Directa PractiPal Compact Bur Holder · Red

A bur block is a holder with a hole for each bur, so the heads do not touch each other or a hand. Published guidance says instruments to be stored should be wrapped or placed in containers such as cassettes or organizing trays designed to maintain sterility during storage. For an unwrapped load, the same guidance says an internal chemical indicator should be placed in the tray or cassette with the items to be sterilized.

A bur block holds burs upright and separate; a bur brush scrubs the debris out of a used head before it is processed. Both exist because burs are hard to clean: published guidance says that because of the physical construction of devices such as burs, endodontic files and broaches, cleaning can be difficult. The same guidance says instruments should be placed in an appropriate container at the point of use, to prevent injuries during transport to the instrument processing area. Used burs are sharps, and guidance says to place them in an appropriate puncture-resistant container.

Guidance also notes that deterioration can occur on the cutting surfaces of carbide and diamond burs during processing and after repeated processing cycles, which is why it tells practices to consider hard-to-clean items as single-use disposables. A published review adds that residues left on an instrument can increase structural damage in materials such as burs and other rotary cutting instruments.

Sources: CDC, Guidelines for Infection Control in Dental Health-Care Settings — 2003 (MMWR 52(RR-17)) · Salas Orozco et al. 2025, Sterilization and Disinfection: Ensuring Infection Control in Dental Practices (Cureus)