Color Change of Newly Developed Esthetic Restorative Material Immersed in Food-simulating Solutions

  • FUJITA Megumi
    Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University, Graduate School of Dental Medicine
  • KAWAKAMI Susumu
    Division for Oral Rehabilitation, Centre for Dental Clinics, Hokkaido University Hospital
  • NODA Mamoru
    Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University, Graduate School of Dental Medicine
  • SANO Hidehiko
    Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University, Graduate School of Dental Medicine

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Description

Recently, an esthetic tooth coating material has been developed. The material consisted of a primer solution, a base coat, and a top coat. The purpose of this study, therefore, was to evaluate the color change of this tooth coating material and two resin composites after immersion in food-simulating, staining solutions. To this end, the newly developed coating material with and without its top coat, a flowable resin composite, and a hybrid resin composite were employed for the evaluation.<BR> The specimens were subjected to an experimental 24-hour staining cycle: 7-hour immersion in coffee, green tea or red wine, then 17-hour immersion in artificial saliva solution containing 0.3% mucin. After 24 hours, 3 days, 1, 2, and 4 weeks of immersion, the color changes of all specimen surfaces were measured.<BR> Compared with the other materials, the ΔE* value of coating material without its top coat tended to increase as the immersion period increased until 4 weeks. On the other hand, the ΔE* value of coating material with its top coat measured the lowest among the materials tested. Based on the results obtained, it was concluded that when using this recently developed tooth coating material in dental clinics, its top coat should be properly applied.

Journal

  • Dental Materials Journal

    Dental Materials Journal 25 (2), 352-359, 2006

    The Japanese Society for Dental Materials and Devices

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