Facial Contouring Surgery with Custom Silicone Implants Based on a 3D Prototype Model and CT-Scan: A Preliminary...

Facial contouring surgery is commonly performed to address anatomical and cultural differences in facial structure among Asian populations. Prior research has shown that zygomatic and mandibular contouring, along with fat grafting in the midface, are frequently used in this demographic. However, the field lacks ready-to-use methods for custom implant fabrication that improve predictability and patient satisfaction. This gap motivated the development of new techniques using 3D modeling and custom silicone implants. No prior work had resolved how to integrate 3D rapid prototyping with silicone implant design for facial contouring. Existing methods rely on general templates or limited anatomical customization. The need for a more precise and patient-specific approach remains unmet. Custom implants may offer better outcomes but require validation in clinical settings. This study addresses the uncertainty around the feasibility and safety of using PVA-based 3D prototypes for silicone implant design. The novelty lies in combining CT scans and rapid prototyping to create patient-specific implants.

The aim of this preliminary study was to evaluate the clinical outcomes of custom silicone implants in facial contouring surgery. The specific problem addressed is the lack of ready-to-use, patient-specific implant fabrication methods. The motivation stems from the need for more predictable and anatomically accurate surgical outcomes. Custom implants may reduce variability in results and improve patient satisfaction. The study sought to assess safety, predictability, and patient satisfaction in a small cohort. The researchers focused on zygomatic and mandibular contouring in Asian patients. The study design involved using CT scans and 3D rapid prototyping to fabricate implants. The goal was to determine whether this method could be reliably applied in clinical practice.

The study involved seven patients who underwent facial contouring surgery with custom silicone implants. Clinical history and photographs were collected before implant insertion. CT scans were used to create 3D prototype models of each patient's facial anatomy. Polyvinyl alcohol (PVA) clay was used as a mold material for the implants. The implants were fabricated based on the 3D rapid prototyping model. Patients were followed up for an average of 11.43 months to assess outcomes. No abnormalities in soft tissue or bone were observed during follow-up. Patient satisfaction was evaluated through postoperative interviews and assessments.

All seven patients showed no complications related to implant use or tissue reaction. The custom implants demonstrated predictable outcomes in facial contouring. Patient satisfaction was reported as high across all cases. The use of PVA-based 3D prototypes allowed for accurate implant shaping. No adverse effects were noted in the soft tissue or bone structures. The study found that custom silicone implants improved surgical predictability. The follow-up period averaged 11.43 months with no reported issues. The researchers propose that this method may enhance the precision of facial contouring procedures.

The authors propose that custom silicone implants based on 3D rapid prototyping may offer a reliable method for facial contouring. The study suggests that PVA clay models can improve implant accuracy and patient outcomes. The findings indicate that this approach may enhance surgical predictability. No essentiality was assigned to the use of PVA over other materials. The authors suggest that further studies are needed to confirm these preliminary results. The study did not claim that this method is superior to all existing techniques. The results suggest that patient satisfaction is a key outcome of this approach. The authors conclude that this method may play a prominent role in future facial contouring procedures.