Effectiveness of a novel experimental herbal toothpaste against bacterial consortium associated with dental caries

Sánchez-Tito M.; Tay L.-Y.; Zea-Gamboa F.; Cartagena-Cutipa R.; Flores-Gómez A.; Spigno-Paco B.; Cadenas T.-C.-H.; Díaz I.-E.-C. · Journal of Clinical and Experimental Dentistry (2024) · DOI: 10.4317/jced.61356

Resumen

Background: To evaluate the effectiveness of an experimental toothpaste based on Hypericum laricifolium Juss. essential oil against a bacterial consortium associated with dental caries. Material and Methods: The antibacterial activity of the essential oil was evaluated by the disk diffusion and microdilution tests against Streptococcus mutans, Streptococcus sanguinis and Streptococcus salivarius. Petri dishes were incubated at 37°C for 24 h. An experimental toothpaste was prepared at a concentration of 201.76 mg/mL. The antibacterial activity of the experimental and six commercial toothpastes were evaluated by agar well-diffusion method. Petri dishes were inoculated with a bacterial consortium prepared with the three strains. 80 mg of the toothpastes were placed in the wells and the Petri dishes were incubated at 37°C for 24 h. The inhibition zones were measured with a digital compass. The differences between the pastas were evaluated with the one-way ANOVA test, with a 5% level of significance. Results: The essential oil was more effective than 0.12% chlorhexidine in inhibiting the growth of S. mutans (29.02±1.74 mm) and S. sanguinis (21.92±3.43 mm), being more moderate for S. salivarius (17.66±1.11 mm). In MBC tests, the EO showed complete inhibition of the growth of S. mutans at a concentration of 5% (50.44 mg/mL), 10% (100.88 mg/mL) for S. sanguinis and 2.5% (25.22 mg/mL) for S. salivarius. The experimental toothpaste was effective in inhibiting the growth of the bacterial consortium (31.88±66 mm), having a similar performance to Total Dent, Colgate Total 12, Kolynos® Herbal and Colgate® Herbal (p > 0.05). Conclusions: The development of an experimental paste based on H. laricifolium Juss. essential oil (0.28% v/v) showed an important antibacterial activity similar to commercial toothpastes against a bacterial consortium of S. mutans, S. sanguinis and S. salivarius. © Medicina Oral S. L. C.I.F. B 96689336 - eISSN: 1989–5488 eMail: jced@jced.es

Instituciones: Universidad Peruana Cayetano Heredia; Universidad Nacional de Ingeniería; Universidad Privada de Tacna