The darkening of the root of the tooth may be related to caries, calculus, heavy metal overload and other reasons.
1. Caries: tooth damage caused by bacterial infection and other factors. In the early stage of the disease, the teeth will lose their luster, in the middle stage, cavities will be formed, and in the late stage, the caries damage will penetrate deep into the dentin, resulting in the phenomenon of blackened tooth roots.
2. Dental calculus: also known as tartar, refers to plaque and soft tartar deposited on the surface of the teeth, which will make the teeth and roots appear yellowish white to brownish black.
3. Excessive heavy metals: Some heavy metals such as lead, silver, bismuth, etc. may appear as gray-black lines in the gums, and may combine with dental plaque to form heavy metal sulfides, resulting in blackened roots.
There may be other reasons for the darkening of the root of the teeth, it is recommended to go to the hospital in time to complete the examination, to clarify the cause of the disease, and then give targeted treatment or treatment.