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Al. · 10-08-2008, 09:46 AM

Rob, I thought the strength value of zirconia was around 900 mpa?

I press all my posteriers full contour and layer the incisal 1/3 of upper bi's. in LD.
Anything less then .8 clearance I reduce the opposing.
For strength Id put one of these up against a milled yz coping that is layered anyday, but its a different story if I press a coping in LD and then layer it. But there is really no need to layer anything more then the incisal with the LT ingots.
Ive done plenty of posterior bridges in Lithium Disilicate with no fractures to date. As long as I have plenty of room for strong connections it would take a brute to break them.

It would be intresting to see a strength test on a 4mm pressed rod of 100% LD vs a 2mm milled rod of yz with 2mm of layered porcelin built around it.

10-08-2008, 09:46 AM	#2 (permalink)
Al. Senior Member Join Date: Jul 2008 Location: Kentucky Posts: 174 Gallery: 0 Rating: 0% (0) Rep Power: 1	Rob, I thought the strength value of zirconia was around 900 mpa? I press all my posteriers full contour and layer the incisal 1/3 of upper bi's. in LD. Anything less then .8 clearance I reduce the opposing. For strength Id put one of these up against a milled yz coping that is layered anyday, but its a different story if I press a coping in LD and then layer it. But there is really no need to layer anything more then the incisal with the LT ingots. Ive done plenty of posterior bridges in Lithium Disilicate with no fractures to date. As long as I have plenty of room for strong connections it would take a brute to break them. It would be intresting to see a strength test on a 4mm pressed rod of 100% LD vs a 2mm milled rod of yz with 2mm of layered porcelin built around it. __________________ There's a place for all of Gods creatures on my plate next to the mashed taters.