Figure 6: (a) WamKey (Dentsply Maillefer Instruments, Ballaigues, Switzerland) can be used to atraumatically and quickly remove crowns, (b) a slot is prepared on the buccal aspect just below the fit surface of the occlusal aspect of this metal-ceramic crown. | British Dental Journal

Figure 6: (a) WamKey (Dentsply Maillefer Instruments, Ballaigues, Switzerland) can be used to atraumatically and quickly remove crowns, (b) a slot is prepared on the buccal aspect just below the fit surface of the occlusal aspect of this metal-ceramic crown.

From: A practical guide to endodontic access cavity preparation in molar teeth

Figure 6

(c) The WamKey is inserted into the access hole and rotated, (d) the crown comes off in one piece. (e) The existing restoration is removed to reveal an unrestorable tooth. If the tooth had been restorable the existing crown may have been used as a temporary crown

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