Quick Definitions



Amalgam – This is a silver and mercury mixture that is used for fillings.

Arch – Collectively, this refers to either the teeth or the basal bone of either jaw.

Bonding – The process where a tooth-colored resin is applied to repair and/or change the color or

shape of a tooth, most often a front tooth

Bruxism – Refers to the involuntary “nervous” clenching or grinding of your teeth, especially at

night while asleep.

Caries – This is another term for tooth decay

Cavity – A small hole in your teeth that is caused by tooth decay.

Class I Malocclusion – (most common) Refers to when your bite is normal but your upper teeth

slightly overlap the lower teeth

Class II Malocclusion – Where your upper jaw and teeth overlap severely the bottom jaw and

teeth. This is also referred to as an “overbite” or “buck teeth”

Class III Malocclusion – Refers to when the lower jaw protrudes forward, causing the lower jaw

and teeth to overlap the upper jaw and teeth. This is also called an “underbite”.

Closed bite – (or “deep bite”) A malocclusion where the upper teeth cover the lower teeth when

you bite down.

Cosmetic Dentistry – The aesthetic improvement of the color and shape of teeth performed by a

general dentist

Crossbite – Is an abnormal bite relationship of the upper and lower jaw. The lower teeth/tooth

align toward the cheek or lip side more than the upper teeth or tooth.

Crowding – An Orthodontic problem caused by having too many teeth in two small of a space.

Crown – The part of your tooth above your gum. Also, a crown is referred to as a dental appliance that

replaces and covers the entire part of a tooth above the gum line.

Decalcification – The loss of calcium from your teeth, weakening your teeth and makes them

more susceptible to decay.

Dental Implant – This is usually a titanium cylinder that is surgically placed in the bone of the

upper or lower jaw to replace the root of a missing tooth

Dentition – Term to denote the arrangement of the teeth.

Denture – A synthetic replacement for all of your teeth in either your upper or your lower jaw.

Diastema – Refers to a space between two teeth.

Endodontist – Is a dentist who specializes in root canals and the treatment of diseases or

injuries that affect the root tips or nerves in your teeth.

Eruption – When a new tooth comes in, the tooth is said to erupt when the tooth breaks through

the surface of your gums.

Gingivitis – The mildest form of gum disease: inflammation of gum. The earliest sign is bleeding

gum and the first sign of periodontal (gum) disease. This is brought on by the bacteria in dental

plaque if it is not removed on a daily basis.

Impacted tooth – An unerupted tooth that is not able to come in normally or is stuck beneath

another tooth or bone.

Impressions – The first step in making a model of your teeth. You bite into a container filled with

algenate, which hardens to produce a mold of your teeth.

Implant – Usually a replacement for one or more missing teeth. The implant differs from a bridge

in that the implant is permanently attached into your jaw.

Lingual arch – Is an orthodontic wire attached from molar to molar in the inside of your teeth.

Malocclusion – (often called crooked teeth or a “poor bite”) refers to the improper fit and alignment of

the teeth and jaws. A common cause of malocclusion is teeth that have too much or too little room in

the jaw.

Mandibular – Term for the lower jaw

Maxillary – Term for the upper jaw

Open bite – A type of malocclusion where the teeth do not close or come together in the front of

your mouth

Orthodontics – Is a specialized field in dentistry, involving the diagnosis, prevention, and

treatment of bite abnormalities or facial irregularities.

Orthodontist – A dentist who has been specially trained to perform orthodontics.

Overbite – Is the vertical overlapping of the upper teeth over the lower teeth.

Overjet – Is the horizontal projection of upper teeth beyond the lower teeth.

Panoramic X-ray – An X-ray taken by a machine that rotates around your head to give the

orthodontist a picture of your teeth, jaws and other important information.

Periodontal – Referring to the gums.

Periodontist – A dentist who specializes in the treatment of diseases of your gums.

Plaque – A colorless, odorless, sticky substance containing acids and bacteria that causes

tooth decay.

Prophylaxis – Cleaning or polishing your teeth. It also means the prevention of diseases.

Proximal – Refers to the surfaces of teeth that touch the next tooth; the space between adjacent

teeth is the interproximal space.

TMD – (or Temperomandibular Disorder); the term given to the condition characterized by facial pain

and restricted ability to open or move the jaw

TMJ – An abbreviation for the “Temporomandibular Joint”. This is the joint where your lower

jaw connects to your skull.

TMJD – (or Temporomandibular Joint Disorder); refers to the condition characterized by facial pain

and restricted ability to open or move the jaw