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Fig.2: When the bottom right bridge (#28-31) is gone, the patient cannot chew on the right side. Heavy chewing on the left side (arrow) leads to break down of the bridge on that side (#18-20). The bridge is loose. One of the supporting teeth (#18) has a cavity (red area) under the crown and is tender to touch. It gets an infection. Two of the three parts of the bridge need to be removed.
Xin Wei, DDS, PhD, MS 1st edition 05/03/2015, last revision 05/03/2015