Nonsurgical endodontic retreatment of C-shaped maxillary molars: case reports and review of literature

被引:0
|
作者
Liu, Ming [1 ]
Huang, Yanling [1 ]
Wu, Yixuan [1 ,2 ]
Zhang, Yi [1 ]
Zhang, Zhisheng [1 ]
Wu, Qianju [1 ,3 ]
机构
[1] Xiamen Med Coll, Stomatol Hosp, Xiamen Key Lab Stomatol Dis Diag & Treatment, Xiamen, Peoples R China
[2] Xiamen Med Coll, Xiamen, Peoples R China
[3] Xiamen Med Coll, Stomatol Hosp, Dept Prosthodont, Xiamen Key Lab Stomatol Dis Diag & Treatment, Xiamen 361000, Peoples R China
来源
BMC ORAL HEALTH | 2024年 / 24卷 / 01期
关键词
Maxillary molar; C-shaped; Fused root; Enamel pear; Root canal treatment; Supernumerary tooth; WORKING LENGTH MEASUREMENT; ELECTRONIC APEX LOCATOR; PAIN; RADIOGRAPHY; ACCURACY; PULPITIS;
D O I
10.1186/s12903-024-05155-z
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The root canal systems of maxillary first molar (MFM) and maxillary second molar (MSM) variations represent a clinical challenge for endodontists, especially the prevalence of fused C-shaped roots. Having a thorough knowledge of root canal configuration is an extremely important point for a successful root canal treatment to avoid missing extra canals. The aim of this article was to present 2 cases of maxillary molar with an unusual C-shaped configuration diagnosed during root canal retreatment/treatment and conduct a literature review of the MFM and MSM anatomy. Case 1 reports that three separate palatal root canals fused into a C-shaped configuration in the MFM, which with an enamel pearl in the furcation, was classified as Type D and first reported in MFM. Case 2 reflects the fusion of all three buccal canals of the MSM into a C-shaped configuration that finally formed an apical foramen with a supernumerary tooth, and the configuration was Type B. Evaluation at an 18-month and a 9-month recall revealed that two patients were symptom-free after the conduct of a non-surgical retreatment/treatment, and the X-ray revealed normal periapical tissue. In addition, the thickness of the Schneiderian membrane due to odontogenic maxillary sinusitis returns to normal after an effective retreatment in case 1. These reports serve to remind endodontists of the importance and complexity of anatomical variations, which should always be considered when formulating an effective root canal treatment plan. The combined use of cone-beam computerized tomography (CBCT) and a dental operating microscope (DOM) will be profitable to locate and identify extra canals when a periapical radiograph shows signs of an unusual canal morphology.
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页数:8
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