Percussive instruments-coronal disassembly devices, Biology

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Percussive instruments

-Crown and bridge remover CORONA flex

I. Nitch

-it's tip look like the curette and has hock
-4 or 5 tips according to tooth position and accessibility
-apply hock subgingivally on the margins of the crown one buccally and then lingually
- Do pressure occlusally to break the bond around the margins and remove the crown easily.

II. Crown Flex

-Has loop applied under the pontic area then fixed with arm

-It’s force automatically applied with gun attached in contra and stock or hock to separate the crown from the bridge or restoration.


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