Academic journal article American Academy of Gnathologic Orthopedics Journal

A Case from "A Manuel on Crozat Technic of Orthodontia"

Academic journal article American Academy of Gnathologic Orthopedics Journal

A Case from "A Manuel on Crozat Technic of Orthodontia"

Article excerpt

Bicuspid development 4 to 4

Start 32 mm.

Finish 40 mm.

Molar development 6 to 6

Start 41 mm.

Finish 50 mm.

A bilateral distrocclusion. This should mean only one thing. The upper first molars and both bicuspids of the upper arch are developed more than those in the lower arch. When these upper six teeth are in Pont's Index, put distal extensions on the body wire both upper and lower if necessary--at the same time upper and lower cuspids can be put into position. Arch development almost constantly follows the same pattern. Now when all development is finished, it is time to make the upper appliance passive. This is time for the high labial wire with its hooks. Use intermaxillary elastics until the upper posterior teeth are in anterior position balance with the lowers. Then is the time to bring the anterior teeth lingually--close all the molar and bicuspid teeth.

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Look over casts--notice how the bicuspids and molars have elongated--even the mesio buccal cusp of the upper six year molar has tipped occlusally. …

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