Overview
Trigeminal nerve injury often results from local anesthetic administration, particularly with articaine 4% during mandibular blocks, suggesting neurotoxicity as a primary mechanism rather than needle trauma 1.Diagnosis
Clinical presentation includes neurosensory disturbances (NSD) such as numbness, pain, or altered sensation in the trigeminal nerve distribution 1.
No specific diagnostic tests universally recommended; clinical history and examination are crucial 1.
Grading systems for severity of NSD may be applied based on symptomatology and functional impact 1.Management
Avoid use of articaine 4% for mandibular blocks to reduce risk of neurotoxicity 1.
Symptomatic treatment may include analgesics (e.g., NSAIDs) and possibly corticosteroids for inflammation 1.
Consider referral to neurology for persistent or severe symptoms 1.Special Populations
No specific guidelines provided for pregnancy, pediatrics, or elderly populations in the given abstracts 1.Key Recommendations
Avoid articaine 4% for mandibular nerve blocks to minimize risk of neurosensory disturbances (Evidence: Strong 1).
Employ alternative local anesthetics with caution, focusing on clinical monitoring for adverse reactions (Evidence: Moderate 1).
Provide symptomatic relief with appropriate analgesics and consider corticosteroids for inflammatory components (Evidence: Expert opinion 1).References
1 Hillerup S, Jensen RH, Ersbøll BK. Trigeminal nerve injury associated with injection of local anesthetics: needle lesion or neurotoxicity?. Journal of the American Dental Association (1939) 2011. link