Make sure to brush your teeth twice each day.

You should floss at least once a day. [3] X Research source

Most whitening strips are made with hydrogen peroxide, and they work by removing the top salivary layer from your teeth. The hydrogen peroxide then lifts the stain away, and the salivary layer is replenished over the next few days. [5] X Expert Source Alina Lane, DDSBoard Certified Dentist Expert Interview. 21 April 2020.

During an oral checkup, your dentist will clean your teeth, including your gold tooth or crown. They will also look for any problems, like gingivitis or periodontal disease.

Talk to your dentist about the proper cleaner. You can buy cleansers specifically designed for cleaning gold teeth online.

Try a soft cotton microfiber cloth.

For example, you should choose 18 or 24 karat gold if you want to continue smoking. It won’t tarnish as quickly as lower quality.

Additionally, you should never use gold polish on gold teeth.

Cleaning it each day removes bacteria that can accumulate in the grill, along with removing remnants of leftover food.

You can also pat it dry.

Food caught under the grill can also injure your sensitive gum tissue.