Fuglsig João M C E S, Sampaio-Oliveira Matheus, Spin-Neto Rubens
Section for Oral Radiology and Endodontics, Department of Dentistry and Oral Health, Aarhus University, Vennelyst Boulevard 9, 8000, Århus, Denmark.
Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, SP, 13414-903, Brazil.
Oral Radiol. 2025 Apr;41(2):296-301. doi: 10.1007/s11282-024-00787-x. Epub 2024 Nov 26.
The objective is to present a dental-dedicated magnetic resonance imaging (ddMRI)-based follow-up of inferior third molar removal over 12 months. A 30-year-old female presented with recurrent pain and bleeding from her lower right third molar. With adding diagnostic information from a panoramic image, the tooth was referred for removal. The patient underwent ddMRI using a dental coil with a proton density (PD) weighed turbo spin echo (TSE) sequence and a PD-TSE-STIR with fat suppression to highlight possible inflammatory processes. The scans were performed pre-operatively, immediately post-operatively, and in a rigorous follow-up (weekly basis for the first 6 weeks, bi-weekly from 7 to 12 weeks, and once at 6 and 12 months post-operatively). Using ImageJ software, circular ROIs were selected in the extraction alveolus coronary, middle, and apical regions. Mean grey values (MGVs) and standard deviation (SD) were obtained. A trend of decreasing MGVs in the PD (TSE) pulse sequence was observed over time, irrespective of the root third. Considering the PD-STIR (TSE), no trend was observed. ddMRI is feasible in the follow-up assessment of inferior third molar removal. Further clinical trials with larger samples are needed to define the usability of follow-up with ddMRI, considering a potential added diagnostic value.
目的是展示基于牙科专用磁共振成像（ddMRI）对下颌第三磨牙拔除术后12个月的随访情况。一名30岁女性右下第三磨牙反复疼痛且出血。结合全景图像的诊断信息，该牙齿被转诊拔除。患者使用牙科线圈，采用质子密度（PD）加权快速自旋回波（TSE）序列和具有脂肪抑制功能的PD-TSE-STIR序列进行ddMRI检查，以突出可能的炎症过程。扫描分别在术前、术后即刻以及严格的随访过程中进行（前6周每周一次，7至12周每两周一次，术后6个月和12个月各一次）。使用ImageJ软件，在拔牙窝的冠状、中间和根尖区域选择圆形感兴趣区（ROI）。获取平均灰度值（MGV）和标准差（SD）。无论牙根情况如何，在PD（TSE）脉冲序列中，随着时间推移观察到MGV有下降趋势。对于PD-STIR（TSE）序列，未观察到趋势。ddMRI在下颌第三磨牙拔除术后的随访评估中是可行的。考虑到潜在的额外诊断价值，需要进行更大样本量的进一步临床试验来确定ddMRI随访的实用性。
