If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The first thing you need to deal with as her personal dentist is to brush her teeth with a special toothpaste to remove any remaining debris between her teeth. Use a drill to get rid of those deep cavities that cause her toothaches and then make sure to remove the black crooked teeth that can't be saved. Replace them with pretty fake teeth and then apply a thin layer of a special gel to complete Draculaura's teeth whitening session up with! Once you're done, you also get the chance to apply some creepy tattoos on her sparkly white teeth. Enjoy it!