Advantages:

1. Last a long time.
2. Can be tightened or repaired.
3. . Allow the bite to “settle” into a more comfortable position over time.

Disadvantages

1. . Do not cover the biting surface of the teeth, so do not protect against grinding.
2. Allow slight movement of the teeth.
3. Are more expensive to replace.
4. More noticeable visually as the the metal wire can be seen.
5. Bulky coverage of the palate is bothersome to some patients.
6. Can be lost or broken.