Modern Ortho d'Art Mini Ceramic Bracket Kits are Poly Crystalline Mini Ceramic Bracket

Ceramic brackets are developed for esthetic purposes. Other esthetic materials have also been used—for example, plastics and polycarbonate-based materials.Ceramic brackets exhibit higher hardness and stiffness; however, they showed a higher incidence of fracture due to brittleness and aging in the oral environment. 

ADVANTAGES ON USING CERAMIC BRACKETS:

• Friction: Friction between a ceramic bracket and wire is much higher than that of a metal bracket
• Aesthetics: Ceramic brackets are aesthetic 
• Slim/Thin Brackets

METAL SLOT IN CERAMIC BRACKETS:

One of the modifications of ceramic brackets are ceramic brackets designed with a metal slot:-

• For improving sliding mechanics and to withstand higher torquing forces

Ceramic orthodontic brackets are made out of either polycrystalline or monocrystalline alumina (aluminum oxide, Al2O3)

• Polycrystalline brackets tend to have a more whitish (tooth-colored) look