Most often, the cause of impaction is inadequate arch length and space in which to erupt.

Cases which present with arch length deficiency - indicated by the presence of one or more of the following:

Combined width of the permanent teeth is taken from intraoral radiographs and compared with the available arch length.

It is dark and cool with puddles of muddy water below arched lengths of rock, bolted into place for safety.

He looked along the barrel of his blaster, down the arched length of the room to the rest of the suite.

You have all admired the sleekness of its hide, the arched length of its neck, the full-flesh of its flanks.

For every 1 degree of labial or lingual tipping of the mandibular incisors there is 0.8 mm of respective increase or decrease in arch length.

Kneeling in front of us, spreading her black-polished fingernails open on either side of herself and leaning back, looking down the arched length of her torso at us, she says, "What?"

Assessment of the tooth size - arch length relationship in the mixed dentition determines the presence or absence of any future or existing discrepancy, whether it is crowding or spacing.

The amount of crowding, the arch length requirements, whether they are symmetric, and the state of health of the investing tissues are factors that continually impact the occlusal guidance program.

It includes assessment of tooth mass, arch form, arch length, skeletal pattern, skeletal growth potential, orofacial musculature, facial aesthetics, oral habits and hereditary assessment of parents and siblings.

Ms. Trager pushes its fetishistic possibilities in "Betrayal," a 20-foot-long plait of white wool suspended from the gallery's ceiling, and in "Disturbance," a short, arched length of dark braided wool that sits in the middle of the floor.