If you have a dental emergency and your dentist pulls your severely infected tooth without prior negotiation about payment,or even any mention of payment,you have an express contract for payment for his services.

Contracts are classified as express or implied,depending on how they are created.The terms in express contracts are clearly set forth in either written or spoken words,while implied contracts arise not from words but from the conduct of the parties.If you have a dental emergency and your dentist pulls your severely infected tooth without prior negotiation about payment,or even any mention of payment,you have an implied contract for payment for his services.