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From Biology-Online Dictionary | Biology-Online Dictionary
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1. An instrument used to distribute a substance over a surface or area.

2. A device for spacing or parting structures.

gutta-percha spreader, an instrument used in dentistry for condensing gutta-percha laterally in a root canal.

rib spreader, an instrument for widening the space between ribs in intrathoracic operations.

root canal spreader, a tapered instrument utilised for condensing root filling materials laterally.