IADR Abstract Archives
Mechanical Properties of Lemongrass Essential Oil-Incorporated Dental Tissue Conditioner
Objectives: Overcoming compromised oral hygiene and susceptibility to opportunistic oropharyngeal candidal infections in maxillectomy patients is a critical challenge. Tissue conditioners (TC) enhance the recovery of healing tissues and can serve as an effective vehicle for delivery of antimicrobial agents. The addition of lemongrass essential oil (EO) extract in TCs has shown promising antifungal properties, but their mechanical properties remain unexplored. Therefore, this study assessed the effects of lemongrass EO incorporation at various concentrations on the tensile bond strength (TBS) of TCs. The presence of the lemongrass EO in the TC was further evaluated using Raman spectroscopy.
Methods: Unmodified Coe-Comfort™ TC served as the baseline, whereas lemongrass EO-incorporated Coe-Comfort™ (final concentrations of 1.77%, 3.56%, and 7.17% [w/w]) served as the experiment groups. The TBS of Coe-Comfort™ to denture base acrylic was determined using Universal Testing Machine at 10 mm/minute crosshead speed (n = 10/group). Similarly, Raman spectrums for unmodified and modified TCs were obtained. Data analysis was performed using one-way ANOVA followed by post hoc Tukey HSD multiple comparison test, at p≤0.05.
Results: No significant difference of TBS was observed between unmodified Coe-Comfort™ and 1.77% (w/w) lemongrass EO Coe-Comfort™ groups (p=0.184). No significant difference was noted in TBS between 3.56% and 7.17% (w/w) lemongrass EO Coe-Comfort™ (p=0.971). Additionally, significantly higher TBS was observed in the unmodified and 1.77% (w/w) lemongrass EO Coe-Comfort™ groups compared to the 3.56% and 7.17% (w/w) groups. Besides these observations, the remaining test groups all had significant differences in TBS among them. Raman spectrum analysis confirmed the presence of lemongrass EO in the EO-incorporated TC samples.
Conclusions: Lemongrass EO-incorporated TC at concentration of 1.77% (v/v) showed adequate mechanical properties, which is also sufficient for long-lasting antifungal properties.
Methods: Unmodified Coe-Comfort™ TC served as the baseline, whereas lemongrass EO-incorporated Coe-Comfort™ (final concentrations of 1.77%, 3.56%, and 7.17% [w/w]) served as the experiment groups. The TBS of Coe-Comfort™ to denture base acrylic was determined using Universal Testing Machine at 10 mm/minute crosshead speed (n = 10/group). Similarly, Raman spectrums for unmodified and modified TCs were obtained. Data analysis was performed using one-way ANOVA followed by post hoc Tukey HSD multiple comparison test, at p≤0.05.
Results: No significant difference of TBS was observed between unmodified Coe-Comfort™ and 1.77% (w/w) lemongrass EO Coe-Comfort™ groups (p=0.184). No significant difference was noted in TBS between 3.56% and 7.17% (w/w) lemongrass EO Coe-Comfort™ (p=0.971). Additionally, significantly higher TBS was observed in the unmodified and 1.77% (w/w) lemongrass EO Coe-Comfort™ groups compared to the 3.56% and 7.17% (w/w) groups. Besides these observations, the remaining test groups all had significant differences in TBS among them. Raman spectrum analysis confirmed the presence of lemongrass EO in the EO-incorporated TC samples.
Conclusions: Lemongrass EO-incorporated TC at concentration of 1.77% (v/v) showed adequate mechanical properties, which is also sufficient for long-lasting antifungal properties.