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- W2352963485 abstract "Objective:To assess the feasibility of using electronic speckle pattern interferometry(ESPI) as a viable technique for measurements of composite volumetric changes due to polymerization. Methods:9 freshly extracted human mandibular first molars were collected and Class I cavities with diameter of 5 mm and depth of 4mm were prepared in the middle of occlusal surfaces respectively. The teeth were divided into three groups: cavities treated with separating medium (group A), bonding system(group B) or no treatment, and then Filtek Z350 was filled in the cavities and the axial shrinkage was measured using ESPI immediately after light cured for 40 s under 400 mW/cm2. Results:The ESPI technique was sensitive to dimensional changes of the dental composite. The bonded composite restorations showed a maximum deformation in the occlusal surface area, while the separating medium group demonstrated a minimum displacement. Conclusion:ESPI is a viable method for assessing linear polymerization shrinkage of dental composite. Cavities treated with different methods may cause variation of polymerization shrinkage in composite restorations." @default.
- W2352963485 created "2016-06-24" @default.
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- W2352963485 date "2008-01-01" @default.
- W2352963485 modified "2023-09-26" @default.
- W2352963485 title "Application of ESPI for measuring polymerization shrinkage of light cured dental composites" @default.
- W2352963485 hasPublicationYear "2008" @default.
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