start-ver=1.4
cd-journal=joma
no-vol=17
cd-vols=
no-issue=7
article-no=
start-page=902
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2025
dt-pub=20250711
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Development of an Antimicrobial Coating Film for Denture Lining Materials
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background/Objectives: Denture hygiene is essential for the prevention of oral candidiasis, a condition frequently associated with Candida albicans colonization on denture surfaces. Cetylpyridinium chloride (CPC)-loaded montmorillonite (CPC-Mont) has demonstrated antimicrobial efficacy in tissue conditioners and demonstrates potential for use in antimicrobial coatings. In this study, we aimed to develop and characterize CPC-Mont-containing coating films for dentures, focusing on their physicochemical behaviors and antifungal efficacies. Methods: CPC was intercalated into sodium-type montmorillonite to prepare CPC-Mont; thereafter, films containing CPC-Mont were fabricated using emulsions of different polymer types (nonionic, cationic, and anionic). CPC loading, release, and recharging behaviors were assessed at various temperatures, and activation energies were calculated using Arrhenius plots. Antimicrobial efficacy against Candida albicans was evaluated for each film using standard microbial assays. Results: X-ray diffraction analysis confirmed the expansion of montmorillonite interlayer spacing by approximately 3 nm upon CPC loading. CPC-Mont showed temperature-dependent release and recharging behavior, with higher temperatures enhancing its performance. The activation energy for CPC release was 38 kJ/mol, while that for recharging was 26 kJ/mol. Nonionic emulsions supported uniform CPC-Mont dispersion and successful film formation, while cationic and anionic emulsions did not. CPC-Mont-containing coatings maintained antimicrobial activity against Candida albicans on dentures. Conclusions: CPC-Mont can be effectively incorporated into nonionic emulsion-based films to create antimicrobial coatings for denture applications. The films exhibited temperature-responsive, reversible CPC release and recharging behaviors, while maintaining antifungal efficacy, findings which suggest the potential utility of CPC-Mont-containing films as a practical strategy to prevent denture-related candidiasis.
en-copyright=
kn-copyright=

en-aut-name=YoshiharaKumiko
en-aut-sei=Yoshihara
en-aut-mei=Kumiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KameyamaTakeru
en-aut-sei=Kameyama
en-aut-mei=Takeru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NagaokaNoriyuki
en-aut-sei=Nagaoka
en-aut-mei=Noriyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=MaruoYukinori
en-aut-sei=Maruo
en-aut-mei=Yukinori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=YoshidaYasuhiro
en-aut-sei=Yoshida
en-aut-mei=Yasuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=Van MeerbeekBart
en-aut-sei=Van Meerbeek
en-aut-mei=Bart
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=OkiharaTakumi
en-aut-sei=Okihara
en-aut-mei=Takumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

affil-num=1
en-affil=National Institute of Advanced Industrial Science and Technology (AIST), Health and Medical Research Institute
kn-affil=

affil-num=2
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=3
en-affil=Dental School, Advanced Research Center for Oral and Craniofacial Science, Okayama University
kn-affil=

affil-num=4
en-affil=Department of Prosthodontics, Okayama University
kn-affil=

affil-num=5
en-affil=Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University
kn-affil=

affil-num=6
en-affil=BIOMAT, Department of Oral Health Sciences, KU Leuvem
kn-affil=

affil-num=7
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=
en-keyword=antimicrobial
kn-keyword=antimicrobial
en-keyword=denture liner
kn-keyword=denture liner
en-keyword=cetylpyridiniumchloride
kn-keyword=cetylpyridiniumchloride
en-keyword=drug release
kn-keyword=drug release
en-keyword=drug recharge
kn-keyword=drug recharge
END