Since your dental option has negotiated lower rates with network providers, you will likely pay less when you use a network dentist. If you see an out-of-network dentist, coverage levels do not differ from an in-network dentist, but you won’t be taking advantage of the negotiated rates—so you may have to pay the full cost at the time of care. Plus, you are responsible for any cost difference if the dental expenses are more than MetLife’s allowed reasonable and customary charges.