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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Emax-Press v cad
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<blockquote data-quote="marnero" data-source="post: 78185" data-attributes="member: 4086"><p>Sounds to me that you just need a little more attention to sprue positioning. Press Vest Speed does sometimes break off if the abutment is quite narrow and tall. You have to place the sprue absolutely vertical to the abutment, so that you dont get any horizontal forces on that tiny bit of investment. Some says Microstar investment are stronger, never tried it myself though.</p><p></p><p>As for cad vs press, I really like the press. Have been milling some cad cases and the margins are noe good. Press is incredible accurate. Also there is a difference in the strengt of the material. Scientific report states press to be 400 mpa +- 40mpa, while cad is 360 +- 60 mpa. Add in poor milling strategies and handling, and I think I´ve read it can go as low as about 250 mpa.</p></blockquote><p></p>
[QUOTE="marnero, post: 78185, member: 4086"] Sounds to me that you just need a little more attention to sprue positioning. Press Vest Speed does sometimes break off if the abutment is quite narrow and tall. You have to place the sprue absolutely vertical to the abutment, so that you dont get any horizontal forces on that tiny bit of investment. Some says Microstar investment are stronger, never tried it myself though. As for cad vs press, I really like the press. Have been milling some cad cases and the margins are noe good. Press is incredible accurate. Also there is a difference in the strengt of the material. Scientific report states press to be 400 mpa +- 40mpa, while cad is 360 +- 60 mpa. Add in poor milling strategies and handling, and I think I´ve read it can go as low as about 250 mpa. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Emax-Press v cad
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