N Sharba, A Buch, D-M Beek, S E Nørholt, T Xi, K Stokbro
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引用次数: 0
摘要
这项研究的目的是利用锥形束计算机断层扫描(CBCT)评估接受节段性 Le Fort I(LFI)截骨术治疗的患者在垂直截骨处的牙齿和牙周损伤以及放射学骨愈合情况。这项回顾性研究分析了 105 位接受节段性 LFI 截骨术的患者。使用锉刀和截骨器在侧切牙和犬齿之间进行垂直截骨。术前、1周和1年随访时进行CBCT扫描。1周时的测量包括牙间距离、牙根损伤和牙周脱离,1年后的随访则评估牙髓治疗和截骨愈合情况。结果显示,420 个有风险的牙根没有损伤,但有 38 个牙根的截骨延伸到了牙周韧带。在牙周韧带完好和牙周韧带脱落的部位,术前牙根之间的平均最小距离有显著差异(P
Safety of vertical osteotomies in segmental Le Fort I procedures: a one-year radiological follow-up study.
The aim of this study was to evaluate dental and periodontal injuries and radiological bone healing at vertical osteotomies in patients treated with segmental Le Fort I (LFI) osteotomy, using cone beam computed tomography (CBCT) scans. This retrospective study analyzed 105 patients who underwent segmental LFI osteotomy. Vertical osteotomies were performed between the lateral incisor and canine using a bur and osteotome. CBCT scans were taken preoperatively and at 1-week and 1-year follow-ups. Measurements at 1-week included interdental distances, root injuries, and periodontal detachment, while 1-year follow-up assessed endodontic treatment and osteotomy healing. Results showed no damage to the 420 roots at risk, though 38 roots had osteotomy extensions into the periodontal ligament. The mean preoperative minimum distance between roots was significantly different between sites with intact and detached periodontal ligaments (P < 0.001). One tooth required endodontic treatment at 1-year follow-up. Incomplete healing of vertical osteotomies was more frequent in female patients (P = 0.012). The findings suggest that segmental LFI osteotomy is safe when performed with a bur and osteotome, provided a minimum distance of 2.5 mm between roots is maintained.