Needle breakage risk (bending needle / inserting to hub)
What it is
Creating a high risk of needle fracture during dental LA by: • Bending the needle before insertion • Inserting the needle all the way to the hub (burying it) • Using a very fine needle (e.g., 30-gauge) for an IANB where deeper penetration increases hub-stress • Allowing sudden patient movement with the needle deep in tissue AAPD explicitly warns: needles are prone to breakage if bent prior to injection or inserted to their hub.
Why it happens
• Pre-bending to "improve access" (weakens the needle; increases stress concentration) • "Burying to the hub" during deep blocks (the hub-needle junction is the weakest area; if it fractures, retrieval is harder) • Using short or fine (30G) needles for IANB → encourages deep insertion to the hub • Sudden patient movement (especially anxious children) after insertion
The full clinical mistake entry includes
- How to avoid it — the prevention protocol
- The clinical tip experienced clinicians use
- The documented reference behind the mistake
More clinical mistakes
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