The dentist says it's best to wash it every six months.

It doesn't hurt much when washing, but it's very uncomfortable (sizzling).

Now as long as there is a dental clinic, such as Jiulongpo No.1 Hospital,

It's next to Yangjiaping Light Rail Station.

If you want the best

Chongqing Stomatological Hospital.

Take the light rail to Shangqing Temple in Niujiaotuo, and you can get there directly.