使用术前锥形束计算机断层扫描对上颌第一磨牙腭侧双根管进行根管再治疗：一例报告
Endodontic Retreatment of an Upper First Molar with Bifurcated Palatal Canal Using Preoperative Cone-beam Computed Tomography: A Case Report.
作者信息
Chau Nguyen Thi, Ngoc Vo Truong Nhu, Duc Vu Viet, Hanh Truong Thi Hieu, Dinh Thien Chu
机构信息
School of Odonto Stomatology, Hanoi Medical University, Hanoi, Vietnam.
Institute for Research and Development, Duy Tan University, 03 Quang Trung, Danang, Vietnam.
出版信息
Open Access Maced J Med Sci. 2019 Dec 20;7(24):4337-4341. doi: 10.3889/oamjms.2019.387. eCollection 2019 Dec 30.
BACKGROUND
Anatomic variations in palatal canal morphology in maxillary first molars (MFMs) are relatively rare occurrences. Therefore, omission is common unless clinicians recognize their presence.
CASE REPORT
The aim of this report is to point out new signs that can be viewed as indicators of the existence of additional canals in the palatal root (PR) in this upper first molar endodontic retreatment case. Moreover, the role of preoperative cone-beam computed tomography (CBCT) in both discovering and determining the location of those additional canals will also be discussed.
CONCLUSION
Besides formerly discussed signs that indicate the existence of this canal, clinicians should also pay attention to other signals on periapical radiograph, including the aberrant divergence of a palatal canal at apical third and an unusual lesion occurring laterally in the periapical area of palatal root.
背景
上颌第一磨牙（MFMs）腭侧根管形态的解剖变异相对少见。因此，除非临床医生认识到它们的存在，否则遗漏情况很常见。
病例报告
本报告的目的是指出在这例上颌第一磨牙根管再治疗病例中可被视为腭根（PR）存在额外根管指标的新体征。此外，还将讨论术前锥形束计算机断层扫描（CBCT）在发现和确定这些额外根管位置方面的作用。
结论
除了先前讨论过的表明该根管存在的体征外，临床医生还应注意根尖片上的其他征象，包括腭侧根管在根尖三分之一处的异常分歧以及腭根根尖区外侧出现的异常病变。
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