New powder whitens, repairs and protects teeth
White teeth are widely revered in many countries. Hollywood, advertising, and social media have helped to make ultra-white teeth a must-have, and even an obsession. For decades, people have used peroxide-based chemical whiteners in an attempt to get a perfect set of "pearly whites". However, these chemicals can damage the teeth and gums. Help is now at hand for those of us who have stained or off-white teeth. Researchers in China say they have created an effective teeth-whitening ceramic powder. Researcher Min Xing said it is "a safe, at-home teeth-whitening strategy integrating whitening, enamel repair, and microbiome balance for long-term oral health".
The researchers wrote about how their new powder works. It is activated by electric toothbrush vibrations, which create a small electric field over the teeth. This causes a reaction known as "reactive oxygen species". These are compounds that break down stain-causing molecules. The researchers said their laboratory trials were very promising. They tested human teeth that were artificially discoloured with tea and coffee. After four hours of brushing, there was visible whitening. After 12 hours of cleaning, the teeth were 50 per cent whiter than those brushed with saline. The researchers said the next step is to incorporate the powder into a toothpaste formula.
How Can I Get the Breaking News English Podcast?
- Just copy and paste the following web address into the URL field of the podcast software you are using.
https://breakingnewsenglish.com/rss.xml
- If you are using iTunes, just click here for automatic subscription to this podcast.
What's a Podcast?
- A podcast is an audio file (most often an MP3) that you can download to your computer or music player (such as an iPod).
- You can listen to a podcast on a music/MP3 player or a computer.
Podcast Software
- Your podcast software will automatically download Breaking News English's daily listening onto your computer and/or music/MP3 player.
- There is no need to visit the Breaking News English site to download the podcast once the above URL is in your podcast software, unless you also wish to look at or download the news article.
- You can listen to the audio file with iTunes, MediaPlayer or RealPlayer.
See Lessons Based On These Themes
Help Support and Promote This Website
Recommend my site on blogs, forums and other sites.
Message me on Facebook or tweet me to say "hi" and give me feedback.
Consider buying my 1,000 Ideas and Activities book.
Please consider helping Breaking News English.com.
Share