Patient's question:
Three months ago, I was treated for pelvic inflammatory disease in the hospital.Doctor's answer:
Guidance: Tooth discoloration can be caused by intrinsic or extrinsic factors. Extrinsic staining occurs due to various bacteria on the tooth surface, which secrete a significant amount of sticky substances. Everyday dietary stains like tea residue, tobacco stains, and certain minerals in drinking water adhere to these sticky substances, gradually causing the teeth to turn yellow or black. Intrinsic staining is formed during the development of the teeth. For example, if tetracycline deposits in the dentin, it can cause the teeth to turn yellow, brown, or dark gray, known as tetracycline staining. If the drinking water contains excessive fluoride, it may also lead to fluorosis, characterized by chalky white or brownish patches on the tooth surface. Additionally, if the dental nerve dies and combines with bacterial byproducts, the teeth may turn black.