Yes you can Remineralize your your teeth.
Some ways you can Remineralize your teeth are by doing things that include eating a high-fat, low-carb diet, getting enough vitamin D, fixing your gut, and doing coconut oil pulling.
You can do things at home or go to the dentist for tooth remineralizing but once the tooth enamel or bone are gone, there's no way to get them back without replacing the entire tooth.
So you should take care of your teeth often as in brushing your teeth, using mouth wash, doing oil pulling, flossing your teeth and going to the dentist often for a regular dental cleaning and dental checkup.
You can also gargle with apple cider vinegar which helps kill bacteria and germs in your mouth to prevent tooth decay, gum disease and gingivitis.
Other things that can help Remineralize your teeth are fluoride toothpastes, fluoride mouth rinses, and professionally applied fluoride treatments.