Evaluating The Gloss of Three Manufactured Anterior Pedodontic Zirconia Crowns

Method: The gloss of pedodontic anterior zirconia crowns from 3 pedodontic manufacturers (NuSmile, EZ Pedo and Kinder Krowns) was measured using a Novo-Curve gloss meter.  The crowns were placed on the aperture of the gloss meter with the facial and lingual surfaces exposed to the light beam and covered with a black cap to prevent outside light from entering the evaluation field. Three values for each crown surface (facial and lingual) were taken for each of the samples, and averaged. Data were analyzed using one-way ANOVA and Tukey post hoc test at the 0.05 level of significance.

Result: The results of ANOVA showed significant main effects for crown type (p<0.01) and crown surface (p<0.01). A significant interaction between crown surface and crown type was also shown (p<0.001).

Conclusion: There were significant differences in mean gloss among the three crown types  (p=0.01) with NuSmile pediatric crowns showing the highest gloss followed by EZ Pedo and Kinder Krowns. The mean gloss among groups was highest on the lingual surfaces (p<0.01).