Abstract
The purpose of this study was to investigate the gingival color changes of the previous child stage that appear in periodontal diseases. Maxillary anterior gingiva of 109 children with clinical normal gingiva who were from 3 to 14 years old and 21 young adults, who were from 18 to 28 years old were chromatically measuredusing the light guided color difference meter CD-270 (Murakami color research laboratory).
The results were as follows.
1) Joining the image fiber with the color difference meter improved reappearance and clinically color measurement was easily possible.
2) The measurement data of the stage classification showed fall peak on data L* and showed in increase on data a* in the mixed dentition stage. However, that was no much change on the data b* at all stages.
3) The measurement data of the stage classification showed lower value at the attached gingiva compared with the papilla and marginal gingiva on data L*. In the opposite direction, it showed a higher value at the attached gingiva on data a*. The difference between the marginal gingiva and the attached gingiva was scarcely show on data b*.
4) As for disparity according to sex, in the primary dentition stage data a* showed a higher value with women compared to men. The color difference did not show in the mixed dentition stage. Also data L* showed a higher value with men in the parmanent dentition stage.
