Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress
For many years, we have been developing flexible sensors made of braided piezoelectric poly-l-lactic acid (PLLA) fibers that can be tied and untied for practical applications in society. To ensure good quality of sleep, the occurrence of bruxism has been attracting attention in recent years. Current...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/15/1/86 |
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| author | Yoshiro Tajitsu Saki Shimda Takuto Nonomura Hiroki Yanagimoto Shun Nakamura Ryoma Ueshima Miyu Kawanobe Takuo Nakiri Jun Takarada Osamu Takeuchi Rei Nisho Koji Takeshita Mitsuru Takahashi Kazuki Sugiyama |
| author_facet | Yoshiro Tajitsu Saki Shimda Takuto Nonomura Hiroki Yanagimoto Shun Nakamura Ryoma Ueshima Miyu Kawanobe Takuo Nakiri Jun Takarada Osamu Takeuchi Rei Nisho Koji Takeshita Mitsuru Takahashi Kazuki Sugiyama |
| author_sort | Yoshiro Tajitsu |
| collection | DOAJ |
| description | For many years, we have been developing flexible sensors made of braided piezoelectric poly-l-lactic acid (PLLA) fibers that can be tied and untied for practical applications in society. To ensure good quality of sleep, the occurrence of bruxism has been attracting attention in recent years. Currently, there is a need for a system that can easily and accurately measure the frequency of bruxism at home. Therefore, taking advantage of the braided piezoelectric PLLA cord sensor’s unique characteristic of being sewable, we aimed to provide a system that can measure the frequency of bruxism using the braided piezoelectric PLLA cord sensor simply sewn onto a bed sheet on which the subject lies down. After many tests using trial and error, the sheet sensor was completed with zigzag stitching. Twenty subjects slept overnight in a hospital room on sheets integrated with a braided piezoelectric PLLA cord. Polysomnography (PSG) was simultaneously performed on these subjects. The results showed that their bruxism could be detected with an accuracy of more than 95% compared with PSG measurements, which can only be performed in a hospital by a physician and are more burdensome for the subjects, with the subjects simply lying on the bed sheet with a braided piezoelectric PLLA cord sensor sewn into it. |
| first_indexed | 2024-03-08T10:40:40Z |
| format | Article |
| id | doaj.art-b4dd6e89ecc54f2b85e42c3a9c0faa90 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-08T10:40:40Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-b4dd6e89ecc54f2b85e42c3a9c0faa902024-01-26T17:44:12ZengMDPI AGMicromachines2072-666X2023-12-011518610.3390/mi15010086Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental StressYoshiro Tajitsu0Saki Shimda1Takuto Nonomura2Hiroki Yanagimoto3Shun Nakamura4Ryoma Ueshima5Miyu Kawanobe6Takuo Nakiri7Jun Takarada8Osamu Takeuchi9Rei Nisho10Koji Takeshita11Mitsuru Takahashi12Kazuki Sugiyama13Electrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanNishikawa Co., Ltd., Chuo, Tokyo 103-0006, JapanNishikawa Co., Ltd., Chuo, Tokyo 103-0006, JapanElectrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanElectrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanElectrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanElectrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanElectrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanElectrical Engineering Department, Graduate School of Science and Engineering, Kansai University, Osaka 564-8680, JapanFaculty of Foreign Language Studies, Kansai University, Osaka 564-8680, JapanTeijin Frontier Co., Ltd., Kita, Osaka 530-8605, JapanTeijin Frontier Co., Ltd., Kita, Osaka 530-8605, JapanRevoneo LLC, Fushimi, Kyoto 600-8086, JapanRevoneo LLC, Fushimi, Kyoto 600-8086, JapanFor many years, we have been developing flexible sensors made of braided piezoelectric poly-l-lactic acid (PLLA) fibers that can be tied and untied for practical applications in society. To ensure good quality of sleep, the occurrence of bruxism has been attracting attention in recent years. Currently, there is a need for a system that can easily and accurately measure the frequency of bruxism at home. Therefore, taking advantage of the braided piezoelectric PLLA cord sensor’s unique characteristic of being sewable, we aimed to provide a system that can measure the frequency of bruxism using the braided piezoelectric PLLA cord sensor simply sewn onto a bed sheet on which the subject lies down. After many tests using trial and error, the sheet sensor was completed with zigzag stitching. Twenty subjects slept overnight in a hospital room on sheets integrated with a braided piezoelectric PLLA cord. Polysomnography (PSG) was simultaneously performed on these subjects. The results showed that their bruxism could be detected with an accuracy of more than 95% compared with PSG measurements, which can only be performed in a hospital by a physician and are more burdensome for the subjects, with the subjects simply lying on the bed sheet with a braided piezoelectric PLLA cord sensor sewn into it.https://www.mdpi.com/2072-666X/15/1/86poly-l-lactic acidpiezoelectricitybraided cordsensingPLLA |
| spellingShingle | Yoshiro Tajitsu Saki Shimda Takuto Nonomura Hiroki Yanagimoto Shun Nakamura Ryoma Ueshima Miyu Kawanobe Takuo Nakiri Jun Takarada Osamu Takeuchi Rei Nisho Koji Takeshita Mitsuru Takahashi Kazuki Sugiyama Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress Micromachines poly-l-lactic acid piezoelectricity braided cord sensing PLLA |
| title | Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress |
| title_full | Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress |
| title_fullStr | Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress |
| title_full_unstemmed | Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress |
| title_short | Application of Braided Piezoelectric Poly-l-Lactic Acid Cord Sensor to Sleep Bruxism Detection System with Less Physical or Mental Stress |
| title_sort | application of braided piezoelectric poly l lactic acid cord sensor to sleep bruxism detection system with less physical or mental stress |
| topic | poly-l-lactic acid piezoelectricity braided cord sensing PLLA |
| url | https://www.mdpi.com/2072-666X/15/1/86 |
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