denturist-student
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Exactly what I did... a silicone putty impression of the denture surface with a stone index of the intaglio surface. I then made wax molds of the dentures much like a duplicate denture. Then I mounted it on a Hanaumate arbitrary mount using the stone intaglio casts. I measured the old vertical with an outside caliper guage (picked up from Lee Valley) in three places (Tuberosities and incisive papilla). Confirmed on the mounted case using an inside guage..(Indellible pencil tranferred measurement points to models.)...
I incorporated the changes that should be made in the setup and did a setup at that vertical. I did a setup using stabilized light cure baseplates of and obtained an upper impression using silicon pvs. (dual viscosity technique)
Since the bite was quite close to the original via the caliper readings I inserted the processed lower and did a chairside Tokoyama Softliner M reline and that restored the original bite and made for a better lower impression. It was very close....Centric was taken from the old denture impressions and was very close.
My thinking was that the original denture setup had the upper incisors way outside anterior functional limits and posteriors setup on flat plane rather than compensating curve.
You were quite right that I should not change the bite at all so I did not change the vertical nor the class three protrusion. I merely reset the upper teeth back within functional limits and then tilted the lower incisors inward as my be-learned instructors taught me to do with class three's. First time I have ever done a two insertion denture...One for upper reline impression at try in and one for the lower chairside reline impression during insertion...... (Actually did a confirming insert of the lower for vertical and centric) Most of the concerns were functional and cosmetic. I also set the posteriors up on a curve rather than flat plane...I have remade about four or five of those already using a Dentsply 20 degree template...
Normally on a flat ridge I will do a Neutral Zone impression using an Ivolene baseplate with a wire cage and let the Hydrocast flow where it wants too...
End result is she gets a more functionally correct setup at her old bite and a soft liner as well....best I can do....
Thanks for your suggestions...
...Great minds think alike....
I incorporated the changes that should be made in the setup and did a setup at that vertical. I did a setup using stabilized light cure baseplates of and obtained an upper impression using silicon pvs. (dual viscosity technique)
Since the bite was quite close to the original via the caliper readings I inserted the processed lower and did a chairside Tokoyama Softliner M reline and that restored the original bite and made for a better lower impression. It was very close....Centric was taken from the old denture impressions and was very close.
My thinking was that the original denture setup had the upper incisors way outside anterior functional limits and posteriors setup on flat plane rather than compensating curve.
You were quite right that I should not change the bite at all so I did not change the vertical nor the class three protrusion. I merely reset the upper teeth back within functional limits and then tilted the lower incisors inward as my be-learned instructors taught me to do with class three's. First time I have ever done a two insertion denture...One for upper reline impression at try in and one for the lower chairside reline impression during insertion...... (Actually did a confirming insert of the lower for vertical and centric) Most of the concerns were functional and cosmetic. I also set the posteriors up on a curve rather than flat plane...I have remade about four or five of those already using a Dentsply 20 degree template...
Normally on a flat ridge I will do a Neutral Zone impression using an Ivolene baseplate with a wire cage and let the Hydrocast flow where it wants too...
End result is she gets a more functionally correct setup at her old bite and a soft liner as well....best I can do....
Thanks for your suggestions...
...Great minds think alike....