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KMID : 0361919930230040485
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Korean Journal of Orthodontics
1993 Volume.23 No. 4 p.485 ~ p.492
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A photoelastic study of the effect of loops in arch wire and orthodontic elastics in relief of curve of spee
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Abstract
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Multiloop Edgewise Archwire(MEAW) is effective in relief the Curve of Spee in mandibular arch but up & down orthodontic elastics must be used with it. The purpose of this study was to analyse the effect of orthodontic elastics, like as up & down
elastics, Class II elastics, and Class III elastics, and the effect of L loop in Multioop Edgewise Archwire.
1. Intrusive force of MEAW in anterior teeth was reduced and uprighting force in premolars was increased by up & down elastics.
2. Uprighting force was significantly increased with Class III elastics in multiple L loop arch wire.
3. The force of Class II elastics made molars tip mesially and Curve of Spee deep.
KOREA J. ORTHOD 1993 ; 23(4) : 485-492.
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