J Endod:根尖至下颌管的距离和骨密度的研究:一项对9202个牙根的CBCT分析

2019-04-25 lishiting MedSci原创

下颌后牙牙髓治疗过程中对下牙槽神经的意外损伤需要格外关注。因此,对根尖与下颌管(MC)之间的关系进行谨慎的评估对于预防医源性并发症是十分必要的。这篇研究的目的是为了评估下颌后牙根尖至MC的距离以及这段区域之间的骨密度。

下颌后牙牙髓治疗过程中对下牙槽神经的意外损伤需要格外关注。因此,对根尖与下颌管(MC)之间的关系进行谨慎的评估对于预防医源性并发症是十分必要的。这篇研究的目的是为了评估下颌后牙根尖至MC的距离以及这段区域之间的骨密度。研究回顾性的从一家私人口腔放射临床数据库中随机选取1000例CBCT扫描结果。影像采用限制性视野采集,并由2名评估者通过Dental Slice software (Bioparts Biomedical Prototyping, Brasília, DF, Brazil)分析检测根尖距离MC上骨皮质的最短距离。此外,通过"profile line of Hounsfield"工具检测骨密度,并用Hounsfield单位表示。结果显示,右下第二磨牙的远中根与MC的距离最近MC (mean = 3.41 mm),右下第一前磨牙与MC之间的距离最远MC (mean = 5.87 mm)。女性根尖与MC之间的距离小于男性(P < .05)。1.79%的病例中,根尖与MC相联系或侵犯MC,而8.35%的根尖与MC接近(<1.00 mm),89.85%与MC相隔较远(&

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    2019-05-19 xlysu
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    2019-04-27 智慧医人
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