The county jails do not accept any form of health insurance - and it's because your insurance doesn't cover you while incarcerated. If he needs dental work or especially a root canal, then he will definitely have money taken from his account to cover the cost. There are some county jails where the inmates even have to pay for their incarceration - a daily rate.
https://www.inmateaid.com/ask-the-inmate/my-inmate-is-having-problems-with-his-tooth-and-thinks-he-may-need-a-root-canal-does-he-need-to-get-dental-insurance-he-was-told-that-if-he-goes-to-the-dentist-then-his-money-he-gets-and-has-on-his-books-will-be-taken-to-pay-for-the-dental-work-is-this-tr#answer
Accepted Answer Date Created: May 29,2013