What is the ruling on using the siwak and toothpaste during the day in Ramadan?

The questioner : He asks: Does the paste used for cleaning teeth break the fast during the day in Ramadan?

The Shaykh : What is this paste? I understood that it is used for the teeth, but what is it? Is it water like dough? Explain it to us, explain it to us. Come on, explain it, explain it to us so that we are informed, and so that the brothers are also informed. Come on, and the purpose of it is to clean the teeth. Okay, did you understand what he said? He says: It is like dough, it is put in a tube, and it is a chemical compound. It is put on the brush and used to clean the teeth. Did you understand? Good. So, what is the ruling on its use by a person who is fasting?
It is known that something like this has the power to penetrate and spread, and that it may reach the throat and the stomach without you realizing it. Therefore, we say: do not use it. It is better not to use it. But if a person uses it and controls it completely so that it does not go down into his stomach, there is no harm in it, except that it is risky. For this reason, we say: instead of cleaning your teeth during the day, clean them at night. It remains that he said: the siwak for the fasting person.
Is it a sunnah or not? It is a sunnah at the beginning of the day, at the end of it, and at all times. Al-Bukhari (may Allah have mercy on him) mentioned from 'Amir ibn Rabi'ah in his Sahih, as a hanging hadith: