The importance of dental floss

I really brush my teeth diligently, but I still get cavities every now and then. ㅜ However, I heard so many people recommend using dental floss, so I make sure to use it these days. Haha. Even at my check-ups, the doctor told me to make sure to use floss!! Sometimes, even after brushing my teeth after eating meat or vegetables, it felt like they weren't cleaned properly!!! But whenever that happens, using floss makes my mouth feel so refreshed~ lol. I still don't know how to use the shortest length of floss... but I think I always end up using it anyway. Hahaha. Taking good care of my teeth...