Page 41 - GC America: The GC Experience - eMagazine for Dental Enthusiasts (April 2017)
P. 41

agreed with this understanding.
The restorations were pressed from MT B00 ingots from GC. They were invested using the GC InitialTM LiSi Press Investment (Fig. 2) 34 mL Liquid, 16 mL water and 200
grams GC LiSiTM PressVest.
I mixed by hand for 30 seconds, then 60 seconds in the Renfert Twister vacuum mixer. I bench set for 20 minutes and de-flasked. I soaked the restorations in a preheated burnout at 1600 degrees fahrenheit for 60 minutes. Finally, I pressed the restorationsinanIbexoven200 gram ring with a temperature rise of 65 degrees celsius, a high temp of 913 celsius, and a hold time of 20 minutes.
After I desprued and cleaned the teeth, I checked the facial view, as well as the incisal to cervical view for the arch form (Fig. 3-4). I also checked contacts. It is important to makereductionsfromallangles to be sure the teeth follow principles of smile design and the cut back has uniformity. I cut back the facials with a bevel and avoided leaving deep grooves or ditches with sharp angles that could chip later. The new ingots from GC are less prone to chipping than previous Lithium Disilicate; however, I also want full integrity at the incisal.
Next, I characterized with Lustre Paste using a violet blend I mixed in the incisal area; value for mamelons on anteriors; and Value/Invivo IV3
(Fig. 2)
(Fig. 3)
(Fig. 4)

   39   40   41   42   43