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Published on: November 6, 2019
Ocular complications associated with local anesthesia administration in dentistry
Sean G Boynes1, Zydnia Echeverria, Mohammad Abdulwahab
1Department of Anesthesiology, University of Pittsburgh, School of Dental Medicine, Pittsburgh, PA 15261, USA. seangboynes@hotmail.com
Local anesthesia in dentistry can cause rare but serious eye complications like vision loss. Dentists must use proper injection techniques to prevent these adverse events.
Area of Science:
- Dentistry
- Neuroscience
- Ophthalmology
Background:
- Local anesthetics are essential for pain control in dental procedures.
- Nerve blocks targeting the trigeminal nerve (cranial nerve V) are common in dentistry.
- Intraoral injections carry a risk of affecting unintended nerves.
Observation:
- Inadvertent anesthesia of nerves beyond the oral cavity can occur.
- Ocular complications, including oculomotor paralysis and vision loss, are potential risks.
- These complications arise from unintended nerve blockade during dental anesthesia.
Findings:
- The trigeminal nerve (cranial nerve V) branches innervate structures within and outside the oral cavity.
- Anesthetic solutions can spread to affect cranial nerves controlling eye movement and vision.
- Awareness of potential ocular side effects is crucial for dental practitioners.
Implications:
- Dentists must be knowledgeable about potential ocular complications from local anesthesia.
- Appropriate injection techniques are vital to minimize the risk of vision loss and paralysis.
- Understanding management protocols for these rare complications is essential for patient safety.
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