Itero model w/analog

[PDC]

Thought some might be interested in seeing what these looked like.









Light cured Primotec gel on abutment.

 

[2000markpeters]

We have done hundreds of these, and our chief complaint is the inaccuracy of the tissue area around the implant. Every model is milled the same, and when you receive a custom abutment you have to ream the area around the analog off every time. They just cannot seem to mill what is shown on the scan. Also you cannot use the system if your dentist wants to use a modified tissue impression coping. Bummer....

 

[doug]

Well, the doc needs to know the limits of his/her system. You don't know how many times I've had to remind them of things that can't be done with their digital impression

 

[sidesh0wb0b]

Thanks PDC
How do you like the primotec gel? I used it a few times but wasn't super impressed, though I constantly hear folks say they love it

 

[rkm rdt]

Well, the doc needs to know the limits of his/her system. You don't know how many times I've had to remind them of things that can't be done with their digital impression

such as?

 

[rkm rdt]

?

 

[PDC]

Thanks PDC
How do you like the primotec gel? I used it a few times but wasn't super impressed, though I constantly hear folks say they love it

I really like it. I use it for a variety of things. It works better for me on the metal abutments than trying to wax them. You have to put a couple of coats of rubber sep on the abutment before using the gel. The fits come out great. I also use it for covering the access hole to the screw on abutments. Sometimes I use it for connectors on bridge waxups. I also use for duplicating clasps of partials in blue mousse bites when the patient want give up their partial. Lots of uses.

 

[PDC]

We have done hundreds of these, and our chief complaint is the inaccuracy of the tissue area around the implant. Every model is milled the same, and when you receive a custom abutment you have to ream the area around the analog off every time. They just cannot seem to mill what is shown on the scan. Also you cannot use the system if your dentist wants to use a modified tissue impression coping. Bummer....

Yeah, that is a slight problem...but what doesn't have issues in this business whether it be digital or physical impressions?

 

[eyeloveteeth]

well i think 2000markpeters' point is the whole thing is half assed. We'e done plenty as well, and it's annoying when your doctor is calling back furious that the tissue contour was not done correctly.

 

[rkm rdt]

Please forgive my newbness but it appears that the analog is placed in the itero model similar to Encode.

It looks like a standard hole instead of the proper tissue contour.

Is this the same with Trios models? Do Core 3D models suffer from the same dilema as Mark Peters described?

 

[dmonwaxa]

??? Shouldn't the tissue contour be addressed clinically? ie: when the "modified" cover screws, healing caps are temporarily placed? Once removed the tissue area is then scanned? Or tissue. Is lab modified and scanned before abutment is designed. Am I missing something here?

 

[sidesh0wb0b]

I really like it. I use it for a variety of things. It works better for me on the metal abutments than trying to wax them. You have to put a couple of coats of rubber sep on the abutment before using the gel. The fits come out great. I also use it for covering the access hole to the screw on abutments. Sometimes I use it for connectors on bridge waxups. I also use for duplicating clasps of partials in blue mousse bites when the patient want give up their partial. Lots of uses.

interesting, might have to give it a whirl again

 

[2000markpeters]

the point is, even if the doctor has taken the time to properly contour the tissue using a temporary to get the proper emergence profile from the tissue, there is no way to capture this data and have it milled using the itero system. same problem with models from core3d. the technology jet is not there yet.

 

[2000markpeters]

the models are very accurate otherwise.

 

[rkm rdt]

the point is, even if the doctor has taken the time to properly contour the tissue using a temporary to get the proper emergence profile from the tissue, there is no way to capture this data and have it milled using the itero system. same problem with models from core3d. the technology jet is not there yet.

I would think that will eventually be solved with a software upgrade would it not?

So do we wait for the solution or do we solve it here on DLN ?

Why not incorporate a pre scan of the custom temp/healing cap into our abutment designer software?

 

[dmonwaxa]

@2000markpeters ... if the model is accurate then the scan is accurate...right? So if the capture of the tissues (hard and soft) is accurate then the model should be a duplicate of the oral environment. So can the doc use a modified healing cap to contour the tissue then remove for scan to capture the site for emergence profile of abutment, also can this be done as a double scan and stitched together to create the model?

 

[rkm rdt]

@2000markpeters ... if the model is accurate then the scan is accurate...right? So if the capture of the tissues (hard and soft) is accurate then the model should be a duplicate of the oral environment. So can the doc use a modified healing cap to contour the tissue then remove for scan to capture the site for emergence profile of abutment, also can this be done as a double scan and stitched together to create the model?

I wish I had thought of that?

 

[2000markpeters]

Not possible, have tried, they do not have the function. One scan will override the last one. Also they just cannot seem to mill the area around the implant socket as a true representation. Not sure what their issue is.

 

[PDC]

It would seem that Itero could at least offer the option of a specific amount to have milled out around the abutment such as .5-2.0 mm. The abutment space could be tapered upward from the top of the implant increasing upward to the surface. The doctor could choose these measurements chairside based on what he saw. If the scan can't capture it, then this would at least get us in the ballpark.

 

[rkm rdt]

Not possible, have tried, they do not have the function. One scan will override the last one. Also they just cannot seem to mill the area around the implant socket as a true representation. Not sure what their issue is.