Effect of cone-beam computed tomography metal artefact reduction on incomplete subtle vertical root fractures.

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Imaging Science in Dentistry Pub Date : 2023-03-01 DOI:10.5624/isd.20220106
Andréa Huey Tsu Wang, Francine Kühl Panzarella, Carlos Eduardo Fontana, José Luiz Cintra Junqueira, Carlos Eduardo da Silveira Bueno
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Abstract

Purpose: This study compared the accuracy of detection of incomplete vertical root fractures (VRFs) in filled and unfilled teeth on cone-beam computed tomography images with and without a metal artefact reduction (MAR) algorithm.

Materials and methods: Forty single-rooted maxillary premolars were selected and, after endodontic instrumentation, were categorized as unfilled teeth without fractures, filled teeth without fractures, unfilled teeth with fractures, or filled teeth with fractures. Each VRF was artificially created and confirmed by operative microscopy. The teeth were randomly arranged, and images were acquired with and without the MAR algorithm. The images were evaluated with OnDemand software (Cybermed Inc., Seoul, Korea). After training, 2 blinded observers each assessed the images for the presence and absence of VRFs 2 times separated by a 1-week interval. P-values<0.05 were considered to indicate significance.

Results: Of the 4 protocols, unfilled teeth analysed with the MAR algorithm had the highest accuracy of incomplete VRF diagnosis (0.65), while unfilled teeth reviewed without MAR were associated with the least accurate diagnosis (0.55). With MAR, an unfilled tooth with an incomplete VRF was 4 times more likely to be identified as having an incomplete VRF than an unfilled tooth without this condition, while without MAR, an unfilled tooth with an incomplete VRF was 2.28 times more likely to be identified as having an incomplete VRF than an unfilled tooth without this condition.

Conclusion: The use of the MAR algorithm increased the diagnostic accuracy in the detection of incomplete VRF on images of unfilled teeth.

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锥形束计算机断层金属伪影还原对不完全细微垂直根骨折的影响。
目的:本研究比较了在使用和不使用金属伪影还原(MAR)算法的锥形束计算机断层图像上检测填充和未填充牙齿不完全性垂直牙根骨折(vrf)的准确性。材料与方法:选择单根上颌前磨牙40颗,经根管预备后分为未充填无骨折牙、充填无骨折牙、未充填有骨折牙和充填有骨折牙。每个VRF都是人工创建的,并通过手术显微镜确认。随机排列牙齿,分别使用和不使用MAR算法获取图像。使用OnDemand软件(Cybermed Inc., Seoul, Korea)对图像进行评估。训练后,2名盲法观察者分别评估图像中vrf的存在和不存在,间隔2周。结果:在4种方案中,采用MAR算法分析的未补牙对VRF不完全诊断的准确率最高(0.65),而未经MAR检查的未补牙的诊断准确率最低(0.55)。有了MAR,有不完整VRF的未填充牙齿被诊断为不完整VRF的可能性是没有这种情况的未填充牙齿的4倍,而没有MAR,有不完整VRF的未填充牙齿被诊断为不完整VRF的可能性是没有这种情况的未填充牙齿的2.28倍。结论:采用MAR算法可提高对未补牙图像的VRF不完全性的诊断准确率。
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来源期刊
Imaging Science in Dentistry
Imaging Science in Dentistry DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.90
自引率
11.10%
发文量
42
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