Which instrument is used to reflect light and provide indirect vision in the oral cavity?

• A. Flat plastic
• B. Mouth mirror
• C. Right angle probe
• D. Amalgam plugger

Answer: (B)

A mouth mirror is used to reflect light and provide indirect vision in the oral cavity. The small reflective surface lets you see areas that aren’t directly visible, such as the backs of teeth, the lingual surfaces, and the posterior regions, by directing light and the image toward your eyes. It also helps retract cheeks, lips, and the tongue to improve access and visibility, making dental examination and procedures safer and more comfortable. The other instruments shown serve different purposes: a tool with a flat plastic tip isn’t used for indirect vision or illumination, a right-angle probe is for exploring and measuring pockets, and an amalgam plugger is for condensing restorative material.