This patient recently moved to town and was having severe pain on biting and while drinking cold things. She had two white composite fillings placed the year before, but they were already showing signs of discoloration and leaking. We used something called a rubber dam to protect the cheeks, tongue, gums, and lips. The rubber dam also allows us to maintain a very clean tooth surface in preparation for adhesive bonding of new composite fillings. The patient has been pain and sensitivity free ever since we replaced the composite fillings!