Fact:
The following is the MUI explanation of the above problem taken from the halalmui.org page, the link is below:

“Lately, the virtual world has been making a fuss about brushes or toothbrushes/toothbrushes made of 'bristle' because they are DEFINITELY made from pigs. Although we are required to be vigilant, not all bristle terms always refer to sea urchins.

The lexical meaning of bristle is a short, stiff hair, fiber, etc (Webster's Dictionary). So all the hair, the stiff fiber, then the term will be referred to as bristle. Hair, stiff beard, can be categorized as bristle. Another example is that stiff fibers or pine leaves can also be referred to as bristle.

So, how is its application in the industrial world? In the industrial world, bristle is indeed used as a material for making brushes or brushes, including toothbrushes. Bristle can be sourced from animal hair or plant fibers or synthetic fibers such as nylon and silicone. The animal hair used can be sourced from pigs, goats, horses, or camels. The plant fiber that has also been used as a brush or brush material is palm fiber. Nylon is also a synthetic fiber that is commonly used for brushes, brushes or toothbrushes.

From the halal aspect, brushes and brushes, including toothbrushes derived from animal hair, are critical points. When the material is sea urchin then it should not be used because any material derived from pigs is both haram and unclean, either in dry or wet form. In addition, besides the prohibition of the substance, the MUI has issued a fatwa for anything derived from pork that is haram for its use (al-intifa') including the fur.

But the problem is that not all brush or brush or toothbrush users are able to recognize whether the brush they are using is a brush or a brush that comes from pig bristles. One of the information that can be seen as a marker that a brush or brush comes from sea urchins is to write it down
as a product name for example “Boar Bristle Brush”. Boar is the English term for wild boar or wild boar. This means that the product is a brush that uses wild boar bristles. Toothbrush can also use this boar bristles. amazon.com,
The global online shop also offers pig toothbrushes under the name “Fuchs Toothbrushes Pure Natural (Boar) Bristle Record V Adult Soft (Pack of 5)-Assorted colors by Fuchs Toothbrushes”

However, brushes, brushes, or toothbrushes are not always made from pigs even though they have bristle written on them, because the term bristle is still a general term. There are several manufacturers who have used goat hair or camel or horse hair as brush material or made of nylon. The last group of materials is clearly acceptable. When there is no information on the source of the material, at least a simple method can be used. To determine whether it is made from animal hair or not, the method in question is to burn the material. If it smells like burning hair or horns, better leave it alone. Materials from plastic or coconut fiber do not emit such a distinctive odor when burned.