Abstract: Objective To provide guidance for auricular reconstruction by using three-dimensional auricle and guide plate based on auricular image data of the healthy side, and the three-dimensional solid model was printed. Methods The virtual three-dimensional model of the auricle and guide plate of the affected side was established by segmenting, mirroring and expanding CT data from the healthy auricle using Mimics software, which was further imported into a 3D printer to produce a three-dimensional solid model for clinical applications. Results An individualized and delicated three-dimensional solid model of a reconstructed auricle and guide plate of the affected side was successfully produced. It was used in auricular reconstruction for finer carving and localization of the affected auricle. Conclusion The digital and solid three-dimensional model of the auricle and guide plate obtained by Mimics software and 3D printing technology, may contribute a lot to the fabrication and localization of the affected auricle in microtia surgery.

Key words: Microtia, Auricle, Three-dimensional printing