Solid free form fabrication techniques can be utilized indirectly to
manufacture substrates, dies, models, near-net shapes, shells, and
wax-ups that are then used in the manufacture of dental articles. Digital
light processing is the most preferred indirect method for the production
of substrates. After the substrates are produced, various coating or
deposition techniques such as gel casting, slip casting, slurry casting,
pressure infiltration, dipping, colloidal spray deposition or
electrophoretic deposition are used to manufacture the dental article.