Thanks for your kind words!
Let’s look at Ceramir first. Ivoclean does not need to be used with Ceramir, but it won’t hurt anything if you do use it. As Ceramir does not need phosphates to bond to BruxZir, there is no need to remove the salivary phosphates in order to replace them with the phosphates in the zirconia primer. The same holds true for IPS e.max, PFM and gold: There’s no need for Ivoclean or any sort of silane or primer with Ceramir.
For RelyX Ultimate, we need to use Ivoclean to remove the salivary phosphates from the internal portion of the crown; or with BruxZir, PFM or gold crowns, we can sandblast with a 50-micron alumina oxide particle for 15 seconds instead. Because sandblasting is contraindicated for IPS e.max, we are limited to using the Ivoclean. After removing the phosphates, we are going to place a primer. Use a zirconia primer, such as Scotchbond Universal Adhesive or Z-PRIME Plus, for BruxZir crowns; use a ceramic-silane primer, such as Scotchbond Universal Adhesive or RelyX Ceramic Primer, for IPS e.max crowns; and use Z-PRIME Plus or Monobond Plus as a metal primer. Monobond Plus will also work for both all-ceramic materials because it contains a zirconia primer and a ceramic silane in the same bottle.
As you mentioned, RelyX Ultimate allows you to not etch at all, selectively etch the enamel, or etch the whole prep based on retention needs. Nonretentive preps such as veneers, Maryland bridges, inlay bridges or onlay bridges definitely need the whole prep to be etched.
You are now going to place the primer. For example, with Scotchbond Universal Adhesive, place it on the prep surface with a brush and agitate it for 20 seconds. Use a gentle stream of air for five seconds to evaporate the solvent, and then, because this is an indirect restoration, don’t cure the Scotchbond Universal Adhesive yet. Place the RelyX Ultimate in the crown and seat it. You can either clean it up before curing or place glycerin on the margins while curing to prevent the 50-micron air-inhibited layer. This is more work, but most feel it leads to a more esthetic result. Conversely, you can also spot-cure the cement for a second or two and begin to clean it up that way, as most dentists do.
So, Dan, that’s my long-winded way of telling you that you are doing exactly what you are supposed to be doing. Keep up the good work!