All the following are considered esthetic restorations except for which?

The complete cast crown is primarily designed for strength and durability rather than aesthetics. This type of crown is typically made entirely from metal, which does not mimic the appearance of natural tooth structure, making it less suitable for visible areas in the mouth.

In contrast, metal ceramic crowns and partial veneer crowns incorporate aesthetic materials that can resemble the natural tooth color and translucency. Composite bonding also emphasizes aesthetics as it involves applying a tooth-colored resin that can be shaped and polished to match the appearance of surrounding teeth.

Thus, the complete cast crown stands out as the option that does not fall under the category of esthetic restorations due to its functional, rather than aesthetic, design objective.