The mechanical properties of orthodontic resin according to the polymerization method and wire inserting technique
김홍식, 김정숙, 이은경, 정미경,
소속 상세정보
김홍식 ( Kim Hong-Sik ) - Gimcheon College Department of Dental Laboratory Technology
김정숙 ( Kim Jung-Sook ) - Daejeon Health Science College Department of Dental Laboratory Technology
이은경 ( Lee Eun-Kyoung ) - Choonhae College of Health Sciences Department of Dental Hygiene
정미경 ( Jeong Mi-Kyoung ) - Jinju Health College Department of Dental Hygiene
KMID : 1157520090050030165
Abstract
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.
키워드
orthodontic resin; compressive strength; removable orthodontic appliance; polymerization condition of resin
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