• adult teeth
  • child teeth

Word Meaning
Nerve The tissue that relays sensation, pressure, temperature and other information to and from the brain. 
Nerve Treatment The same as root canal treatment. 
Nightguard A plastic shield worn over the upper teeth to prevent grinding and clenching while asleep. Similar to a mouthguard. 
Nitrous Oxide A gas inhaled as a sedative to reduce anxiety, and sensitivity to pain, while the patient remains awake. Also used as a general anaesthetic.