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Application of telemedicine to assess mandibular cortical width on panoramic images of dental patients in the Lao People’s Democratic Republic

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Abstract

Objectives

Mandibular cortical width (MCW) reference standards for osteoporosis screening have not yet been established in Laos, where panoramic radiography has recently been introduced. The present study was designed to determine the average MCW in Laotian people using panoramic radiography via telemedicine.

Methods

MCW was measured in 519 patients who underwent diagnostic panoramic radiography at a Laos university. Images were transferred to a Japanese university using a telemedicine system. MCW was measured with a computer-aided diagnostic system and was classified by gender, age, and thickness according to OSTEODENT reference standards.

Results

The overall average MCW was 3.70–3.83 mm in men and 3.54 mm in females. The Mann–Whitney U test showed a statistically significant difference (P = 0. 04). MCW increased with age: 2.89 mm at age 0–19 years and 4.25 mm at >60 years. The rate by gender for ≤3 mm cortical thickness of MCW was 34.1 % in men and 48.6 % in females. The average MCW was 3.50 mm in the 20–44 year age group and 3.88 mm in the 45–70 year age group. The connection for teleconferencing and data transmission went smoothly.

Conclusion

This study used panoramic radiography to determine average MCW in Laotian people for the first time. MCW was thicker in males than in females and increased with age. Use of the telemedicine system will contribute to further developments in oral and maxillofacial radiology in Laos.

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Acknowledgments

This work was supported by the Nihon University President Grant Initiative and a grant from the Sato Fund, Nihon University School of Dentistry.

Conflict of interest

Johnny Sisounthone, Ken-ichiro Ejima, Ichiro Nakajima, Kazuya Honda, Shigeharu Hosono, Souksavanh Vongsa, Kunihito Matsumoto, Fumiyuki Kuwata, Hirofumi Aboshi, Bounnhong Sidaphone, Akao Lyvongsa, Sengphouvanh Ngonephady, Aloungnadeth Sitthiphanh, Kichibe Otsuka, Akitoshi Katsumata, and Hiroshi Fujita declare that they have no conflict of interest.

Human rights statements and informed consent

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent was obtained from all patients for being included in the study. Additional informed consent was obtained from all patients for which identifying information is included in this article.

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Authors and Affiliations

  1. Faculty of Dentistry, University of Health Sciences, Vientiane, Lao Pdr

    Johnny Sisounthone, Souksavanh Vongsa, Bounnhong Sidaphone, Akao Lyvongsa, Sengphouvanh Ngonephady & Aloungnadeth Sitthiphanh

  2. Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan

    Ken-ichiro Ejima, Kazuya Honda & Kunihito Matsumoto

  3. Department of Community Dentistry, Nihon University School of Dentistry, Tokyo, Japan

    Ichiro Nakajima

  4. Department of Pediatrics, Nihon University School of Medicine, Tokyo, Japan

    Shigeharu Hosono

  5. Department of Chemistry, Nihon University School of Dentistry, Tokyo, Japan

    Fumiyuki Kuwata

  6. Department of Biochemistry, Nihon University School of Dentistry, Tokyo, Japan

    Kichibe Otsuka

  7. Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan

    Ken-ichiro Ejima, Kazuya Honda & Kunihito Matsumoto

  8. Department of Legal Medicine, Nihon University School of Dentistry, Tokyo, Japan

    Hirofumi Aboshi

  9. Division of Dental Education, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan

    Ichiro Nakajima & Fumiyuki Kuwata

  10. Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan

    Kichibe Otsuka

  11. Department of Oral Radiology, Asahi University School of Dentistry, Gifu, Japan

    Akitoshi Katsumata

  12. Department of Intelligent Image Information, Division of Regeneration and Advanced Medical Sciences, Graduate School of Medicine, Gifu University, Gifu, Japan

    Hiroshi Fujita

Authors
  1. Johnny Sisounthone
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  2. Ken-ichiro Ejima
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  3. Ichiro Nakajima
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  4. Kazuya Honda
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  5. Shigeharu Hosono
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  6. Souksavanh Vongsa
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  7. Kunihito Matsumoto
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  8. Fumiyuki Kuwata
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  9. Hirofumi Aboshi
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  10. Bounnhong Sidaphone
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  11. Akao Lyvongsa
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  12. Sengphouvanh Ngonephady
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  13. Aloungnadeth Sitthiphanh
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  14. Kichibe Otsuka
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  15. Akitoshi Katsumata
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  16. Hiroshi Fujita
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Corresponding author

Correspondence to Ken-ichiro Ejima.

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Sisounthone, J., Ejima, Ki., Nakajima, I. et al. Application of telemedicine to assess mandibular cortical width on panoramic images of dental patients in the Lao People’s Democratic Republic. Oral Radiol 31, 155–159 (2015). https://doi.org/10.1007/s11282-015-0198-4

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  • DOI: https://doi.org/10.1007/s11282-015-0198-4

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