Bimaxillary Protrusion
A skeletal or dentoalveolar condition in which both the maxillary and mandibular dental arches and/or jaws are positioned anterior to the facial reference planes.
Full Definition
Bimaxillary protrusion refers to the forward positioning of both jaws (skeletal form) or both sets of anterior teeth and their supporting alveolar bone (dentoalveolar form) relative to accepted craniofacial norms. It is particularly prevalent in certain ethnic populations and often presents with convex facial profiles, proclined incisors, and lip incompetence. Editors must note that the term is a compound adjective and should be hyphenated ('bimaxillary protrusion' is correct as a noun phrase; 'bimaxillary-protrusion case' when used attributively). It should not be confused with dentoalveolar protrusion, which is limited to the teeth and alveolus.
Usage
Usage note: Do not conflate with dentoalveolar protrusion. When used attributively, hyphenate: 'bimaxillary-protrusion treatment'.
In Context
- "Treatment planning for bimaxillary protrusion typically involves extraction of four premolars to allow incisor retraction." — Treatment planning document
- "The editor queried whether 'biprotrusion' and 'bimaxillary protrusion' were being used interchangeably throughout the manuscript." — Manuscript review