Application of Personalized 3D-Printed Silicone Implants in Rhinoplasty: An Animal Experimental Study

Area of Science:

• Biomaterials Engineering
• Medical Device Technology
• Surgical Innovation

Background:

• Traditional silicone implants in rhinoplasty present challenges including displacement, tilting, sliding, and translucency.
• Current implants lack customization, necessitating intraoperative carving, which complicates surgery and extends operative time.
• 3D printing technology presents a novel approach for creating precise, patient-specific silicone nasal implants.

Purpose of the Study:

• To evaluate the efficacy of 3D-printed silicone nasal implants in mitigating common complications like displacement and translucency.
• To compare the surgical time and fit of 3D-printed implants against traditional silicone implants.
• To assess the potential of 3D printing for personalized nasal implant fabrication.

Main Methods:

• Personalized silicone implants were designed based on 3D CT scans of nasal bone data.
• A rabbit nasal implantation model was used to compare 3D-printed implants (3D group) with traditional silicone implants (control group).
• Additional implantation experiments were performed on beagle dogs to further validate the findings.

Main Results:

• 3D-printed implants demonstrated a precise fit with the nasal bone, enhanced by a rough, porous surface promoting tissue ingrowth and reducing displacement.
• The porous structure of the 3D-printed implants minimized light refraction, thereby reducing translucency.
• Surgical procedures utilizing 3D-printed implants required no intraoperative carving, leading to a significant reduction in operative time.

Conclusions:

• 3D-printed silicone implants effectively resolve displacement and translucency issues inherent in traditional implants.
• Personalized design capabilities of 3D printing cater to individual patient anatomical needs.
• The technology streamlines the surgical process, reducing operative time and enhancing overall surgical efficiency.