FABRICATE (cementable) PFM

Manufacturing a cementable restoration closely follows the same procedures as for a traditional cementable crown for a natural tooth. Remove the abutment and soft tissue mulange from the working model and screw the abutment on to a second analog. Paint die spacer on to the abutment.
1.
Block out the screw access hole of the abutment and apply a wax separator on the abutment.
2.
Wax a base coat of a proximal 0.5mm thickness of wax over the abutment.
3.
Carefully separate the wax coping from the abutment and remove the block out wax from the screw access hole.
4.
Remove the abutment from the second analog and screw the abutment back on to the analog in the working model. Ensure the abutment is placed back in the correct position and fully seated.
5.
Replace the wax coping on the abutment and wax to final contour. Leaving 1.5 to 2mm of room for porcelain.
6.
Once final contour is achieved remove the wax coping and abutment from the working model. Seal the margin of the wax coping and sprue for casting.
7.
Invest and cast in the usual manner.
8.
Divest and finish metal coping on the abutment.
9.
Bake on opaquer. Screw the abutment on to the analog of the model and build up porcelain without the soft tissue mulange in place.
10.
The occlusal table should be slightly narrower than the tooth it is replacing. Only one occlusal contact right above the implant is advised. Contacts should be very light to just out of occlusion.
11.
Remove the crown and abutment from the model and replace the soft tissue mulange on to the model. Screw the abutment back in place and adjust the gingival contour of the crown to the prescribing Dr.'s preference.
12.
Stain and glaze the porcelain to desired shade and polish the metal collar.