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38 or plugs placed in the nasal defect, or by a support attached to a dental plate, or to a tooth. Entire facial masks may be held in place with spectacles. In other instances with skin-lined loops or pockets, made by the surgeon to hold pegs attached to the mask. Combinations of these methods of securing masks, in addition to a strongly adhesive glue, are often used.

The nose alone may be made, or the nose and upper lip with mustache, or the chin, etc.

These prostheses must be carefully molded. Some are made of thin metal, others are of soft or hard rubber; papier mache, or porcelain; others again of plastic paste or wax, all being colored to match the surrounding skin.

The technic of making a facial mask is rather complicated, the following being the process used by R. Tait McKenzie: