Wrong injection technique → anesthetic failure
What it is
Using an incorrect local anesthesia technique (wrong landmarks, wrong needle path/depth, wrong target site, poor patient positioning/mouth opening, or injecting in the wrong plane), leading to failed or partial anesthesia — most notably with mandibular blocks (e.g., inferior alveolar nerve block, IANB), which have a meaningful failure rate and are very technique-sensitive.
Why it happens
• Landmarking errors (most common): inaccurate identification of anatomical landmarks is a major reason IANB fails; anesthesia fails when solution is not deposited close enough to the nerve before it enters the mandibular foramen • Needle placement errors: being too anterior/posterior or too inferior/superior relative to the mandibular foramen area • Patient/anatomy variability + operator technique: conventional IANB success is limited partly due to anatomical variation and technical errors • Poor injection fundamentals: in pediatric best-practice guidance, clinicians are advised to focus on proper needle placement, aspiration, and slow injection — technique issues can increase discomfort and reduce effectiveness
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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