inverted cone bur


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in·vert·ed cone bur

a rotary cutting instrument in the shape of a truncated cone with the smaller end attached to the shaft; generally used for entering carious pits or creating undercuts in cavity preparations.

in·vert·ed cone bur

(in-vĕrtĕd kōn bŭr)
Rotary cutting instrument in the shape of a truncated cone with the smaller end attached to the shaft; generally used for entering carious pits or creating undercuts in cavity preparations.