@article{LI2019, 
author = {Hong LI and Bingchang XIN and Qi TENG},
title = {A case of maxillary second premolar with 3 teeth and 4 root canals and a literature review},
year = {2019},
journal = {Journal of Prevention and Treatment for Stomatological Diseases},
volume = {27},
number = {2},
pages = {107-109},
keywords = {Maxillary second premolar, Root canal, Root canal morphology, Root canal treatment, Cone beam CT, Operating microscope},
url = {https://www.sciopen.com/article/10.12016/j.issn.2096-1456.2019.02.008},
doi = {10.12016/j.issn.2096-1456.2019.02.008},
abstract = {ObjectiveTo explore the discovery and treatment of multiple root canals in the maxillary second premolar to provide a reference for root canal therapy.MethodsA case of maxillary second premolar occlusal discomfort accompanied by cold and heat stimulation pain and spontaneous pain was analyzed retrospectively.ResultsIn this case, the number of roots and root canals in the tooth was determined by CBCT to be three roots with four canals. Root canal therapy was performed with Ni-Ti endodontic files and thermoplastic gutta-percha via root optical microscopy. The clinical symptoms disappeared after the operation.ConclusionThe maxillary second premolar root canal system is complex, and additional root canals can be found and located with CBCT and optical microscopy. High-quality root canal therapy was completed.}
}