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Chinese scientists develop prototype teeth– Whitening powder activated by vibration electric toothbrush.
Scientists hope the findings will lead to a new, effective home treatment to safely whiten teeth and promote oral health.
Teeth can become stained due to genetic factors or from foods and drinks such as tomatoes. coffee, Even if you brush your teeth regularly. Although widely stipulated chemical whitener Help remove stains, but they can also damage teeth in the process.
For example, peroxide-based bleaching gels and mouthwashes commonly used in dental offices to whiten stained teeth produce molecules called reactive oxygen species (ROS), which break down the stain-causing molecules but can also damage tooth enamel.
Now, scientists have designed a powder that both whitens and protects teeth when activated by the vibrations of an electric toothbrush.
“This work provides a safe at-home teeth whitening strategy that combines whitening, enamel repair and microbiome balancing to achieve long-term oral health,” said Min Xing, one of the authors of the study published in the journal. ACS Nano.
The new powder only produces ROS when activated by vibration from an electric toothbrush, strengthening and repairing teeth in the process.
It consists of charged strontium particles and calcium The compound barium titanate is placed in a solution, heated and formed into a ceramic powder, called BSCT.
When vibrated, the powder creates a small electric field, similar to how a quartz crystal powers a watch, the researchers said.
The scientists note that the electric field then causes a chemical reaction in the powder that produces reactive oxygen species.
The researchers conducted laboratory experiments using human teeth artificially stained with tea and coffee.
Significant whitening was observed after four hours of brushing with BSCT and electric toothbrushes.
Scientists found that after 12 hours of brushing, the treated teeth were almost 50 percent brighter compared to a control group stained in the same way but brushed with salt water.
BSCT brushing can also regenerate damaged enamel and dentin in some teeth because the strontium, calcium and barium ions contained in the powder form deposits on the tooth surface.
The researchers also tested the powder on mice fed a high-sugar diet.
Study finds that brushing teeth for one minute over four weeks using BSCT helps mice restore good oral bacteria and kill periodontitis-causing bacteria Porphyromonas gingivalis and Staphylococcus aureus bacteria.
“By overcoming the limitations of traditional tooth whitening techniques, this strategy provides a safe, family-friendly alternative for whitening, mineral restoration, cavity prevention, and long-term maintenance of oral health,” they wrote.