Not dental-specific, but some techs are using Blender + add-ons on a Mac, then using iPad as a second display via Sidecar. Still requires a Mac.
Since the core exocad software is and requires a dedicated NVIDIA or AMD GPU, you cannot install the design suite directly on iPadOS. However, you can "stream" exocad from a powerful PC to your iPad using remote desktop software. Recommended Remote Apps exocad on ipad