下颌**磨牙重度弯曲细小根管1例

2017-11-09 佚名 牙体牙髓牙周病学杂志

患者男,6岁,因左侧下颌后牙咀嚼痛10d来我院就诊。

【一般资料】

患者男,6岁

【主诉】

因左侧下颌后牙咀嚼痛10d来我院就诊。

【现病史】

年前左下后牙因龋损于外院行“充填治疗”10d前出现自发性持续性痛,咀嚼时疼痛加重。

【体格检查】

36牙合面见白色充填物,边缘不密合,周围见大量腐质,探痛(-),冷水反应(-),叩痛(+),无松动,牙龈无充血水肿。

【辅助检查】

X线片可见36近中根牙周膜间隙增宽,远中根严重弯曲,有0.3cm×0.2cm椭圆形低密度区,边界不清。

【初步诊断

36慢性尖周炎。

【治疗】

6根管治疗术后行全冠修复。36置橡皮障,常规开髓、揭髓顶,超声工作尖(ETBD)去除牙本质领,探及5个根管口,10C锉疏通MB、ML、DB根管,#8C锉疏通DL和MM根管,测量工作长度(MB:20mm,ML:23.5mm,MM:22.5mm,DB:21.5mm,DL:22.5mm),PathFile初预备根尖至#19,MB、ML、DB根管ProTaper预备至F2,DL、MM根管Mtwo预备至#25。预备后,发现MM与MB融合为1个根管(2-1型)。52.5g/LNaCLO+30mL/LH2O2交替冲洗,超声荡洗,封Ca(OH)糊剂。1周后复诊,自觉症状消失,无渗出,主尖拍片(牙胶尖预弯处理)并按照Schneider法测量弯曲度,用AH-Plus糊剂热牙胶连续波充填。X线片示36根管恰填。术后3个月复查,远中根根尖周围骨密度较术前增高,根尖周病变正在愈合。1年半后复查,尖周病变基本消失,行全冠修复。


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    2018-07-09 xlysu
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