ARCH

(redirected from lingual arch)
Also found in: Dictionary, Thesaurus, Medical, Legal, Encyclopedia.

ARCH

Autoregressive Conditional Heteroskedasticity

A statistical measure of the average error between a best fit line and actual data that uses past data to predict future performance. General Autoaggressive Conditional Heteroskedasticity is the most common way of doing this. See also: Fractal Distribution.
References in periodicals archive ?
A lingual arch space maintainer was used and then mandibular second primary molars were extracted.
The conclusions are that nothing is stable, but preserving the E space with a lingual arch is best in mixed dentition treatment.
The purpose of the present study was to present a successfully treated female patient having transposed and impacted lower canines by means of a modified lingual arch and fixed orthodontic appliance.