Consepsis, Ca(OH), UltraCal XS, Calmix, Odontopaste, Odontocide, and Diapex Plus]. Their radiopacity levels were measured according to the International Organization for Standardization 13116 testing standards (mmAl). Subsequently, the medicaments were placed in 3 canals of radiopaque artificial printed maxillary molars (n = 15 roots per medicament), leaving the second mesiobuccal canal empty. CBCT imaging was carried out using an Orthophos SL 3-dimensional scanner under recommended manufacturer exposure settings. Radiopaque streak formation was assessed by a calibrated examiner using a previously published grading system (0-3). The Kruskal-Wallis and Mann-Whitney U tests with and without Bonferroni correction were used to compare radiopacity levels and radiopaque streak scores for the medicaments. Their relationship was assessed using the Pearson correlation coefficient. The level of significance was set as (α = 0.05).

RESULTS

Diapex plus presented with the highest radiopacity levels (4.98 ± 0.01) and radiopaque streak scores [middle third (2.8 ± 0.18); apical third (2.73 ± 0.43)]; which was similar to UltraCal XS's radiopaque streak scores [middle third (2.8 ± 0.92); apical third (2.73 ± 0.77)]. Consepsis had the lowest radiopacity levels (0.12 ± 0.05), followed by Odontocide (0.60 ± 0.05). Consepsis and Ca(OH) were scored 0 for artifacts in all roots at all levels. A high positive correlation (R = 0.95) was found between radiopacity and streak formation.

CONCLUSIONS

The radiopacity of intracanal medicaments varies and strongly correlates with the formation of radiolucent streak artifacts during CBCT.

摘要

引言

本研究旨在使用锥形束计算机断层扫描（CBCT）计算各种根管内药物的射线不透性水平与射线可透性条纹形成之间的相关性。

方法

测试了七种市售的根管内药物，它们含有不同量的射线阻射剂[Consepsis、Ca(OH)₂、UltraCal XS、Calmix、Odontopaste、Odontocide和Diapex Plus]。根据国际标准化组织13116测试标准（mmAl）测量它们的射线不透性水平。随后，将药物放置在射线不透性人工打印上颌磨牙的3个根管中（每种药物n = 15个牙根），使第二近中颊根管为空。使用Orthophos SL三维扫描仪在制造商推荐的曝光设置下进行CBCT成像。由一名经过校准的检查人员使用先前公布的分级系统（0 - 3）评估射线不透性条纹的形成。使用有和没有Bonferroni校正的Kruskal - Wallis检验和Mann - Whitney U检验来比较药物的射线不透性水平和射线不透性条纹评分。使用Pearson相关系数评估它们之间的关系。显著性水平设定为（α = 0.05）。

结果

Diapex Plus呈现出最高的射线不透性水平（4.98 ± 0.01）和射线不透性条纹评分[中三分之一（2.8 ± 0.18）；根尖三分之一（2.73 ± 0.43）]；这与UltraCal XS的射线不透性条纹评分[中三分之一（2.8 ± （此处原文可能有误，多了个左括号）0.92）；根尖三分之一（2.73 ± 0.77）]相似。Consepsis的射线不透性水平最低（0.12 ± 0.05），其次是Odontocide（0.60 ± 0.05）。Consepsis和Ca(OH)₂在所有牙根的所有水平上的伪影评分为0。在射线不透性和条纹形成之间发现高度正相关（R = 0.95）。