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The migration of a tooth from its normal position in the dental arch. Drifting may be due to periodontal disease, loss of proximal support, loss of a functional opposing tooth, traumatic occlusal tooth relationships, or oral habits such as digit sucking. The extraction of a primary canine or molar may cause mesial drift of teeth distal to the space and distal drift of anterior teeth, with resultant displacement of permanent teeth and a movement of the centreline. See also space maintainer.

Subjects: Dentistry.

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