The effects of using modified tip-back springs on uprighting mesially inclined mandibualr molars
碩士 === 長庚大學 === 顱顏口腔醫學研究所 === 95 === Using tip-back mechanics for molar uprighting frequently happenes undesirable molar extrusion. Crossed tip-back springs emphasize that the vertical force can cancel each other out by activating the two spring equally. The purposes of the present study are to eval...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/28051970391288965866 |