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논문 기본 정보

자료유형
학술저널
저자정보
문주훈 (조선대학교 치과대학 치과보존학교실) 최의환 (조선대학교 치과대학 구강악안면방사선교실)
저널정보
대한영상치의학회 대한구강악안면방사선학회지 대한구강악안면방사선학회지 제30권 제4호
발행연도
2000.1
수록면
243 - 248 (6page)

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초록· 키워드

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Purpose: The aim of this study was to determine the relative radiopacities of cavity lining materials (Resin-modified Glass Ionomer cement, Compomer and Plowable resin) for posterior composite resin restoration. Material & Methods: Resin-modified glass ionomer cement (Fuji II LC, Vitrebond<SUP>TM</SUP>), Compomers (Dyract <SUP>(R)</SUP> Compoglass, F2,000, Dyract<SUP>(R)</SUP> flow Compoglass Flow) and Flowable resins (Tetric<SUP>(R)</SUP> flow, Aeliteflo<SUP>TM</SUP> Revolution<SUP>TM</SUP>) were used. Five specimens of 5 mm in diameter and 2 mm thick were fabricated with each material. Human molars were horizontally sectioned 2 mm thick to include both enamel and dentin. The radiopacities of enamel, dentin, cavity lining materials, aluminum step wedge were obtainded from conventional radiograph and NIH image program. Results: All the tested lining materials showed levels of radiopacity the same as or greater than that of dentin. All compomer tested (Dyract, Compoglass, F2,000, Dyract flow, Compoglass Flow) and Vitrebond<SUP>TM</SUP>, Tetric<SUP>(R)</SUP> flow were more radiopaque than enamel. The radiopacities of Fuji II LC and Revolution<SUP>TM</SUP> were between enamel and dentin and resin-modified glass ionomer cement, Compomer and Tetric<SUP>(R)</SUP> flow were greater than those of Revolution<SUP>TM</SUP>, Aeliteflo<SUP>TM</SUP> or dentin. The level of radiopacity of the tested materials was variable; those with low radiopacity should be avoided in class II restorations, where a clear determination of recurrent caries by the examining clinician could be compromised. Conclusion: Clinician should be able to distinguish these cavity lining materials radiographically from recurrent decay, voids, gaps, or other defects that lead to clinical failure. Utilization of materials ranked more radiopaque than enamel would enable clinicians to distinguish the lining material from tooth structure.

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