Abstract: Objective To explore the efficacy of designing and fabricating personalized nasal framework with digital technology. Methods From November 2018 to August 2019, the three-dimensional nasal morphology of 14 patients was reconstructed by digital simulation technology, the preoperative and postoperative predicted three-dimensional nasal morphology was measured and compared, the volume of prosthesis needed for surgery was estimated, and the nasal prosthesis was designed. The nasal framework model was fabricated by three-dimensional printing technology to guide the fabrication of silicone framework. The changes of three-dimensional nasal morphology were measured by digital technique. Results The average follow-up period was 7 months. 12 patients and their parents were satisfied with the nasal shape, 2 cases thought that the shape of the nasal tip was general, and there was no obvious abnormal nasal shape and function. There was statistical difference in the distance between the nasion and nasal tip before and after operation(P =0.04). There was no significant difference in the distance between the nasion and the columella point and the nasolabial angle before and after operation(P=0.74; P=0.56). Conclusion Digital technology can realize the precise design and personalized preparation of nasal prosthesis, provide accurate guidance for the fabrication of nasal prosthesis scaffold, and provide objective evaluation for the three-dimensional structure of nose after plastic surgery.

Key words: Rhinoplasty, Digital technology, Nasal prosthesis, Three dimensional Printing