NSAID
Non steroidal anti-inflammatory drug, often used as a dental analgesic.

Nerve
Tissue that conveys sensation, temperature, position information to the brain.

Nerve (Root) Canal
Dental pulp; the internal chamber of a tooth.

Night Guard
acrylic appliance used to prevent wear and temporomandibular damage caused by grinding or gnashing of the teeth during sleep.

Nitrous Oxide
A gas used to reduce patient anxiety.

Novocain
Older brand name for a local anesthetic, currently replaced by safer, more effective agents.