J Endod:根管预备不会体内造成牙本质微裂缝

2019-08-23 lishiting MedSci原创

这篇体内研究的目的是通过micro-CT检验并评估机用或手用器械对前磨牙进行根管预备后的牙本质微裂隙情况。

这篇体内研究的目的是通过micro-CT检验并评估机用或手用器械对前磨牙进行根管预备后的牙本质微裂隙情况。

研究选取60颗因正畸准备拔除的完整一侧上下颌前磨牙,将其分为阳性(n = 6, 牙齿诱导成根裂)和阴性(n = 6, 完整牙齿)对照组以及按照根管预备方案的不同分为2个实验组(n = 24):ProTaper rotary (PTR)或ProTaper hand (PTH)系统(Dentsply Maillefer, Ballaigues, Switzerland)。根管预备后,采用无创技术拔除牙齿,并以17.18 μm的分别率进行扫描观察。为了检测是否存在牙本质微裂隙,共获得43,361层牙根的横断面影像。结果以每组牙根牙本质微裂隙横断面影像的数量和百分比进行记录。

结果显示,所有阳性对照组中的牙根在根尖1/3处均存在微裂隙,而阴性对照组中的样本未观察到任何裂痕。在PTR组中,共分析了17,114层横断面影像,未发现任何微裂隙。在PTH组中,仅在1个样本中的17,408个横断面影像中发现了116个牙本质微裂隙(0.66%)。这些不完整的微裂隙是从牙本质厚度减少区域的外部牙根表面扩展至内部牙本质。

结论:使用PTR和PTH器械体内对一侧上下颌前磨牙进行根管预备并不会造成牙本质微裂隙的形成。

原始出处:

PradeepKumar AR, Shemesh H, et al. Root Canal Preparation Does Not Induce Dentinal Microcracks In Vivo. J Endod. 2019 Aug 14. pii: S0099-2399(19)30499-6. doi: 10.1016/j.joen.2019.06.010.

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    2019-08-23 德里克王

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1391692, encodeId=61041391692b6, content=<a href='/topic/show?id=5615622e569' target=_blank style='color:#2F92EE;'>#根管预备#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62275, encryptionId=5615622e569, topicName=根管预备)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5bf2500092, createdName=124988c7m95暂无昵称, createdTime=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1441958, encodeId=33801441958a9, 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=32, 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=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1522977, encodeId=31bb15229e7ec, content=<a href='/topic/show?id=c72462241ff' target=_blank style='color:#2F92EE;'>#根管#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62241, encryptionId=c72462241ff, topicName=根管)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ba5e11492705, createdName=zhaozhouchifen, createdTime=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371693, encodeId=ad9a3e1693d9, content=嗯, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/62OcmoROoeBn6Sf1NfTfUreQUklw8XvMSrPa042C32kXPJmavCct2Ghqa2X1Wc5P1q494RKicWRyJTJhZFM9rHA/132, createdBy=d1542553914, createdName=德里克王, createdTime=Fri Aug 23 09:34:55 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371686, encodeId=25463e16862f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/07/01/577acf4668c2eb760152040cdd4c4196.jpg, createdBy=dc3f5107879, createdName=最帅小男护, createdTime=Fri Aug 23 07:16:42 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371683, encodeId=bf3b3e168330, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Fri Aug 23 06:32:17 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371678, encodeId=b1523e167807, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Aug 23 03:17:20 CST 2019, time=2019-08-23, status=1, ipAttribution=)]
    2019-08-23 最帅小男护

    学习了

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1391692, encodeId=61041391692b6, content=<a href='/topic/show?id=5615622e569' target=_blank style='color:#2F92EE;'>#根管预备#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62275, encryptionId=5615622e569, topicName=根管预备)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5bf2500092, createdName=124988c7m95暂无昵称, createdTime=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1441958, encodeId=33801441958a9, 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=32, 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=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1522977, encodeId=31bb15229e7ec, content=<a href='/topic/show?id=c72462241ff' target=_blank style='color:#2F92EE;'>#根管#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62241, encryptionId=c72462241ff, topicName=根管)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ba5e11492705, createdName=zhaozhouchifen, createdTime=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371693, encodeId=ad9a3e1693d9, content=嗯, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/62OcmoROoeBn6Sf1NfTfUreQUklw8XvMSrPa042C32kXPJmavCct2Ghqa2X1Wc5P1q494RKicWRyJTJhZFM9rHA/132, createdBy=d1542553914, createdName=德里克王, createdTime=Fri Aug 23 09:34:55 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371686, encodeId=25463e16862f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/07/01/577acf4668c2eb760152040cdd4c4196.jpg, createdBy=dc3f5107879, createdName=最帅小男护, createdTime=Fri Aug 23 07:16:42 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371683, encodeId=bf3b3e168330, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Fri Aug 23 06:32:17 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371678, encodeId=b1523e167807, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Aug 23 03:17:20 CST 2019, time=2019-08-23, status=1, ipAttribution=)]
    2019-08-23 1209e435m98(暂无昵称)

    学习了,谢谢分享

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1391692, encodeId=61041391692b6, content=<a href='/topic/show?id=5615622e569' target=_blank style='color:#2F92EE;'>#根管预备#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62275, encryptionId=5615622e569, topicName=根管预备)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c5bf2500092, createdName=124988c7m95暂无昵称, createdTime=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1441958, encodeId=33801441958a9, 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=32, 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=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1522977, encodeId=31bb15229e7ec, content=<a href='/topic/show?id=c72462241ff' target=_blank style='color:#2F92EE;'>#根管#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62241, encryptionId=c72462241ff, topicName=根管)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ba5e11492705, createdName=zhaozhouchifen, createdTime=Sat Aug 24 15:47:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371693, encodeId=ad9a3e1693d9, content=嗯, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/62OcmoROoeBn6Sf1NfTfUreQUklw8XvMSrPa042C32kXPJmavCct2Ghqa2X1Wc5P1q494RKicWRyJTJhZFM9rHA/132, createdBy=d1542553914, createdName=德里克王, createdTime=Fri Aug 23 09:34:55 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371686, encodeId=25463e16862f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/07/01/577acf4668c2eb760152040cdd4c4196.jpg, createdBy=dc3f5107879, createdName=最帅小男护, createdTime=Fri Aug 23 07:16:42 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371683, encodeId=bf3b3e168330, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Fri Aug 23 06:32:17 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371678, encodeId=b1523e167807, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Aug 23 03:17:20 CST 2019, time=2019-08-23, status=1, ipAttribution=)]
    2019-08-23 飛歌

    学习了很有用

    0

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