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KMID : 1157520090050030165
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International Journal of Clinical Preventive Dentistry
2009 Volume.5 No. 3 p.165 ~ p.176
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The mechanical properties of orthodontic resin according to the polymerization method and wire inserting technique
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Kim Hong-Sik
Kim Jung-Sook
Lee Eun-Kyoung
Jeong Mi-Kyoung
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Abstract
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Objectives: This study was performed for selecting the proper type of orthodontic resin for removable appliance.
Methods: 170 samples were produced with 3 types of orthodontic resin and inserting the wires with the different
diameters. Compressive strength and flexural strength were measured for every samples and SEM findings were performed at each sample surface of orthodontic resin.
Results: Orthocryl® resin or Ortho-jet® resin were revealed as the high in compressive strength and flexural
strength under the condition of polymerization in 40 temperature and 4 kg/cm2 pressure. Wire inserting samples were more strength than those without wire.
Conclusion: Orhocryl® resin, Ortho-jet® resin inserted with proper sized wire, polymerizing at 40 temperature and 4 kg/cm2 pressure was recommended to produce the removable type of orthodontic appliance in clinical.
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KEYWORD
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orthodontic resin, compressive strength, removable orthodontic appliance, polymerization condition of resin
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