Further, no changes are needed to the casting process with the 3D printed wax patterns
were sprued using 0.2 mm sprue wax (Yeti dental), invested using phosphate bonded investment (Cobavest, Yeti dental) in a metal ring.
 Herman, A.; Cesal, M., (2012) Temperature Stability of the Process of Production of Wax Patterns
for Investment Casting Technology, Manufacturing Technology.
One of the new and innovative methods was using digital designing for the fabrication of the wax pattern
of RPD abutments.
An aesthetic spectacle retained ear prosthesis was made by a meticulous step-by-step procedure using donor ear for fabrication of wax pattern
. Rehabilitation of a patient with missing ear due to any condition can be achieved by restoring the defect and fulfilling the objective of maintaining patient comfort, aesthetics, and bringing the patient back to the society to lead a normal life.
Several other impression techniques have been used, such as (1) using the donor technique , in which the patient acts as the donor to make an ear impression; (2) dividing the cast of the remaining ear into small squares to facilitate sculpting the missing ear [3,17]; (3) using image-editing software (such as Adobe Photoshop) to assist in sculpting the prosthesis [13,17]; (4) using a color slide [17-18]; (5) obtaining a mirror image of the cast of the patient's remaining ear, using transparent sheets and a copy machine to aid in the sculpting process [17,19]; and (6) sectioning the wax pattern
of the opposite ear, using a wax saw, into 1 mm-thick slices, then reversing each section and placing it on top of the previous one to create a mirror image of the original pattern [13,17].
The key difference in the new method is that wax pattern
is produced with an integral textured surface.
The illustrated dewaxing system was designed to solve a problem of cracking of product molds during the wax pattern
removal process while using a conventional dewaxing autoclave.
The preparation of the wax pattern
is a key procedure in investment casting, playing an important role with the solidification of the metal on the final dimensional accuracy of the casting part.
The resulting master cast was sprayed with an oil free release agent (Silicone Spray, Dentsply Caulk) to facilitate the removal of wax pattern
and prevent the wax from soaking into the gypsum cast.
were fabricated by dip wax technique, 2 patrix were attached to the distal surface of wax pattern
on 13 and 25.