Can I use disposable toothbrush and toothpaste in the hotel?

You can use it. It doesn't matter if a friend who lives in a hotel uses it occasionally. If you travel frequently, friends who stay outside the hotel suggest bringing their own toiletries, which is good for your teeth. Although the toothpaste in the hotel can be used, the quality of the toothpaste is not very good, and it is not good for the teeth if it is used frequently.