What is the purpose of a contra/right angle attachment for a slow-speed handpiece?

The contra or right angle attachment for a slow-speed handpiece is designed specifically to hold burs that are used for various intraoral procedures. This attachment allows the dentist or dental assistant to reach difficult angles in the mouth while performing tasks such as the removal of decay, shaping teeth, or preparing cavities for restorative work.

Its design provides better visibility and maneuverability, which is essential in a confined space like the oral cavity. By utilizing this attachment, practitioners can effectively carry out restorative and operative procedures with precision and control, enhancing the overall quality of patient care.

In contrast, the other options refer to different functions or instruments used in dentistry. Administering anesthetics typically involves a syringe and not a handpiece attachment. Cleaning dental instruments is usually performed using ultrasonic cleaners or sterilization techniques, rather than a handpiece. Lastly, polishing teeth with a prophy angle is accomplished with a different type of attachment specifically designed for polishing rather than for cutting or shaping teeth.