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논문 기본 정보

자료유형
학술저널
저자정보
Hyung-Min Kim (Department of Dental Hygiene College of Health Science Eulji University Seongnam 13135 Korea) Moon-Jin Jeong (Department of Oral Histology and Developmental Biology School of Dentistry Chosun University Gwangju 61452 Korea) Hee-Jung Lim (Department of Dental Hygiene College of Health Science Eulji University Seongnam 13135 Korea) Do-Seon Lim (Department of Dental Hygiene College of Health Science Eulji University Seongnam 13135 Korea)
저널정보
한국치위생과학회 치위생과학회지 치위생과학회지 제23권 제2호
발행연도
2023.6
수록면
123 - 131 (9page)

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Background: As a restorative material used to treat dental caries, the light-curing type resin is widely used, but it has the disadvantage of polymerization shrinkage. The Bulk-Fill composite resin was developed to solve these shortcomings, but the existing research mainly focused on comparing the physical properties of a composite resin and a Bulk-Fill resin. A study on the light curing time and distance of the Bulk-Fill resin itself tend to be lacking.Methods: This study compares the surface microhardness of specimens prepared by varying the light curing time and distance of smart dentin replacement (SDR) as a flowable Bulk-Fill resin and Tetric N-ceram as a packable Bulk-Fill resin, and confirms the polymerization time and distance that becomes the optimum hardness. To determine the hardness of the specimen, it was measured using the Vickers Hardness Number (Matsuzawa MMT-X, Japan). Results: In SDR, the surface microhardness decreased as the distance increased in all time groups in the change distance from the curing tip. In the change of light curing time with respect to the distance from curing tip, the surface microhardness increased as the time increased. In Tetric N-ceram, the surface microharness showed no significant difference in the change of the distance of curing tip in the group of 20 and 60 second. But in the group of 10 and 40 seconds, decreased as the distance increased. The surface microharness increased as the light curing time increased in all distance groups. Conclusion: When using SDR and Tetric N-ceram in clinical practice, it is considered that as the distance from the polymerization reactor tip increases, a longer light curing time than the polymerization time recommended by the manufacturer is required.

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