not while you are fasting, but you can use a sewak- something that looks like a stick but it is not and comes in many types of flavors and you brush your teeth with it and it whitens your teeth. You just have to put it in water until it becomes soft and you brush your teeth with it. The Prophet p.b.u.h. used it.
by not brushing your teeth thouroughly
It is the Nacirema ritual of brushing your teeth.
you can drink or eat anything during the fast even your saliva.Saliva that normally it is prodeuced in mouth its normal that can be swallowed but not when its pouted outside the body.
mouth wash or breath mints
When you get a film in your mouth after brushing your teeth, you may be allergic to the toothpaste. Tartar control toothpastes and mouthwashes are usually the culprit for this issue and when you stopping using it, the film should disappear.
If your mouth is sore and you haven't been brushing, that could be why. If you have been brushing, go immediately to your dentist, it could be an infection
Brushing your teeth, gargling some mouthwash, and rinsing your mouth out with water mixed with salt are good ways to sanitize your mouth!
Brushing and flossing
Not brushing your teeth can cause them to rot and fall out of your mouth.
If you already have an issue with bad breath, then after brushing it becomes more noticeable because brushing your teeth make your mouth dryer, and a dry mouth has worse breath.I usually either just chew some gum or drink something till it wears off. However, those are only temporary solutions; I'm pretty sure the only way to "fix" the bad breath after brushing, is to either find a special tooth paste, (I've heard they exist, but I haven't seen them personally,) or to just keep up with the brushing. Mouth wash might also help.
Fornicate in their mouth.
the film is removed by .............................................................................................................................................................................. HOW WOULD I KNOW HAHAHAHAHA