Association between CT image findings and hypoesthesia in the mental region and lower lip after dentigerous cyst removal: a retrospective study and literature review.

Shinichiro Yamada, Hizuru Osanai, Kozue Mori, Noriyuki Sugino, Akira Taguchi

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Review in Oral radiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Shinichiro YamadaDepartment of Oral and Maxillofacial Radiology, School of Dentistry, Matsumoto Dental University, 1780, Gobara Hirooka Shiojiri, Nagano, 399-0781, Japan. shinichiro.yamada@mdu.ac.jp.ORCID 0009-0002-2535-6022

Hizuru OsanaiDepartment of Oral and Maxillofacial Radiology, School of Dentistry, Matsumoto Dental University, 1780, Gobara Hirooka Shiojiri, Nagano, 399-0781, Japan.

Kozue MoriDepartment of Oral and Maxillofacial Radiology, School of Dentistry, Matsumoto Dental University, 1780, Gobara Hirooka Shiojiri, Nagano, 399-0781, Japan.

Noriyuki SuginoDepartment of Oral and Maxillofacial Radiology, School of Dentistry, Matsumoto Dental University, 1780, Gobara Hirooka Shiojiri, Nagano, 399-0781, Japan.

Akira TaguchiDepartment of Oral and Maxillofacial Radiology, School of Dentistry, Matsumoto Dental University, 1780, Gobara Hirooka Shiojiri, Nagano, 399-0781, Japan.

Funding

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6 · The paper itself

Abstract

objectivesTo evaluate the role of computed tomography (CT)/cone-beam computed beam CT (CBCT) in association with hypoesthesia of the mental region and lower lip during the surgical removal of DCs.

methodsA retrospective cohort study was performed involving 39 impacted mandibular DC cases between February 2011 and March 2022. We studied the association of hypoesthesia in relation to the age and sex of the patient and to growth direction and expansion of the DC on the CT/CBCT image findings. The preoperative CT/CBCT image findings were statistically analyzed in accordance with diagnoses of DCs confirmed based on pathology. Fisher's exact test was used to test the relationship between hypoesthesia and CT/CBCT imaging findings. In addition, PubMed and PubMed Central were searched using keywords such as "hypoesthesia" to find relevant studies. Reports of hypoesthesia of the mental region and lower lip were derived from the selected literature.

resultsThe frequency of hypoesthesia recorded was 35.9%. No statistically significant association was observed for all hypoesthesia and CT/CBCT image findings.

conclusionsImaging evaluation was performed in 39 dentigerous cysts, and a literature review was performed. We found that CT/CBCT alone does not provide sufficiently reliable images required for predicting nerve lesions. Future prospective studies are required.

Indexed as

Cone-Beam Computed TomographyDentigerous CystHypesthesiaLipPostoperative ComplicationsTomography, X-Ray ComputedAdolescentAdultChildFemaleHumansMaleMiddle AgedRetrospective StudiesComputed tomographyDentigerous cystHypoesthesiaInferior alveolar nerve

Identifiers

PMID40042789

DOI10.1007/s11282-025-00813-6

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