Publication: Non-endodontic periapical lesions clinically diagnosed as endodontic periapical lesions: A retrospective study over 15 years
Issued Date
2021-06-01
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19895488
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2-s2.0-85108166684
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Clinical and Experimental Dentistry. Vol.13, No.6 (2021), 586-593
Suggested Citation
Theerachai Kosanwat, Sopee Poomsawat, Jira Kitisubkanchana Non-endodontic periapical lesions clinically diagnosed as endodontic periapical lesions: A retrospective study over 15 years. Journal of Clinical and Experimental Dentistry. Vol.13, No.6 (2021), 586-593. doi:10.4317/jced.57957 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/76797
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Title
Non-endodontic periapical lesions clinically diagnosed as endodontic periapical lesions: A retrospective study over 15 years
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Abstract
Background: This study aimed to provide the frequency and demographic data of non-endodontic periapical lesions clinically misdiagnosed as endodontic periapical lesions from a Southeast Asian population over a 15-year period. Material and Methods: A retrospective study was conducted from departmental archives between 2005 and 2019. Cases clinically diagnosed as endodontic periapical lesions were retrieved. Then, cases with a histopathological diagnosis of non-endodontic periapical lesion were selected. Demographic data of non-endodontic periapical lesions were recorded. Radiographic features of cases with available radiographs were analyzed. Results: Of 1,566 cases clinically diagnosed as endodontic periapical lesion, 157 cases received a histopathological diagnosis of non-endodontic origin. Eighteen different histopathological diagnoses were identified. The most frequent lesion was dentigerous cyst (n= 51, 32.48%) followed by odontogenic keratocyst (n=31, 19.75%), nasopalatine duct cyst (n=18, 11.46%) and ameloblastoma (n=15, 9.56%). Three cases of malignant tumors, including adenoid cystic carcinoma, mucoepidermoid carcinoma, and metastatic papillary thyroid carcinoma were observed. Conclusions: Non-endodontic periapical lesions constituted 10.03% of cases clinically diagnosed as endodontic periapical lesions. Histopathological examinations of non-endodontic periapical lesions revealed a variety of lesions ranging from foreign body reaction, cysts, fibro-osseous lesions, benign tumors and primary or metastatic malignant tumors. Of clinical significance is that some non-endodontic periapical lesions had different treatment modalities and prognoses compared with endodontic lesions. Therefore, dentists must be aware that periapical radiolucent lesions are not always a consequence of pulpal necrosis.