Artifacts of Titanium, Zirconium and binary Titanium-Zirconium abutments in CT, CBCT, MRI

Aim: The aim of this in vitro study was to evaluate imaging artifacts induced by Titanium, Zirconium, Titanium-Zirconium abutments in CT, MRI and CBCT imaging modalities.Methods: A 4 ×8mm titanium fixture was inserted in a dry human mandible. Titanium, Zirconium and Titanium–Zirconium abutments measuring 10.5 mm in height are located on the fixture, one by one. Each abutment was scanned 4 times by each imaging modality. Gray value of the images was evaluated in four determine d regions adjacent to distal, mesial, buccal and lingual aspects of the implant as the region of interest (ROI) by two observers using image J software. Gray value differences (∆GV) between the control (fixture without abutment) and case images (fixture and each type of abutments) were calculated. Data evaluation was done by analysis of variance and Post Hoc tests.Results: In CBCT, ∆GV was significantly higher in zirconium-titanium images comparing with titanium abutments. (P Value

Source: Journal of Dental Materials and Techniques - January 18, 2020 Category: Dentistry Source Type: research