Are the detection and dimensions of peri‐implant buccal bone defects influenced by different implant materials and their location? An experimental cone‐beam computed tomography study

This study explored how well cone-beam computed tomography (CBCT), a 3D dental imaging technique, can detect bone loss around dental implants. The authors tested three commonly used implant materials-titanium (Ti), titanium-zirconium (TiZr), and zirconium dioxide (ZrO₂)-and created small and large buccal bone defects around them in a controlled laboratory setting. They also tested the effect of implants outside the CBCT scanning area to mimic real-world clinical situations. Three trained examiners reviewed 120 CBCT scans to judge whether a bone defect was present, how much the implant material affected image assessment, and how closely their measurements matched the true size of the defects. Overall, CBCT was highly reliable in identifying bone defects, especially when defects were large. However, very small buccal defects were harder to detect, and zirconia implants produced more image distortion, making diagnosis slightly less accurate compared with Ti implants. Importantly, even when implants were positioned at the edge of the scan, CBCT still performed well. These findings support the use of CBCT as a dependable tool for evaluating bone loss around implants, while highlighting situations-such as small defects or zirconia implants-where interpretation should be made with extra care.