Korean J Orthod.  1991 Nov;21(3):481-493.

A morphologic study on straight wire bracket for Korean

  • 1Department of Orthodontics, Dental College, Yonsei University, Korea.


The purpose of this study was to obtain the norm of the crown shape (tip, torque, in/out) and arch form, and to provide basic data for fabricating straight wire bracket and ideal arch wire for Korean. 100 subjects aged from 17 to 26 (50 females, 50 males) were selected with a normal occlusion. By measuring the size, angulation, inclination, arch width, facial prominance of the teeth and the molar offset, the following results were obtained. 1. Average, standard deviation, minimum, maximum of each measuring item for each teeth were obtained. 2. Intermolar width (6 to 6) of upper arch before occlusal surface cutting and intermolar width of upper arch (6 to 6, 7 to 7) after occlusal surface cutting showed statistical difference. There was no difference between sexes in any other measuring items. 3. Arch form and specification of straight wire bracket for Korean who have normal occlusion was obtained.

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