Reproducibility and comparison between methods for gingival color evaluation

Aim: This study aims to evaluate and validate the sensibility level of agreement between different gingival color measures obtained by a spectrophotometer (SPECTRO) photography (PHOTO) method. Methods: Among 40 patients, was measured 2 mm apical margin CIE L*, a*, b* system using reflectance photography’s plus software. The three (m1, m2, m3) in parameters b*, ΔE (color variation) evaluated random systematic errors, as well limits coefficient concordance. A comparison methods performed Bland-Altman test accordingly ΔE: 3.7 thresholds with p<0.05 significance for these comparisons. Results: SPECTRO method has not presented error (p>0.05) had reproducibly variable L* (r: 0.6), a* 0.3), 0.5) PHOTO 0.5), which values (p<0.05). means measurements were: 6.5 5.9 PHOTO. There no good sensitivity ΔE> methods, mainly values. On other hand, most comparisons values, higher. Conclusion: Both could quantify from coordinates L *, b shown greater reliability acquired