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Dentofacial Orthopedics Glossary

105 terms total — 24 showing — Last updated 15 Sep 2026

Functional Matrix Theory

Professional Formal IVT

A developmental theory proposing that the growth of skeletal structures is driven by the functional demands of the soft-tissue matrices they support or protect.

Showing 49–72 of 105

Le Fort I Osteotomy

Professional Formal IVT

A surgical procedure in which the maxilla is separated from the skull base at a horizontal plane above the tooth roots a...

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Lip Bumper

Basic Semi-formal IVT

A removable intraoral arch wire device that holds the lips and cheeks away from the teeth to reduce the muscular pressur...

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Lip Competence

Intermediate Technical IVT

The ability to achieve an anterior oral seal with the lips in a relaxed, natural posture, without muscular strain.

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Malocclusion

Intermediate Technical IVT

Any deviation from the ideal alignment and occlusal relationship of the upper and lower teeth, classified by Angle's cla...

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Mandibular Plane Angle

Advanced Technical IVT

A cephalometric measurement of the steepness of the lower jaw's inferior border relative to a cranial base reference pla...

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Mandibular Symphysis

Intermediate Technical IVT

The midline fibrocartilaginous junction of the two halves of the mandible that fuses during early childhood, forming the...

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Maxillary Deficiency

Intermediate Technical IVT

A skeletal condition in which the maxilla is underdeveloped or posteriorly positioned relative to the cranial base, typi...

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Maxillary Excess

Intermediate Technical IVT

A skeletal condition in which the maxilla is positioned or developed beyond normal limits in the sagittal, vertical, or...

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Menton

Advanced Technical IVT

The most inferior point on the mandibular symphysis in the midsagittal plane, used as a landmark in cephalometric and fa...

Me
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Mesialization

Intermediate Technical IVT

The orthodontic movement of a tooth or teeth in a mesial (anterior) direction along the dental arch.

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Midpalatal Suture

Advanced Technical IVT

The fibrous joint that unites the two palatal bones at the midline of the hard palate, targeted during palatal expansion...

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Nance Holding Arch

Intermediate Technical IVT

A fixed space-maintenance appliance consisting of bands on the upper first molars connected by a wire that rests against...

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Nasion

Intermediate Technical IVT

The most anterior point of the nasofrontal suture, used as a landmark in cephalometric tracing.

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Nasolabial Angle

Intermediate Technical IVT

The angle formed at the junction of the columella of the nose and the upper lip, used to assess soft-tissue harmony in p...

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Open Bite

Basic Technical IVT

A malocclusion characterised by a lack of vertical overlap between opposing teeth, most commonly the anterior teeth, res...

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OPG

Basic Technical IVT

Abbreviation for orthopantomogram; the standard panoramic dental radiograph used in orthodontic record-taking.

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Orbitale

Intermediate Technical IVT

The most inferior point on the lower margin of the bony orbit, serving as one of the two reference points defining the F...

Or
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Orthognathic Surgery

Advanced Technical IVT

Surgical repositioning of the maxilla, mandible, or both to correct significant skeletal discrepancies that cannot be ma...

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Orthopedic Force

Intermediate Technical IVT

A heavy, intermittent or sustained force applied to the dentofacial skeleton with the intention of modifying bone or sut...

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Overbite

Intermediate Technical IVT

The vertical overlap of the upper incisors over the lower incisors when the teeth are in maximum intercuspation.

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Overjet

Intermediate Technical IVT

The horizontal distance between the labial surface of the upper incisor and the labial surface of the lower incisor, mea...

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Panoramic Radiograph

Basic Technical IVT

A single extraoral dental X-ray image that depicts both dental arches, the alveolar bone, and associated craniofacial st...

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Peer Assessment Rating

Professional Technical IVT

A validated index used to quantify the degree of malocclusion and the outcome of orthodontic treatment by scoring occlus...

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Pendulum Appliance

Advanced Technical IVT

A fixed intraoral device that uses nickel-titanium coil springs anchored to the palate to distalize (move posteriorly) t...

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Showing 49–72 of 105

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