What type of chisel is characterized by having a curved blade?

The Wedelstaedt chisel is characterized by its curved blade, which differentiates it from other types of dental chisels. This specific design allows for greater precision and better access in areas of the tooth that may be difficult to reach with straight-edged instruments. The curvature helps in shaping and refining cavities, providing a more controlled action when removing dental material or adapting restorative materials.

The other tools listed, while useful in various dental procedures, do not have the distinctive curved blade that defines the Wedelstaedt chisel. For instance, the binangle chisel has two angles to facilitate the cutting action, the angle former is typically used for creating retentive features in cavity preparations, and the spoon excavator is more commonly employed for excavating carious dentin due to its bowl-shaped design. None of these tools exhibit the same curvature that is a hallmark of the Wedelstaedt chisel, allowing it to excel in its specific applications.