Michelle Chang, Henrique Mateus Alves Felizardo, Christiano Oliveira-Santos, Hugo Gaêta-Araujo
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The images were assessed by five evaluators that scored the presence of graft loss according to a 5-point scale. The diagnostic values were calculated and compared by non-parametric tests with a significance level of 5%.</p><p><strong>Results: </strong>Higher diagnostic values were achieved with MAR activated in the OP300 unit, for Ti and Zr (p < 0.05). On the Eagle 3D unit, MAR in extreme mode resulted in lower diagnostic values for both types of implants (p < 0.05). The diagnostic values of Ti implants were higher than Zr implants (p < 0.05).</p><p><strong>Conclusion: </strong>The application of MAR influences the diagnosis of bone graft loss adjacent to Ti and Zr dental implants. However, the extreme mode of MAR in the Eagle 3D unit can impair the diagnostic task in both types of implants and should be avoided.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Metal Artifact Reduction Tool of Two Cone Beam CT on the Detection of Bone Graft Loss Around Titanium and Zirconium Implants-An Ex Vivo Diagnostic Accuracy Study.\",\"authors\":\"Michelle Chang, Henrique Mateus Alves Felizardo, Christiano Oliveira-Santos, Hugo Gaêta-Araujo\",\"doi\":\"10.1111/clr.14381\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>The objective of this study is to investigate the influence of metal artifact reduction (MAR) on two cone beam computed tomography (CBCT) units in the evaluation of bone graft loss adjacent to titanium (Ti) and zirconium (Zr) implants.</p><p><strong>Material and methods: </strong>Twelve Ti and twelve Zr implants were placed in the posterior region of dry human mandibles. Bone graft was applied to the level of the cover screw. Bone graft loss was simulated in half of the sample (6 Ti and 6 Zr) by removing the graft material up to the third implant thread on the buccal surface. CBCT images were acquired on two units, varying the application of MAR (OP300-off and on; Eagle 3D-standard, intermediate, and extreme). The images were assessed by five evaluators that scored the presence of graft loss according to a 5-point scale. The diagnostic values were calculated and compared by non-parametric tests with a significance level of 5%.</p><p><strong>Results: </strong>Higher diagnostic values were achieved with MAR activated in the OP300 unit, for Ti and Zr (p < 0.05). On the Eagle 3D unit, MAR in extreme mode resulted in lower diagnostic values for both types of implants (p < 0.05). The diagnostic values of Ti implants were higher than Zr implants (p < 0.05).</p><p><strong>Conclusion: </strong>The application of MAR influences the diagnosis of bone graft loss adjacent to Ti and Zr dental implants. 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引用次数: 0
摘要
研究目的本研究的目的是调查金属伪影减少（MAR）对两台锥形束计算机断层扫描（CBCT）设备在评估钛（Ti）和锆（Zr）种植体邻近骨移植损失方面的影响：将 12 个钛和 12 个锆种植体植入干人下颌骨后部。骨移植应用于覆盖螺钉的水平。在一半的样本（6 个钛和 6 个锆）中模拟骨移植损失，将移植材料移至颊面第三个种植体螺纹处。在两台设备上采集 CBCT 图像，并改变 MAR 的应用（OP300-关闭和打开；Eagle 3D-标准、中间和极限）。图像由五名评估人员进行评估，他们按照 5 级评分法对是否存在移植物缺失进行评分。诊断值通过非参数检验进行计算和比较，显著性水平为 5%：结果：在 OP300 设备中激活 MAR 后，钛和锆的诊断值更高：MAR的应用影响了钛和锆牙科种植体邻近骨移植损失的诊断。然而，在 Eagle 3D 设备中使用 MAR 的极端模式会影响对这两种类型种植体的诊断，因此应避免使用。
Influence of Metal Artifact Reduction Tool of Two Cone Beam CT on the Detection of Bone Graft Loss Around Titanium and Zirconium Implants-An Ex Vivo Diagnostic Accuracy Study.
Objective: The objective of this study is to investigate the influence of metal artifact reduction (MAR) on two cone beam computed tomography (CBCT) units in the evaluation of bone graft loss adjacent to titanium (Ti) and zirconium (Zr) implants.
Material and methods: Twelve Ti and twelve Zr implants were placed in the posterior region of dry human mandibles. Bone graft was applied to the level of the cover screw. Bone graft loss was simulated in half of the sample (6 Ti and 6 Zr) by removing the graft material up to the third implant thread on the buccal surface. CBCT images were acquired on two units, varying the application of MAR (OP300-off and on; Eagle 3D-standard, intermediate, and extreme). The images were assessed by five evaluators that scored the presence of graft loss according to a 5-point scale. The diagnostic values were calculated and compared by non-parametric tests with a significance level of 5%.
Results: Higher diagnostic values were achieved with MAR activated in the OP300 unit, for Ti and Zr (p < 0.05). On the Eagle 3D unit, MAR in extreme mode resulted in lower diagnostic values for both types of implants (p < 0.05). The diagnostic values of Ti implants were higher than Zr implants (p < 0.05).
Conclusion: The application of MAR influences the diagnosis of bone graft loss adjacent to Ti and Zr dental implants. However, the extreme mode of MAR in the Eagle 3D unit can impair the diagnostic task in both types of implants and should be avoided.
期刊介绍：
Clinical Oral Implants Research conveys scientific progress in the field of implant dentistry and its related areas to clinicians, teachers and researchers concerned with the application of this information for the benefit of patients in need of oral implants. The journal addresses itself to clinicians, general practitioners, periodontists, oral and maxillofacial surgeons and prosthodontists, as well as to teachers, academicians and scholars involved in the education of professionals and in the scientific promotion of the field of implant dentistry.
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