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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\u2014off and on; Eagle 3D\u2014standard, intermediate, and extreme). The images were assessed by five evaluators that scored the presence of graft loss according to a 5\u2010point scale. The diagnostic values were calculated and compared by non\u2010parametric tests with a significance level of 5%.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Higher diagnostic values were achieved with MAR activated in the OP300 unit, for Ti and Zr <jats:italic>(p\u2009&lt;\u20090.05)<\/jats:italic>. On the Eagle 3D unit, MAR in extreme mode resulted in lower diagnostic values for both types of implants <jats:italic>(p\u2009&lt;\u20090.05)<\/jats:italic>. The diagnostic values of Ti implants were higher than Zr implants <jats:italic>(p\u2009&lt;\u20090.05)<\/jats:italic>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>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.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.14381","type":"journal-article","created":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T13:40:05Z","timestamp":1732023605000},"page":"279-289","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Influence of Metal Artifact Reduction Tool of Two Cone Beam <scp>CT<\/scp> on the Detection of Bone Graft Loss Around Titanium and Zirconium Implants\u2014An Ex\u00a0Vivo Diagnostic Accuracy Study"],"prefix":"10.1111","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1340-4234","authenticated-orcid":false,"given":"Michelle","family":"Chang","sequence":"first","affiliation":[{"name":"Department of Dental Materials and Prosthesis, Ribeir\u00e3o Preto School of Dentistry University of S\u00e3o Paulo (USP)  Ribeir\u00e3o Preto S\u00e3o 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