My dd brushes her teeth at least twice a day and also uses a mouthwash. She gets a lot of tarter (sp?)build up and no matter what we do, her teeth never look clean. She doesn't eat a lot of sweets or sugary drinks. She goes to her dentist, which they just say she isn't brusing her teeth good enough. But I am helping her too so I don't know...Is there a good toothpaste or toothbrush or a homeopathic remedy?