The conversation between human and AI assistant.
Black lines on inner teeth?
No, I haven't. Do you have any recommendations for a good whitening toothpaste?
There are many good whitening toothpastes on the market, but some popular options include Crest 3D White, Colgate Optic White, and Sensodyne Pronamel Gentle Whitening. Keep in mind that these toothpastes may not work for everyone, and it's important to continue practicing good oral hygiene habits for overall dental health. Is there anything else I can help you with?