| JOURNAL OF OSAKA DENTAL UNIVERSITY | |
| Vol. 41 No. 2 OCTOBER - 2007 | |
| ISSN: 0475-2058 UBIC: 172 | |
SUMMARY |
|
| In clinical orthodontics, the headgear is used to treat maxillary protrusion, while the chin cap and maxillary
protractor are used to treat mandibular protrusion. These devices use orthopedic force to improve jaw discrepancies. Research on these
appliances that produce orthopedic force often analyzes the position of the center of resistance and of the center of rotation in the
maxillofacial complex. How orthopedic forces affect maxillary and mandibular rotations depends on the location of the pulling force relative
to the center of resistance. Past research methods have been very complex. Because simulation models were rarely used, the accurate centers
of resistance and rotation were not obtained. We applied random dot moiré patterns to cephalometric radiographs to develop a simple method
of pinpointing the center of rotation. (J Osaka Dent Univ 2007 ; 41 : 107-110)
Key words: Orthopedic force; Center of rotation; Orthodontic diagnosis. |
|
|
| Volver | |
|