Close-meshed MRIs follow-ups for dynamic healing evaluation after tooth extraction: A conceptual case study

Purpose To apply a close-meshed magnetic resonance imaging (MRI) protocol for socket healing – with or without alveolar ridge preservation - and discuss the advantages and disadvantages as compared to computed tomography (CT). Methods A molar (tooth 36) was atraumatically extracted and the mesial socket was filled with a xenograft, while the distal was left for spontaneous healing; the socket orifice was covered with a collagen membrane. MRIs were taken preoperatively (t0) and 1 (t1), 2 (t2), 4 (t3), 8 (t4), and 16 (t5) weeks after tooth extraction, respectively. At t0 and t5, the patient received CT scans for comparison. MRI and CT images were used for the analysis and comparison of extraction socket healing at different time points. Image data were processed with 3D segmentation software. Results Socket healing was uneventful and could be tracked within MRI. Bone volume (cm ³ ) constantly reduced from 4.83 (t0) to 4.15 (t16) for MRI over time. Conclusions MRI has been proven to be suitable for imaging in different dental applications. Using this radiation-free technology might allow a more stringent and frequent follow-up in practice and, especially, in clinical trials. Technique-inherent limitations need to be considered.