People have used plants as medicine for a long time. In modern medicine, medicinal plants are used to discover new drug therapies. The antibacterial activity of certain medicinal plants, in particular, is a point of interest for many researchers, especially against oral bacteria like Streptococcus mutans.
S. mutans -- streptococci strains present in the mouth, pharynx and intestine -- are considered risk factors for dental caries, or what's more commonly known as cavities. In the mouth, S. mutans and other bacteria can stick to the enamel, where they produce strong acids that increase the risk of dental caries. Studies show that dental caries can form in as little as six months after the appearance of S. mutans.
In traditional medicine, people have used plants to prevent -- and even treat -- dental caries. For instance, the leaves and stems of medicinal plants are used to make teas that help with symptoms of dental caries and tooth infection. For others, essential oils extracted from the plants are used to alleviate pain and promote healing.
For this study, the team explored the ability of the following medicinal plants in preventing dental caries:
In addition, the team explored the antibacterial activity of the following essential oils:
The team also tested the antibacterial activity of the plants after being combined into an herbal mouthwash. They compared the mouthwash to chlorhexidine, a disinfectant found in prescription mouthwash formulas. While studies have shown that chlorhexidine can decrease bacteria in the mouth, it can also cause side effects like an altered taste, stained teeth and increased tartar.
Among the six natural sources, researchers found that neem exhibited the most potent antibacterial activity. In addition, the herbal mouthwash exhibited significant antibacterial activity against S. mutans. It's worth noting that both medicinal plants and essential oils performed better than chlorhexidine in terms of antibacterial activity. (Related: Natural mouthwashes clean your mouth just as well as chemical ones WITHOUT the side effects.)
Aside from the herbs mentioned in the study, there are other herbs and spices that you can use to treat and even prevent dental caries.
Learn more about natural treatments for dental caries at PlantMedicine.news.
Sources include:
BMCComplementMedTherapies.BioMedCentral.com