J Endod:通过锥束CT、直接开髓探查以及冠状平面研磨评估上颌**磨牙MB2的流行趋势

2017-08-01 MedSci MedSci原创

这篇研究的目的是通过3种不同方法和1种联合方法检测100颗上颌第一磨牙第二近颊根(MB2)发生的流行趋势。

这篇研究的目的是通过3种不同方法和1种联合方法检测100颗上颌第一磨牙第二近颊根(MB2)发生的流行趋势。

研究选取100颗拔除的上颌第一磨牙。牙齿包埋在一具人尸体头颅的上颌第一磨牙拔除窝中。锥束CT(CBCT)扫描观察每一颗牙齿。由2个独立的放射线部门对CBCT结果进行评估以观察确定MB2的存在与否。除此之外,牙齿预备开髓。如果无法找到根管,观察术前CBCT扫描结果后再一次尝试定位MB2。最后,近中根呈冠状面打磨分割。

结果显示,通过CBCT扫描观察分析,发现MB2的发生率为69%。由牙齿开髓探测发现的MB2发生率为78%。开髓探查结合CBCT扫描观察后的MB2发生率则上升至87%。牙根的冠状面磨切观察到MB2的发生率为92%。各个方法之间均存在显著性差异。

结论:这项研究表明,MB2的存在率可高达92%。直接开髓探查与单独应用CBCT扫描观察相比,可以显著提高对MB2的发现率(P = .032)。因此,每名患者都进行术前CBCT扫描不一定合适。然而,当临床无法探查到MB2时再进行CBCT扫描观察,则可以显著增加发现MB2的几率(P < .001)。

原始出处

Hiebert BM, Abramovitch K, et al. Prevalence of Second Mesiobuccal Canals in Maxillary First Molars Detected Using Cone-beam Computed Tomography, Direct Occlusal Access, and Coronal Plane Grinding. J Endod. 2017 Jul 20. pii: S0099-2399(17)30664-7. doi: 10.1016/j.joen.2017.05.011.

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    2018-05-12 Boyinsh
  2. [GetPortalCommentsPageByObjectIdResponse(id=1690735, encodeId=36271690e3583, content=<a href='/topic/show?id=cbb611345cf' target=_blank style='color:#2F92EE;'>#MB2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11345, encryptionId=cbb611345cf, topicName=MB2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5ff729108659, createdName=Boyinsh, createdTime=Sat May 12 10:51:00 CST 2018, time=2018-05-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1576135, encodeId=126f15e61350a, content=<a href='/topic/show?id=05a7e3816d7' target=_blank style='color:#2F92EE;'>#磨牙#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73816, encryptionId=05a7e3816d7, topicName=磨牙)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Thu Aug 03 10:51:00 CST 2017, time=2017-08-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1631116, encodeId=7ff11631116e2, content=<a href='/topic/show?id=271b20090b0' target=_blank style='color:#2F92EE;'>#上颌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20090, encryptionId=271b20090b0, topicName=上颌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c07f21689347, createdName=hanhaisha2015, createdTime=Thu Aug 03 10:51:00 CST 2017, time=2017-08-03, status=1, ipAttribution=)]
    2017-08-03 zhaojie88
  3. [GetPortalCommentsPageByObjectIdResponse(id=1690735, encodeId=36271690e3583, content=<a href='/topic/show?id=cbb611345cf' target=_blank style='color:#2F92EE;'>#MB2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11345, encryptionId=cbb611345cf, topicName=MB2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5ff729108659, createdName=Boyinsh, createdTime=Sat May 12 10:51:00 CST 2018, time=2018-05-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1576135, encodeId=126f15e61350a, content=<a href='/topic/show?id=05a7e3816d7' target=_blank style='color:#2F92EE;'>#磨牙#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73816, encryptionId=05a7e3816d7, topicName=磨牙)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Thu Aug 03 10:51:00 CST 2017, time=2017-08-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1631116, encodeId=7ff11631116e2, content=<a href='/topic/show?id=271b20090b0' target=_blank style='color:#2F92EE;'>#上颌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20090, encryptionId=271b20090b0, topicName=上颌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c07f21689347, createdName=hanhaisha2015, createdTime=Thu Aug 03 10:51:00 CST 2017, time=2017-08-03, status=1, ipAttribution=)]

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