09/16/2026
Clinical Pearl of the Week | Endodontics
Hook: “Your working length can change during instrumentation—are you checking it?”
Clinical Pearl: Working length should not be considered a one-time measurement. Canal preparation can alter the canal anatomy, and debris accumulation or changes in apical patency may affect file positioning.
Reconfirm working length when indicated, especially after:
Establishing the glide path
Significant canal enlargement
Irrigation and recapitulation
Difficulty reaching the previously established length
Using an electronic apex locator, supported by radiographic assessment when appropriate, helps maintain accuracy throughout treatment.
✨ Accurate working length is not a single step—it’s an ongoing process.
Ending: “Don’t assume your working length. Reconfirm it.”
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