The Necessity of a Facebow Mounted Cast for Routine Single Crowns

Situation: Let’s assume that we are looking at a patient that has already been equilibrated. The patient is nonsymptomatic and my assumption is that we have gone ahead and verified that the occlusion is stable. Now you have a single crown to do.

What do you need to do?

If just a single crown is required, the only thing we have to do is make sure that the patient hits with equal intensity contact all the way around the mouth.

Since this patient is already in centric relation, it is basically an MI case.

The second thing you have to make sure is the patient will not be able to rub on the single crown in protrusive, working or balancing. So in this situation, the benefit of working with a facebow-mounted model is the laboratory will be able to work out all the excursive movements for us.

Since it’s a single unit, if you want to use a simple mounting, just remember that when you go to the mouth they’re using a little clamp articulator. The excursive movements that were previously mentioned cannot be seen on that articulator.

What does that mean?

It means that in the mouth, you’ve got to be really aware and look very, very closely, and adjust any of those incline interferences when going into protrusive, working or balancing.