Fukuchiyama City Hospital 1 article published in JoVE Medicine Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach Toshiaki Numajiri1, Daiki Morita2, Hiroko Nakamura3, Ryo Yamochi1, Shoko Tsujiko4, Yoshihiro Sowa1 1Department of Plastic and Reconstructive Surgery, Kyoto Prefectural University of Medicine, 2Department of Plastic and Reconstructive Surgery, Showa University Fujigaoka Hospital, 3Department of Plastic and Reconstructive Surgery, Fukuchiyama City Hospital, 4Department of Plastic and Reconstructive Surgery, Saiseikai Shiga Hospital Methods for designing a computer-aided design/computer-aided manufacturing (CAD/CAM) surgical guide are shown. Cutting planes are separated, united, and thickened to easily visualize the necessary bone transfer. These designs can be three-dimensional printed and checked for accuracy.