Advances in Engine Driven Instruments

Advances in Engine Driven Instruments

GATES GLIDDEN DRILL

Ø  Long thin shaft, ending in a flame shaped head which cuts only laterally.

Ø  A safe tip guard to prevent perforation.

Ø  Used with slight apically directed pressure & pulled back.

Ø  If it get binds into dentin, fracture occurs at narrowest diameter i.e. at neck near the hand piece. So ease in retrieval from canal.

Ø  Speed: 750 to 1000rpm.

FLEXO GATES

Ø  Hand instrument designated for apical preparation.

Ø  A smooth flexible shank which is circular and small in cross section.

Ø  Weak at the handle of the thin shank to ensure access for the removal of broken instrument.

PEESO REAMER

•          Long, sharp flute connected to thick shaft.

•          Non cutting tip

•          Cuts only laterally

•          Large rake angle than GG.

Indication:

                To prepare post space in the obturated canal.