melasma is a common acquired skin disorder. while different treatments are currently being used, in many cases it is refractory to treatment. according to the effects of topical steroids in decreasing skin pigmentation, we studied the efficacy of this new method for treatment of melasma. a total of 42 women with facial melasma, admitted to the department of dermatology of hamadan, were enrolled...

statement of the problem: by introducing the coloring liquids, it is claimed that it is possible to make the color of frameworks fabricated from zirconium oxide extremely close to the natural tooth color. purpose: the purpose of this research was to evaluate the effect of two staining techniques on value changing in zirconia crowns. materials and method: three groups a, b, and c, each containin...