Face Mask

This is an extra-oral appliance that was developed by J. Delaire and H. Petit in France and is used for the treatment of mandibular protrusion (lower jaw overbite). See Delaire-Mask

Facial

Belonging to the face

Fenestration

In dentistry this term refers to the local absence of the bony layer over a part of the tooth root in the form of a crater.

Fissure

In dentistry this term refers to the deep grooves and indentations of the chewing surfaces of the posterior teeth. In the fissures, caries is easily formed in childhood and adolescence.

Fixed Brace

The fixed brace, also called Multi-bracket-or MB-Appliance consists of brackets that are stuck on and sometimes also bands that are cemented in place, wires and other elements. The MB-appliance is ...

Fixed retainer

Broadly speaking, a retainer is just a brace that is used to stabilise the teeth following orthodontic treatment. The name comes from the verb ‘to retain’ which means to grip. There ...

FKO

Abbreviation for functional orthodontics – see there

Fluorides

Fluorides are salts of the element fluorine and occur naturally in different concentrations in water. Because of their caries-inhibiting effect, fluorides are used in dentistry in toothpastes, ...

FMA

See Functional mandibular advancer

Forsus Spring

The Forsus Spring is one of the numerous Herbst-clones that are based on the Herbst-Appliance. It is a forward-acting appliance that is used for the treatment of the retruded lower jaw. The ...

Forward-Pressure Double Plate

This is one of the latest and probably most effective advancements on the numerous double plates. In principle, these are offset activators split into two parts for the upper jaw and ...

Frenulae

Frenulae are fine and membranous structures composed of connective tissue which connect the buccal mucosa with the mucosa covering the jawbone. Sometimes they extend directly into the gingiva. ...

FRS

This is the abbreviation for a cephalogram which is a side-view X-ray of the skull. Unfortunately, this is normally described as a side-view FRS in German (Fernröntgenbild), which has ...

Function regulator according to Fränkel

The function regulator according to Fränkel is a so-called functional orthodontic appliance and is used for moving the bite where there is a retrusive occlusion (function regulator II) or ...

Functional diagnostics

Functional diagnostics of the chewing system, which may include the meeting of the arches in statics and dynamics - the occlusion - the condition of the temporomandibular joints and chewing muscles ...

Functional mandibular advancer

The functional mandibular advancer, abbreviated FMA, is based on the MARA device and is a fixed appliance for moving the bite where there is a retrusive occlusion in the lower jaw (distal ...

Functional orthodontics

An orthodontic treatment strategy published around 1935 by Andresen and Häupl with so-called functional orthodontic appliances such as the activator. The concept is to influence facial growth by ...