2017
DOI: 10.1016/j.joen.2017.04.006
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Variations of Palatal Canal Morphology in Maxillary Molars: A Case Series and Literature Review

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Cited by 16 publications
(14 citation statements)
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“…Earlier studies provided two clues about the bifurcation of the palatal canal on periapical radiograph: 1) the unusual diverging gutta-percha on the master cone radiograph or the weird divergence of a master apical hand-file on the working-length film [10], 2) the abnormal divergence of root canal filling material which was obturated previously in palatal canal [10]. In this case, the upper first molar undergoing incomplete endodontic treatment with underfilled obturating material in the palatal canal posed an obstacle to discovering the canal morphology.…”
Section: Discussionmentioning
confidence: 99%
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“…Earlier studies provided two clues about the bifurcation of the palatal canal on periapical radiograph: 1) the unusual diverging gutta-percha on the master cone radiograph or the weird divergence of a master apical hand-file on the working-length film [10], 2) the abnormal divergence of root canal filling material which was obturated previously in palatal canal [10]. In this case, the upper first molar undergoing incomplete endodontic treatment with underfilled obturating material in the palatal canal posed an obstacle to discovering the canal morphology.…”
Section: Discussionmentioning
confidence: 99%
“…Once there are signs of the bifurcated palatal canal, clinicians need to re-examine and determine its presence with certainty. On the one hand, according to earlier reports on the case, the canal was only detected after instrumentation with the support of a microscope [6], [10]. More seriously, clinical dentists made a mistake when assuming the palatal root had one canal and one foramen (1-1 anatomy) on the initial periapical film, resulting in failure in the first treatment [10].…”
Section: Discussionmentioning
confidence: 99%
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“…The second molars of the upper jaw have the most intricate root canal system in human teeth [ 10 , 11 ]. The rate of occurrence of a secondary mesiobuccal canal (MB2) in permanent second molars of the upper jaw have been reported to be as high as 93.7% [ 12 ], and the likelihood of having two palatal canals was found to range from 1.37% to 6.34% [ 13 , 14 ].…”
Section: Introductionmentioning
confidence: 99%
“…Indeed, many studies have described morphologic variations in maxillary molars, with multiple canals in each root, especially bi-or tri-furcated palatal canals [7][8][9][10][11]. Unusual anatomy in maxillary second molars is often difficult to diagnose because of its posterior location [12]. The superimposition of anatomical structures on conventional radiographs of this tooth may fail to reveal a bifurcated palatal root canal or other anatomical variations, such as single or double roots and fused roots [13,14].…”
Section: Introductionmentioning
confidence: 99%