Change of Vickers Hardness by Cavity Depth by Kind of Visible Light-curing Units and Composite Resins
김주원, 정인호,
소속 상세정보
김주원 ( Kim Joo-Won ) - Sorabol College Department of Dental Hygiene
정인호 ( Jung In-Ho ) - Gimcheon University Department of Dental Technology
KMID : 1157520100060020047
Abstract
Objective: With result that observe several studies of ancient sages, we can know that element that get in contraction and hardness of composite resin is various. Therefore, in this study, select each one in QTH LCU, PAC LCU, LED LCU and select 3 in dental composite resin. and observing Vickers hardness by cavity depth, I wished to help that select visible light-curing unit and composite resin.
Materials and Method: Dental light curing units (LCU) that use in photo-polymerization are EXCELLED 2 (JOVIDENT, Germany), MONITEX LD-105 (FOMED DENTAL INC, Taiwan) and EXCELLED 2 (JOVIDENT, Germany) three kinds and dental composite resins that use in cavity restorations are Filtek Flowⓡ (3M-ESPE Co., USA), Filtek Supremeⓡ (3M-ESPE Co., USA) and CharmFilⓡ Plus (Dentkist, Korea) three kinds. Measurement machine that use in harness measurement is MVK-H1 (Akashi, Japan).
Results and Conclusion: 1. When used composite resin-Filtek Supremeⓡ and polymerized by visible light-curing units-Apollo 95 E, vickers hardness high appear on the whole. 2. When used visible light-curing units-EXCELLED2, vickers hardness by cavity depth was significance in all composite resin, but when it is composite resin, hardness change by cavity depth was less best. 3. When used Apollo 95 E, Vickers hardness by cavity depth did not appear significance in all composite resin. When used visible light-curing units-MONITEX LD-105, only Filtek Flowⓡ-composite resin significance in Vickers hardness by cavity depth, but Filtek Supremeⓡ and CharmFilⓡ plus-composite resin significance did not appear. 4. When uses all visible light-curing units and packed by composite resin of 3 kinds, significance appeared in Vickers hardness in surface (0 mm), middle (3 mm), base (6 mm) of cavity.
키워드
cavity; composite resin; Vickers hardness; visible light-curing units
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