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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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.
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.
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.
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.
KeywordsMandibular cortical width Osteoporosis Laos OSTEODENT Telemedicine system
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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