If you're considering rhinoplasty with implants, choosing between silicone and expanded polytetrafluoroethylene (ePTFE) is likely your biggest headache. Undoubtedly, both materials have their pros and cons, but conflicting advice from different doctors often leaves patients feeling confused. So, which should you choose for rhinoplasty? Let's first compare their characteristics.
I. Cost Comparison
The material cost of ePTFE is generally about twice that of silicone. However, the surgical fee for ePTFE implants is 7 to 10 times higher than for silicone implants. This is because sculpting and implanting ePTFE is more challenging than silicone, requiring greater surgeon skill. If the surgeon lacks sufficient expertise, it can significantly prolong the exposure time of the ePTFE to air, thereby increasing the risk of infection.
II. Intraoperative Shaping Flexibility
Silicone implants inherently possess the basic nasal structure, allowing for arbitrary sculpting. They can be prefabricated into various shapes and sizes featuring nasal tips, wings, and columellae. They offer good elasticity and dimensionality but feel slightly less natural to the touch.Although EPTIM material possesses some flexibility, its elasticity and three-dimensionality are relatively poor, making it unsuitable for sculpting and shaping. It is less effective for supporting the columella and nasal tip. However, due to its softness, EPTIM material closely conforms to the surrounding tissue after insertion, resulting in a more natural and realistic appearance and feel post-surgery.
III. Postoperative Implant Displacement
Silicone implants cannot tightly bond with human tissue. Combined with inadequate surgical technique—such as improperly sized or inaccurately positioned implant pockets—silicone rhinoplasty often leads to lateral movement and displacement of the implant. EPT, however, fuses tightly with surrounding tissue, significantly reducing the risk of postoperative displacement.
IV. Long-Term Implant Characteristics
Long-term clinical observations reveal that over time, as organic tissue ingrows into the ePTFE material, it loses its original flexibility and becomes significantly rigid. Consequently, after prolonged implantation, the nasal appearance and tactile sensation may lose realism, resulting in a stiff and unnatural nose. In contrast, silicone implants maintain their original shape and tactile properties over time.
V. Difficulty of Implant Removal
Due to tissue ingrowth, the FEP graft forms a tight bond with surrounding tissues, progressively reducing the surrounding cavity space. Consequently, if complications like infection occur, removing the FEP graft resembles excising a piece of the patient's own tissue, causing significant damage to the nasal structure. The longer the FEP graft remains in the body, the more challenging its removal becomes.In contrast, silicone implants are encapsulated by a protective capsule. In case of infection, the capsule can be opened to remove the implant, minimizing damage to surrounding tissues.