It is makruh to use toothpaste or majan while fasting because it has a taste.It is makruh to taste anything while fasting, but you can use miswak, it will not harm the fast.
There is a nice solution to this, you can brush toothpaste after Sehri, then there is no more fear. If you brush up with a brush, you will not need to brush during the day.
Using Miswak to clean the teeth of fasting is the best solution for the Prophet (PBUH). It is Sunnah. It will also get the gift.
The Prophet had ordered the use of Missotak in the condition of fasting 1400 years ago today, the best advantage of this is that it can be used to clean teeth and remove bad breath while fasting.
Therefore, dental protection has been used as a scientific and highly effective method for ages.
References: Al Bahrur Rayek, Volume-2, Page-279, Fatwaye Alamgiri, Volume-1, Page-199, Kitabul Fatawa, Volume-3, Page-401
