Are there any good vitamins that treat dysplasia and prevent cervical cancer?

No. There are no vitamins that treat dysplasia. The best things to prevent cervical cancer are getting regular pap smears. Also, not smoking will lower your risk of cervical cancer.
None. Persistent human papilloma virus (hpv) infection has been known to cause cervical/vaginal dysplasia and cervical cancer. Hpv vaccine is currently recommended to children and young adults aged 11 to 26.