Application of Organoselenium in inhibiting Candida albicans biofilm adhesion on 3D printed denture base material

PURPOSE

Denture Stomatitis, a chronic mucosal inflammation associated with Candida albicans, is common among denture wearers. Several health conditions have been linked to chronic Candida infections. The complex, multifactorial nature of denture stomatitis requires the continuous pursuit of effective long-term solutions. The present in vitro study investigated the effect of incorporating organoselenium into 3D-printed denture base resin on Candida albicans adhesion and biofilm formation.

MATERIALS AND METHODS

Thirty disks were fabricated using 3D-printed denture base resin and assigned to 3 experimental groups (10/group): disks without organoselenium (control), disks with 0.5% organoselenium (0.5%SE), and disks with 1% organoselenium (1%SE). Each disk was incubated with approximately 1 × 10⁶ cells/mL of Candida albicans for 48 hours. Microbial viability (CFU/mL) was quantified by the spread plate method, while Confocal laser scanning microscopy and scanning electron microscope were performed for quantifying the biofilm thickness and examining biofilm morphology, respectively. Data were analyzed using One-way ANOVA with Tukey's multiple comparisons test.

RESULTS

CFU/mL was significantly (P<0.05) higher in Control when compared with 0.5%SE and 1%SE, but no significant difference between 0.5%SE and 1%SE. A similar trend was observed with biofilm thickness except that there was no significant difference between the Control and 0.5%SE. There was C. albicans biofilm adhesion on the Control disks, with yeast cells and hyphae formation, whereas on 0.5%SE and 1%SE, there was inhibition of yeast cells transition to hyphae formation.

CONCLUSIONS

Incorporation of organoselenium into 3D-printed denture base resin was effective in reducing Candida albicans biofilm formation and growth on denture base material. This article is protected by copyright. All rights reserved.