It’s extrinsic stains. It will go after professional cleaning. Get it done by your near dentist.

Dx : Extrinsic stains due to drinking tea/coffee or tobacco stains.

Based on the photograph, the brownish spot on your tooth could be due to surface staining. Such stains are commonly caused by tea, coffee, tobacco, certain foods, or plaque buildup and cannot always be removed by regular brushing. The good news is that these stains can usually be removed with professional scaling and polishing performed by a dentist. There is no need to use over-the-counter whitening products, as they are unlikely to remove these stains and may cause tooth sensitivity if used unnecessarily.

Hello. I understand your concern regarding the spots. These are nothing but extrinsic stains that get deposited on the surface of teeth due to consumption of Tea,coffee, smoking, turmeric, and certain antibiotics. These stains are hard to go just by brushing. It requires Oral Prophylaxis ie Scaling and if required Polishing. Scaling should be done once in 6months. It is a very common myth that scaling and polishing erodes enamel, which is false. As dentists use Ultrasonic scaler that is just vibration with water irrigation. After cleaning( scaling) the dentist will prescribe you required mouthwash and paste to maintain the oral hygiene.

Hello Looks like extrinsic stains Kindly get scaling done