Orthodontic Assistant Practice Exam

Which instruments may be used for placing and removing elastic ligatures?

1. Scissors and pliers

2. Locking hemostat and scaler

3. Dental probes and explorers

4. Tweezers and forceps

The correct answer is: Locking hemostat and scaler

The use of locking hemostats and scalers is effective for placing and removing elastic ligatures due to their specific functionalities. Locking hemostats are designed to grasp and hold onto small objects firmly, which is essential when manipulating the elastic ligatures during placement and removal. The serrated jaws of the hemostat provide a secure grip, minimizing the risk of slipping and allowing for precision in handling. Scalers can also be beneficial as they allow for precise placement and removal by using their sharp edges to aid in separating the ligature from the bracket or wire. The combination of these two instruments provides a practical solution for working with the often delicate elastic ligatures, ensuring that the process is both efficient and effective. Other instruments like scissors and pliers are not ideal for this task as scissors are primarily for cutting rather than manipulating small elastic items, and pliers often lack the precision needed for delicate orthodontic work. Dental probes and explorers do not have the appropriate design for handling elastic ligatures specifically, as they are better suited for examining tooth surfaces and probing depths rather than for the grasping and manipulation required for ligatures. Tweezers and forceps could potentially be used, but they may not provide the locking mechanism that enhances the control necessary for