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Mandibular lingual canals distribute to the dental crypts in prenatal stage

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Abstract

Purpose

To describe configurations of human prenatal mandibular, lingual canals using a limited-field cone beam computed tomography (CBCT) to examine their origin and anatomical significance.

Materials and methods

Nine fetal mandibles were examined using a CBCT. Mandibular maturity was assessed according to the mandibular size measured directly and image findings on development of dental crypts. Mandibular, lingual canals and the related foramina (mandibular, mental, and lingual foramina) were observed on axial, sagittal, and cross-sectional images. The horizontal position of mental and lingual foramina was assessed by direct observation using a loupe.

Results

In all nine mandibles, CBCT images depicted three separate mandibular canals, which individually occurred at the ramus area. One was a short canal directly connecting to the permanent molar crypt. The other two showed a parallel course, following the mandibular corpus toward the frontal area; the upper one connected to the mental foramen, and the lower one distributed anterior area of canine and incisor crypts. Lingual foramina were observed bilaterally in eight of nine mandibles, whose horizontal position was lingual against the crypt of deciduous canine. The lingual canals occurred from lingual foramina, and connected to the close deciduous tooth crypt or the mandibular canal distributing in the frontal area.

Conclusions

It was suggested human dentition could be developed by plural mandibular and lingual canals.

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Conflict of interest

None of the authors have any conflicts of interest associated with this study.

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Authors and Affiliations

  1. Department of Oral Anatomy, Tsurumi University School of Dental Medicine, Yokohama, Japan

    Kazunari Shiozaki & Shinji Shimoda

  2. Fukami Dental Clinic, Kochi, Japan

    Kaori Fukami

  3. Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan

    Ami Kuribayashi

  4. Department of Oral and Maxillofacial Radiology Diagnostic Imaging, Tsurumi University School of Dental Medicine, Yokohama, Japan

    Kaoru Kobayashi

Authors
  1. Kazunari Shiozaki
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  2. Kaori Fukami
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  3. Ami Kuribayashi
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  4. Shinji Shimoda
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  5. Kaoru Kobayashi
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Corresponding author

Correspondence to Kaori Fukami.

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Shiozaki, K., Fukami, K., Kuribayashi, A. et al. Mandibular lingual canals distribute to the dental crypts in prenatal stage. Surg Radiol Anat 36, 447–453 (2014). https://doi.org/10.1007/s00276-013-1201-6

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  • DOI: https://doi.org/10.1007/s00276-013-1201-6

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