ARCH

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Related to arch length: Arc length

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 ?
Estimating arch length discrepancy through Little's Irregularity Index for epidemiological use.
Detailed medical and dental history, clinical and radiographic examination of both the jaws and tooth-size arch length analysis will bring us to a correct diagnosis.
He showed that arch length typically decreases with time from the mixed dentition through the transitional dentition and into early adulthood.
Leveling the curve of Spee: its effectson the mandibular arch length.
A three-dimensional anatomic maxillary model was constructed with photoelastic materials from a pretreatment clinical model of an early mixed dentition with deficient arch length.
Lateral-line arch length was the distance between anterior and posterior flexion points, and this straight line was used as the base for the depth measurement.
Bolton tooth size ratio and its relation with arch widths, arch length and arch perimeter: a cone beam computed tomography (CBCT) study.
Considering the position of the ectopically erupted incisor and the insufficient arch length, it seemed difficult to bring the maxillary central incisor into the dental arch.
Dental arch dimensions include arch length, width and depth have profound implications in orthodontic diagnosis and treatment planning; affecting the space available, dental aesthetics, and stability of the dentition.
A concordance was found between the sizes of the deciduous second molars with the size of the permanent first molars, this might be helpful in prediction for arch length discrepancy.
Dental anomalies in tooth number, shape, structure, and position may lead to problems in arch length and occlusion.