Open Wide for Mouth Tech

There's money in your mouth. Figuratively speaking (we hope). A growing number of startups and full-fledged companies are looking to bring their smart technology into your mouth. A toothbrush that uses AI to monitor your brushing, dental floss as a subscription service, wearables for teeth—oral hygiene is a booming business for tech companies, who see dollar signs every time you flash your pearly whites. But who does this actually help? Do we really need to spend $200 on a high-powered toothbrush toothbrush? Meanwhile, as if coming along to undo all that cleaning, a computational chemist has finally worked out the formula for the perfect espresso. This week on Gadget Lab, we talk with WIRED senior correspondent Adam Rogers about the latest in mouth tech and how to brew coffee with math. Show Notes:  Read Adam’s story about the science behind espresso here. Read Luaren’s story about mouth tech here. For more coffee tips, check out our favorite portable coffee makers and our best latte and espresso machines. Recommendations:  Adam recommends Star Trek: Picard. Lauren recommends Little Women. Mike recommends buying and selling tickets on Cash or Trade. Adam Rogers can be found on Twitter @jetjocko. Lauren Goode is @LaurenGoode. Michael Calore is @snackfight. Bling the main hotline at @GadgetLab. The show is produced by Boone Ashworth (@booneashworth). Our consulting executive producer is Alex Kapelman (@alexkapelman). Our theme music is by Solar Keys. How to Listen You can always listen to this week's podcast through the audio player on this page, but if you want to subscribe for free to get every episode, here's how: If you're on an iPhone or iPad, open the app called Podcasts, or just tap this link. You can also download an app like Overcast or Pocket Casts, and search for Gadget Lab. If you use Android, you can find us in the Google Play Music app just by tapping here. We’re on Spotify too. And in case you really need it, here's the RSS feed.