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UV-C Disinfection For Dentures: A Pilot Study

Purpose: Prosthetic restorations have to be sterilized or disinfected prior to deliver to patient or prior to send to dental laboratory to avoid cross-infections. However chemical disinfectants are shown to cause many alterations in the structure of the prosthetic materials and, can be toxic and allergic to living tissues. The aim of this study was to investigate the effectiveness of UV-C disinfection on denture base materials. Materials and Methods: Disc shaped polymethyl metacrylate specimens were prepared and divided into 3 groups and contaminated with E.coli, S.aureus ve C.albicans.Then every group was divided into three subgroups for UV-C irradiation of 1, 3, and 5 minutes. After UV-C irradiation, specimens were incubated for 24 hours at 35ºC in a tryptic soy broth medium in an incubator and the growth was inspected. Also suspension was transferred to sabouraud dextrose agar plates and incubated at 35°C for 24 hours. Results: For C.Albicans a time-dependent reduction was observed. Only 3 and 5 minutes of UV-C irradiation inhibited the growth.E.coli and S.aureus were shown to be inactivated by all three irradiation times. Conclusion: Bactericidal and fungicidal effects of UV-C irradiation was shown on denture base acrylic resin. Future studies are needed to evaluate the effect of UV-C on other microorganisms and on different materials.

Filiz Yağcı
Erciyes University Faculty of Dentistry Department of Prosthodontics
Turkey

Pınar Sağıroğlu
Erciyes University Faculty of Medicine Department of Medical Microbiology
Turkey

Aşkın Nur Tuğluk
Erciyes University Faculty of Dentistry Department of Prosthodontics
Turkey

 


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