Fig.2: There is a three-unit (B1, B2, and B3) bridge in the upper right quadrant of the mouth.  One of the supporting teeth (B1) has an abscess (black arrowhead). When we insert a rubber-like material (*) into the abscess from the mouth (Fig.1), the point of the material (red arrowhead) points to shadow of the root tip (black arrowheads, suggesting infection from B1).

B2 is used to replace a missing tooth.  B3 is the other supporting tooth.

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Xin Wei, DDS, PhD, MS 1st edition 06/29/2013, last revision 06/29/2013