What are the purposes of using occlusal splints?
1. To change the pattern and degree of tactile afferent neural impulses.
2. To immobilize teeth.
3. To prevent teeth from disturbing occlusal sensory input.
4. To produce a permanent change in the occlusion.

(1) (2) (3)

(1) and (3)

(2) and (4)

(4) only

All of the above.