The disinfectant effects of portable ultraviolet light devices and their application to dentures
Interest in ultraviolet (UV) light devices for disinfection has increased due to pandemic concerns, but their efficacy in denture disinfection is underexplored. This study evaluated seven-enclosed type portable UV irradiation devices (devices A–G). Among these, devices A, B, and C used bulb light so...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-02-01
|
| Series: | Photodiagnosis and Photodynamic Therapy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1572100024004708 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832575503539634176 |
|---|---|
| author | Kae Harada Reiya Horinouchi Mamoru Murakami Masakazu Isii Yuji Kamashita Naohiro Shimotahira Fumio Suehiro Yasuhiro Nishi Hiroshi Murata Masahiro Nishimura |
| author_facet | Kae Harada Reiya Horinouchi Mamoru Murakami Masakazu Isii Yuji Kamashita Naohiro Shimotahira Fumio Suehiro Yasuhiro Nishi Hiroshi Murata Masahiro Nishimura |
| author_sort | Kae Harada |
| collection | DOAJ |
| description | Interest in ultraviolet (UV) light devices for disinfection has increased due to pandemic concerns, but their efficacy in denture disinfection is underexplored. This study evaluated seven-enclosed type portable UV irradiation devices (devices A–G). Among these, devices A, B, and C used bulb light sources, while devices D, E, F, and G utilized LED (light-emitting diode) light sources. All devices were assessed in agar plate assay, and Candida albicans and Staphylococcus aureus spread on agar plates and irradiated under two conditions: inoculated surface facing upward and downward. Colony counts were recorded. Devices A and D were tested on C. albicans-contaminated dentures immersed in C. albicans medium, with samples collected before and after irradiation on the mucosal surfaces of the dentures. Device A was tested on denture-wearing patients in a clinical study, with samples collected from mucosal surfaces before and after irradiation to assess microbial CFUs (colony forming units). Devices A, C, and D significantly reduced C. albicans and S. aureus on plates with the inoculated surface facing upward, while device F showed a slight reduction when the inoculated surfaces were facing downward. Devices A and D eliminated C. albicans on contaminated dentures in vitro. Device A reduced all microorganism CFUs on denture surfaces in clinical studies. This study demonstrates that some portable UV light devices effectively reduce microbial contamination on denture surfaces, suggesting their potential as valuable tools for improving denture hygiene in the future. |
| format | Article |
| id | doaj-art-2ff96b622cbf480ba54fb8defd4aa291 |
| institution | Kabale University |
| issn | 1572-1000 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photodiagnosis and Photodynamic Therapy |
| spelling | doaj-art-2ff96b622cbf480ba54fb8defd4aa2912025-02-01T04:11:41ZengElsevierPhotodiagnosis and Photodynamic Therapy1572-10002025-02-0151104434The disinfectant effects of portable ultraviolet light devices and their application to denturesKae Harada0Reiya Horinouchi1Mamoru Murakami2Masakazu Isii3Yuji Kamashita4Naohiro Shimotahira5Fumio Suehiro6Yasuhiro Nishi7Hiroshi Murata8Masahiro Nishimura9Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Japan; Department of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan; Correspondence author at: Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan.Department of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan; Department of General Dental Practices, Kagoshima University Hospital, Kagoshima, JapanDepartment of Removable Prosthodontics and Implant Dentistry, Advanced Dentistry Center, Kagoshima University Hospital, Kagoshima, JapanDepartment of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, JapanDepartment of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, JapanDepartment of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, JapanDepartment of Removable Prosthodontics and Implant Dentistry, Advanced Dentistry Center, Kagoshima University Hospital, Kagoshima, JapanDepartment of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, JapanDepartment of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, JapanDepartment of Fixed Prosthodontics and Orofacial Function, Graduate School of Dentistry, Osaka University, Suita, JapanInterest in ultraviolet (UV) light devices for disinfection has increased due to pandemic concerns, but their efficacy in denture disinfection is underexplored. This study evaluated seven-enclosed type portable UV irradiation devices (devices A–G). Among these, devices A, B, and C used bulb light sources, while devices D, E, F, and G utilized LED (light-emitting diode) light sources. All devices were assessed in agar plate assay, and Candida albicans and Staphylococcus aureus spread on agar plates and irradiated under two conditions: inoculated surface facing upward and downward. Colony counts were recorded. Devices A and D were tested on C. albicans-contaminated dentures immersed in C. albicans medium, with samples collected before and after irradiation on the mucosal surfaces of the dentures. Device A was tested on denture-wearing patients in a clinical study, with samples collected from mucosal surfaces before and after irradiation to assess microbial CFUs (colony forming units). Devices A, C, and D significantly reduced C. albicans and S. aureus on plates with the inoculated surface facing upward, while device F showed a slight reduction when the inoculated surfaces were facing downward. Devices A and D eliminated C. albicans on contaminated dentures in vitro. Device A reduced all microorganism CFUs on denture surfaces in clinical studies. This study demonstrates that some portable UV light devices effectively reduce microbial contamination on denture surfaces, suggesting their potential as valuable tools for improving denture hygiene in the future.http://www.sciencedirect.com/science/article/pii/S1572100024004708DentureUltraviolet lightDisinfectionOral healthDenture care |
| spellingShingle | Kae Harada Reiya Horinouchi Mamoru Murakami Masakazu Isii Yuji Kamashita Naohiro Shimotahira Fumio Suehiro Yasuhiro Nishi Hiroshi Murata Masahiro Nishimura The disinfectant effects of portable ultraviolet light devices and their application to dentures Photodiagnosis and Photodynamic Therapy Denture Ultraviolet light Disinfection Oral health Denture care |
| title | The disinfectant effects of portable ultraviolet light devices and their application to dentures |
| title_full | The disinfectant effects of portable ultraviolet light devices and their application to dentures |
| title_fullStr | The disinfectant effects of portable ultraviolet light devices and their application to dentures |
| title_full_unstemmed | The disinfectant effects of portable ultraviolet light devices and their application to dentures |
| title_short | The disinfectant effects of portable ultraviolet light devices and their application to dentures |
| title_sort | disinfectant effects of portable ultraviolet light devices and their application to dentures |
| topic | Denture Ultraviolet light Disinfection Oral health Denture care |
| url | http://www.sciencedirect.com/science/article/pii/S1572100024004708 |
| work_keys_str_mv | AT kaeharada thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT reiyahorinouchi thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT mamorumurakami thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT masakazuisii thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT yujikamashita thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT naohiroshimotahira thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT fumiosuehiro thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT yasuhironishi thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT hiroshimurata thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT masahironishimura thedisinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT kaeharada disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT reiyahorinouchi disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT mamorumurakami disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT masakazuisii disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT yujikamashita disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT naohiroshimotahira disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT fumiosuehiro disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT yasuhironishi disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT hiroshimurata disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures AT masahironishimura disinfectanteffectsofportableultravioletlightdevicesandtheirapplicationtodentures |