Nerve damage associated with inferior alveolar nerve blocks

Article Abstract:

Nerve damage may occur in dental patients who receive local anesthetic injections. Researchers studied 12 dental patients who had suffered nerve damage after local anesthetic injections. All patients had received an anesthetic injection along the inferior alveolar nerve and five required a second nerve block. Patients received one of three types of local anesthesia: lidocaine, prilocaine, or mepivacaine. Most had received a local anesthetic injection as part of ongoing dental treatment within three months before the nerve damage occurred. Seven patients reported an electric shock sensation when the hypodermic needle was inserted. Most cases of nerve injury affected the lingual nerve and the extent of the damage ranged from mild to fairly severe. Eighteen months after the nerve injury, eight patients still had signs of nerve damage.

Health aspects, Causes of, Peripheral nerve diseases, Peripheral nervous system diseases

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Lingual nerve damage due to inferior alveolar nerve blocks: a possible explanation

Article Abstract:

The lingual nerve may be injured more frequently than the inferior alveolar nerve during local dental anesthesia because it has fewer fascicles at the injection site than the inferior alveolar nerve. Most nerves are composed of one or more bundles of nerve fibers, which are called fascicles. A nerve that has many fascicles would be less likely to be injured than one that only has a few. This may explain why 70% of all injuries are lingual nerve injuries.

Injuries, Nerves

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Permanent nerve involvement resulting from inferior alveolar nerve blocks

Article Abstract:

The anesthetics that dentists use to numb a patient's jaw before treatment can sometimes cause permanent nerve damage. In a study of 83 patients with permanent nerve damage, prilocaine was more likely to cause damage than other anesthetics.

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