Provided are a cranial deformation correction helmet (2) whereby it is possible for a shell (4) to be of sufficiently light weight while retaining necessary rigidity and hardness and a method whereby it is possible to create the cranial deformation correction helmet (2) with sufficient speed and low cost. A non cellular composite resin shell (4) is molded by selective laser sintering and a cellular composite resin liner (6) is thereafter disposed upon the inner face of the shell (4). The relative density of the shell (4) is 90 98%.
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