Final answer:
Vinyl Polysiloxane (VPS) from Kettenbach is a silicone-based impression material used for bite registration in dental procedures, known for its precision and stability.
Step-by-step explanation:
The type of impression material from Kettenbach that is primarily used for bite registration is a silicone-based material known as Vinyl Polysiloxane (VPS). This material is favored for its ease of use, dimensional stability, and the high level of detail it captures, making it suitable for precisely recording the occlusal surfaces of teeth. VPS for bite registration typically comes in a malleable consistency which can be easily manipulated and placed between the dental arches to record the relationship between the upper and lower teeth.