Fixation pins are added and treated the same way as implants. I can try to make a video soon. As for stackable guides, you'll have a hard time finding videos on that because that progress is patented and being litigated currently.

ah ok. thank you for taking the time! looking forward to your video!

I'd have to review the video, but the reason is typically because the BSB fully guided kit has an implant carrier with an offset of 8.5mm, 10.5 mm, or 12.5 mm. so, increasing by 2 mm or 4 mm will allow you to use the same carrier. The thing is, you then need to account for the drill differences well. For instance, if you are planning to place an 8 mm long implant, you would need to use the 10 mm drill if you increase the offset by 2 mm. If you had to increase it by 4 mm, you would actually need to use the 13 mm drill and stop one millimeters Shio full depth. It gets a little tricky when doing that to keep track of, but that's just the reality. The only other option would be for BlueSkyBio to sell three different sets of drills at the various offsets. That would take the kit to around $10,000.

Correct. This method requires 2 DICOM volumes. One of just the denture and one of the patient wearing the denture. The video linked at the very end shows that workflow with this same patient.

does the denture require a radiopaque acryl ? or only markers? if no how can we see it very clear on a regular 3d x-ray ?

It does not because you are scanning it alone. The relative radioopacity compared to air is high. Compared to a patient it's low. So, you won't be able to see it on the patient scan without also seeing the soft-tissue and a big mess.