J Endod:检测不同预备技术导致的牙本质微裂隙:一项尸体下颌骨的原位研究

2017-10-06 lishiting MedSci原创

这篇研究的目的是在一个尸体下颌骨模型中评估几种不同的根管预备器械引起的牙本质微裂隙发生频率,包括:TRUShape (TS; Dentsply Sirona, York, PA), WaveOne Gold (WO, Dentsply Sirona)或K-files (KF),并与未预备根管相比较(CG)。

这篇研究的目的是在一个尸体下颌骨模型中评估几种不同的根管预备器械引起的牙本质微裂隙发生频率,包括:TRUShape (TS; Dentsply Sirona, York, PA), WaveOne Gold (WO, Dentsply Sirona)或K-files (KF),并与未预备根管相比较(CG)。

15个人的下颌骨,共95颗单根管牙齿随机分配至以下几组:CG (未预备, n = 11), TS (n = 28), WO (n = 28)以及KF (使用K-Flex-o-files逐步后退法预备[Dentsply Sirona], n = 28)。牙齿根尖预备至#25/.06或#25/.07;移除覆盖阻挡的骨组织,随后将牙齿拔出牙槽窝,使用低速电锯在距离根尖3, 6和9 mm的位置片切牙齿。牙齿切片放大20和25倍进行观察。由3名独立且彼此不知的鉴定者对结果影像进行分析,评估牙本质微裂隙的发生以及裂隙的范围、方向和位置。采用chi-square检验对结果进行显著性分析(P < .05)。

来自于4组83颗牙齿最后样本的结果显示,CG, TS, WO和KF所发现的牙本质微裂隙个数分别为33个中的10个, 66个中的13个, 69个中的16个以及81个中的21个样本。在CG和所有预备器械TS, WO或KF之间又或在它们不同水平切片间的比较中(距根尖3 mm [P = .9], 6 mm [P = .18]或9 mm [P = .69]),微裂隙的发生率均未见明显差异。另外,在所有组中微裂隙的范围、方向和位置也不存在显著性差异(P > .05)。

结论:在实验组应用不同预备器械TS, WO和KF之间或者与不进行预备的对照组相比较中,其微裂隙的发生率均无明显差异。

原始出处

Bahrami P, Scott R, et al. Detecting Dentinal Microcracks Using Different Preparation Techniques: An In Situ Study with Cadaver Mandibles. J Endod. 2017 Sep 28. pii: S0099-2399(17)30860-9. doi: 10.1016/j.joen.2017.07.008.

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    2018-08-20 xlysu
  2. [GetPortalCommentsPageByObjectIdResponse(id=1699690, encodeId=0e3316996901f, content=<a href='/topic/show?id=dd152024130' target=_blank style='color:#2F92EE;'>#下颌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20241, encryptionId=dd152024130, topicName=下颌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1c4f29973299, createdName=xlysu, createdTime=Mon Aug 20 18:40:00 CST 2018, time=2018-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253456, encodeId=d37e2534560d, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKcmgibQ4oCrK7Z6f4CvMcs4k7QUGCkhopcGxvxaBfVciadECSIwaRVttllIOEKumpEaRrq5PoOUxow/0, createdBy=e3bb2081203, createdName=哈哈869, createdTime=Mon Oct 16 17:05:39 CST 2017, time=2017-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1419627, encodeId=8871141962eb6, content=<a href='/topic/show?id=e2dc2025888' target=_blank style='color:#2F92EE;'>#下颌骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20258, encryptionId=e2dc2025888, topicName=下颌骨)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d9f63514434, createdName=珙桐, createdTime=Sun Oct 08 08:40:00 CST 2017, time=2017-10-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1441876, encodeId=9f4e14418e61d, content=<a href='/topic/show?id=67526e55924' target=_blank style='color:#2F92EE;'>#牙本质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67559, encryptionId=67526e55924, topicName=牙本质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37364903098, createdName=ms8538335253054589, createdTime=Sun Oct 08 08:40:00 CST 2017, time=2017-10-08, status=1, ipAttribution=)]
    2017-10-16 哈哈869

    学习了

    0

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    2017-10-08 珙桐
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