A wire engaged in orthodontic attachments, affixed to the crowns of two or more teeth and capable of causing or guiding tooth movement.

band (orthodontic)

A thin metal ring, usually stainless steel, which serves to secure orthodontic attachments to a tooth. The band, with orthodontic attachments welded or soldered to it, is custom fitted and closely adapted to fit the contours of the tooth and then cemented into place.


An orthodontic attachment that is secured to a tooth (either by bonding or banding) for the purpose of engaging an archwire. Brackets can be fabricated from metal, ceramic or plastic.

ceramic brackets

Crystalline, alumina, tooth-shade or clear synthetic sapphire brackets that are aesthetically more attractive than conventional metal attachments.


Dental malalignment caused by inadequate space for the teeth.


The removal of cemented orthodontic bands.

elastics (rubber bands)

Used to move teeth in prescribed direction (commonly connected to molar band and upper ball hook) to correct underbites or overbites


The tissue that surrounds the teeth, consisting of a fibrous tissue that is continuous with the periodontal ligament and mucosal covering.


Generic term for extraoral traction (attached around the back side of the head) for growth modification, tooth movement and anchorage.

Herbst appliance

Fixed or removable appliance designed commonly for overbite problems and more.


The process of acquiring representations of tooth and jaw structures in either two or three dimensions.


Of or pertaining to the tongue. A term used to describe surfaces and directions toward the tongue.

lingual appliances

Orthodontic appliances fixed to the lingual surface of the teeth.


Of or pertaining to the upper jaw. May be used to describe teeth, dental restorations, orthodontic appliances or facial structures.


A dental specialist who has completed an advanced post-doctoral course, accredited by the Canadian and American Dental Associations, of at least two academic years in the special area of orthodontics.  Most orthodontic specialists have practised as a dentist for a period of time prior to returning to university for the additional training required to become an orthodontist.

orthognathic surgery

Surgery to alter relationships of teeth and/or supporting bones, usually accomplished in conjunction with orthodontic therapy.


Vertical overlapping of the upper front teeth over the lower front teeth, usually measured perpendicular to the occlusal plane.


Horizontal projection of the upper front teeth beyond the position of the lower front teeth, usually measured parallel to the occlusal plane. 


A permanent image produced by ionizing radiation. Sometimes called an X-ray after the most common source of image-producing radiation. Our office uses digital radiography which allows some reduction in the amount of radiation and reduces the environmental impact common to older technology due to the fact that no chemicals are needed to process the x-ray images


Any orthodontic appliance, fixed or removable, used to maintain the position of the teeth at the completion of corrective treatment.


The passive treatment period following active orthodontic correction during which retaining appliances are used.

Paul A. Witt, DDS, Dip Ortho, FRCD(C) | 201- 4906 Delta St. | Delta [Ladner], BC Canada V4K 2V2 | 604.946.9771 | 604.946.9702
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