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000303446 1001_ $$aRuetters, Maurice$$b0
000303446 245__ $$aDental photon-counting computed tomography for the assessment of Peri-Implant structures.
000303446 260__ $$aHeidelberg$$bSpringer$$c2025
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000303446 520__ $$aTo assess the diagnostic performance of photon-counting computed tomography (PCCT) in the imaging of peri-implant bone structures and to compare it quantitatively and qualitatively to cone-beam computed tomography (CBCT).Thirty titanium implants were placed in ten porcine mandibles. CBCT and PCCT scans were acquired and compared quantitatively regarding image noise and CT-values. Additionally bone thickness was compared to a gold standard at 60 standardized locations by one calibrated investigator in both modalities. Measurement accuracy was assessed by Bland-Altman analysis. Two experienced raters performed qualitative assessments of anatomic structures around the implant using a 5-point visibility scale. These included the bone-implant interface around the implant surface, the bone at the implant shoulder as well as the oral and vestibular bone lamella. Inter-rater agreement was assessed using ICC.Across all evaluated implants, CT-values in a soft-tissue region of interest adjacent to the implant increased by 11.7 ± 3.9% for CBCT acquisitions, whereas they decreased by 5.3 ± 1.3% for PCCT acquisitions. Similarly, image noise in the respective ROIs is increased by a factor of 63 ± 13% in case of CBCT acquisitions and only by 23 ± 5% in case of PCCT acquisitions. Bone thickness deviations were smaller for PCCT (mean ± SD: 0.06 ± 0.08 mm) than for CBCT (0.39 ± 0.34 mm). Qualitative assessments consistently favored PCCT (p < 0.05) with excellent inter-rater reliability (ICC > 0.75 ) in almost all categories.PCCT enables superior visualization of peri-implant bone structures with fewer artifacts and improved diagnostic accuracy.
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000303446 650_7 $$2Other$$a3D dental imaging
000303446 650_7 $$2Other$$aCBCT
000303446 650_7 $$2Other$$aImage quality
000303446 650_7 $$2Other$$aImplant diagnostics
000303446 650_7 $$2Other$$aMetal artifacts
000303446 650_7 $$2Other$$aPeri-implant bone
000303446 650_7 $$2Other$$aPhoton-counting CT
000303446 650_7 $$2NLM Chemicals$$aDental Implants
000303446 650_2 $$2MeSH$$aAnimals
000303446 650_2 $$2MeSH$$aSwine
000303446 650_2 $$2MeSH$$aCone-Beam Computed Tomography: methods
000303446 650_2 $$2MeSH$$aDental Implants
000303446 650_2 $$2MeSH$$aMandible: diagnostic imaging
000303446 650_2 $$2MeSH$$aMandible: surgery
000303446 650_2 $$2MeSH$$aTomography, X-Ray Computed: methods
000303446 650_2 $$2MeSH$$aPhotons
000303446 7001_ $$aMertens, Christian$$b1
000303446 7001_ $$aGehrig, Holger$$b2
000303446 7001_ $$aSen, Sinan$$b3
000303446 7001_ $$aKim, Ti-Sun$$b4
000303446 7001_ $$0P:(DE-HGF)0$$aSchlemmer, Hans-Peter$$b5
000303446 7001_ $$aSchoenberg, Stefan$$b6
000303446 7001_ $$aFroelich, Matthias$$b7
000303446 7001_ $$0P:(DE-He78)f288a8f92f092ddb41d52b1aeb915323$$aKachelrieß, Marc$$b8$$udkfz
000303446 7001_ $$0P:(DE-He78)14909c75431f33f953a7ab4ad3bd7d51$$aSawall, Stefan$$b9$$eLast author$$udkfz
000303446 773__ $$0PERI:(DE-600)2842869-9$$a10.1186/s40729-025-00640-8$$gVol. 11, no. 1, p. 51$$n1$$p51$$tInternational journal of implant dentistry$$v11$$x2198-4034$$y2025
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