A COMPARATIVE STUDY ON THE DISLODGING FORCE OF MAGNETIC ATTACHMENT TO THE DENTURE RESIN BY MAGNETIC DESIGN AND FIXING MATERIALS
이정화, 조인호, 이종혁,
소속 상세정보
이정화 ( Lee Jung-Hwa ) - 단국대학교 치과대학 치과보철학교실
조인호 ( Cho In-Ho ) - 단국대학교 치과대학 치과보철학교실
이종혁 ( Lee Jong-Hyuk ) - 단국대학교 치과대학 치과보철학교실
KMID : 0362420080460030261
Abstract
Statement of Problem: Detachment of the magnetic assembly from the denture base has been a problem in magnetic overdenture patients.
Purpose: The objectives of this study were to compare the dislodging force by the fixing materials and the designs of the magnetic assembly, and to compare the effect between the fixing materials and the designs of the magnetic assembly.
Material and Methods: Two fixing materials, Jet denture repair acrylic? and Super-Bond C&B? and two types of magnetic assembly designed with or without wing were used. Each magnetic assembly was fixed in the chamber of the denture base resin block (Lucitone?199) with each fixing material respectively. These specimens were thermocycled 2,000 cycles in the water held at 4℃ and 60℃ with a dwell time of 1 min each time. Each specimen was seated in a testing jig and then a push-out test was performed with a universal testing machine at a cross head speed of 0.5 mm/min to measure the maximum dislodging forces.
Results: Comparing the fixing materials, Super-Bond C&B? showed superior dislodging force than Jet denture repair acrylic?. Comparing the design of the magnetic assemblies, the wing design magnetic assembly showed better dislodging force. Combination of the Super-Bond C&B? as a fixing material and wing design magnetic assembly revealed a greatest dislodging force. The kind of fixing material was more influential than the type of magnetic assembly.
Conclusion: The dislodging force of Super-Bond C&B? was significantly higher than Jet denture repair acrylic?. And the dislodging force of magnetic assembly which have wing design was significantly higher than magnetic assembly which have no wing design.
키워드
Magnetic assembly;Denture base;Fixing material;Design of magnetic assembly;Dislodging force
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