Temporary crowns are just as they are called, temporary. They are designed to cover and protect the teeth for a short period of time while the permanent crown(s) are being made. If you are in the middle of dental work, and do have temporary crowns it is important that you follow through with the work within the amount of time recommended by your dentist. Temporary crowns can be very irritating to the surrounding gum and should not be worn for extended periods of time. Additionally, the tooth underneath the temporary is not as well protected against saliva and plaque as with a permanent crown and can be more susceptible to cavities. Because temporaries are temporary they may come out occasionally, be sure to alert your dentist so that he may re-cement it for you.