Spreaders are long, tapered metal instruments with a pointed tip. Their primary purpose is to laterally compress gutta-percha (the rubber-like filling material) against the sides of the prepared root canal.This process creates space for additional accessory cones, ensuring a dense, hermetic seal that fills the canal's irregularities and the apical periphery.
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Features
Pointed Conical Tip: Unlike pluggers (which have flat tips for vertical pressure), spreaders have sharp, pointed tips to penetrate deep into the canal and wedge material laterally.
Tactile Control: Finger spreaders (as seen in image_0f933e.png) allow dentists to feel the resistance of the filling material more accurately, reducing the risk of over-compacting or fracturing the root.
High Flexibility: Modern spreaders are often made of Stainless Steel or Nickel-Titanium (NiTi); NiTi versions offer superior flexibility and memory for navigating curved canals.
Sterilizable: Designed to be fully autoclavable to maintain strict clinical hygiene standards.