Outside of working hours your voice message should contain:
a. Your dental practice hours
b. Instructions for your patients in case of an emergency, i.e., call your cell phone, call 911, or call the on-call dentist
c. When the patient can expect to be called back
d. What information the patient should leave, i.e., the reason for the call, their name, and a good time to call back.
Your message should be clear, friendly, and professional.