Device used for debonding a temporary or permanently placed crown or bridge. A sliding hammer design utilizes a small hook which engages the restoration margin and then a weight is slid along the shaft in a series of short, quick taps to loosen the restoration. The forces must be directed along the path of removal to avoid damage to the underlying tooth. A wire may also be looped through the bridge embrasure onto which a force can be applied. A number of potentially less damaging commercial products are available.
Addy L. D., Bartley A., Hayes S. J. Crown and bridge disassembly – when, why and how. Dent Update 2007;34:140–50.