Which of the following is a type of flange-type evacuator?

The correct response indicates that both the Svedopter and the Speejector fall under the category of flange-type evacuators. Flange-type evacuators are dental instruments specifically designed for suction and evacuation purposes during various dental procedures. These devices typically feature a flange that helps create a sealed area around the tooth or surgical site, effectively capturing fluids and debris.

The Svedopter offers an efficient way to manage oral fluids, thanks to its unique design that allows for easy access and suction in different areas of the mouth. Similarly, the Speejector serves a parallel function, providing effective suction while minimizing patient discomfort. Both instruments share this core functionality, qualifying them as types of flange-type evacuators.

Given this understanding, it's clear that a choice emphasizing both the Svedopter and the Speejector as types of flange-type evacuators is accurate, supporting the selected answer.