Geller Cast Model, how to...

  • Thread starter Thread starter Marcusthegladiator CDT
  • Start date Start date
Get a really long milling bur to taper your dies. Even the slightest undercut will ruin your day.
 
It is a long and time consuming procedure, but if your paid enough, why not.
 
They are not easy, and really not practical for the majority of work we do in the lab. I would much rather have single dies and a solid model than deal with this headache.

Good luck, post some pictures of you screaming when you lock in a die and have to start all over :)
 
JohnWilson said:
They are not easy, and really not practical for the majority of work we do in the lab. I would much rather have single dies and a solid model than deal with this headache.

Good luck, post some pictures of you screaming when you lock in a die and have to start all over :)
Click to expand...
We don't have any reason to build one, I just never have before so I would like to.
 
Put short Crosspins pins + sleeves under the preps ie treat initially as a pindex model , then cut dies and taper - apply a small amount of wax around taper (The pins will hold die in the correct place after "Gellering" ).After "Gellering" warm the wax around the dies and pop them out - steam-clean and you have a beautiful soft tissue representation "Geller " Model. Easily done!!
 
martintay said:
Put short Crosspins pins + sleeves under the preps ie treat initially as a pindex model , then cut dies and taper - apply a small amount of wax around taper (The pins will hold die in the correct place after "Gellering" ).After "Gellering" warm the wax around the dies and pop them out - steam-clean and you have a beautiful soft tissue representation "Geller " Model. Easily done!!
Click to expand...

Easier said that done :)
 
Not hard John - I`ve done full arch like this. The wax spacer around the dies is the secret to success IMO
 
martintay said:
Not hard John - I`ve done full arch like this. The wax spacer around the dies is the secret to success IMO
Click to expand...
Well I would want a very thin and even wax, so I would just heat the pot up all the way, or torch a pan of wax till its quite hot... What about a thin layer of that pink rubber sep?
 
Another approach is to make a putty matrix of the model, trim the soft tissue away, inject Zhermack Gingifast Rigid into the matrix, seat it on the model.

Now you have removable soft tissue. Much easier IMO
 
actittle said:
Another approach is to make a putty matrix of the model, trim the soft tissue away, inject Zhermack Gingifast Rigid into the matrix, seat it on the model.

Now you have removable soft tissue. Much easier IMO
Click to expand...
Is that just labial? Or includes lingual??.
 
Agree with acctitle as another option , but its not a Geller.Marcus I would space with wax as it blocks any undercut. Box imp with wax also before Gellering (Use die stone also - a different colour is nice ) John get your model guys to give it a go on a simple 1 or 2 unit simple case . They will probably enjoy it and hopefully you and your client will like the result :)
 
We have done it both ways.

Sometimes we have it slip off like a boot around the dies. Sometimes we split it in the interproximal area so we can peel it off lingual/labial.
 
I have made them Martin, of course anything that you put your attention to detail to is achievable. I am just saying we have done them where we think its perfect and one die will lock in and then its a total do over. When we made them we would taper the dies and then use supersep, so there was no slop to the dies to the wall of the model. When we sealed with wax we would sometimes get lateral play After a few under MY belt I got them down but my plaster guy hates them and thus I hate them.
 
Ok guys, so the margins are usually to "Tight " anyway ! Agreed ? What I do everyday with my statics is - put the coping on the model and carefully follow the coping ( but go 1mm deeper) with a very small flame tungsten or diamond depending on coping material in a high speed handpiece. This way I get a virtual "Geller" in solid accurate form - also with enough room to add ceramic at the margin as the gingivae is already relieved a touch ! This takes me approx. 15 seconds per coping.
 
Hi Marcus
QDT 2009 "the alveolar model" M.Magne, P. Bazos, P. Magne.
 
martintay said:
Ok guys, so the margins are usually to "Tight " anyway ! Agreed ? What I do everyday with my statics is - put the coping on the model and carefully follow the coping ( but go 1mm deeper) with a very small flame tungsten or diamond depending on coping material in a high speed handpiece. This way I get a virtual "Geller" in solid accurate form - also with enough room to add ceramic at the margin as the gingivae is already relieved a touch ! This takes me approx. 15 seconds per coping.
Click to expand...
When I build my soft tissue models, I block everything out with utility wax. I fill the prepped dies in the impression with wax up to the margin. They eject the elastic soft tissue, then remove wax and pour stone. I get some nice soft tissue models that techs comment on and ask how I did it. But even though you cannot remove the tissue, I still have techs remove it anyway and they cant get it back on. And no matter how many times I tell em, don't remove the tissue, I provided you with another solid model without tissue to hack up. They still mess up my tissue models.
 

Similar threads

Z
Seeking advice on how to obtain a diploma or official recognition – Experienced dental technician
Replies
2
Views
393
Doris A
Doris A
S
Start-to-end processing of Rodin Printed Denture (Sculpture, Base 2.0., Palette)
Replies
7
Views
2K
TXDentalSolutionsLLC
T
J
How to design dental model with hexagon(Honeycomb) infill base?
Replies
15
Views
3K
Thibaut
T
J
  • Question Question
How to keep the position and orientation when loading the custom model tooth 3D file?
Replies
4
Views
929
jbaeaa
J
Denturepropgh
How to properly wet a cast. For rinsing while trimming/wax seperation/duplication/processing.
Replies
12
Views
3K
kimba
kimba
Top Bottom