JS Dental Lab Night Guard for Teeth Grinding and Clenching - One Unit for Upper or Lower TeethDetails: 3D night guards are designed and specially made for patients customers who have irregular bite such as overbite, underbite, etc or who has tried other custom night guards and still has bite problem. What 3D night guards do is to imitate complement your own bite to create maximum comfort while wearing the night guards. We also use the highest quality impression putties and material for night guards in the industry.