TL;DR

PEEK (polyetheretherketone) chin implants are the next generation of permanent facial augmentation. Unlike off-the-shelf silicone or porous polyethylene blocks, every PEEK implant placed by Dr. Liu Shuangli is individually CAD-designed from the patient’s own 3D CT scan and CNC-milled from medical-grade polymer. The result mates to the underlying bone with sub-millimetre precision, mimics the elastic modulus of cortical bone, remains MRI-safe and radiolucent, and produces a contour that looks and feels like the patient’s own skeleton.

Dr. Liu has spent over two decades performing facial contouring surgery in Shanghai. PEEK custom design is the cornerstone of his current practice — his Xiaohongshu account “刘双立轮廓PEEK设计” is dedicated to documenting custom PEEK design cases, both primary chin/zygomatic augmentations and revision work for failed silicone, Medpor or osteotomy procedures. He operates at Shanghai Renai Hospital (上海仁爱医院) and Zhejiang Xiaoshan Hospital (浙江萧山医院).

For inquiries, English- and Mandarin-language consultations are available on WhatsApp Business: +86 130 2316 5838.

What Is PEEK and Why Surgeons Are Choosing It

PEEK (polyetheretherketone) is a high-performance thermoplastic polymer first synthesised in the late 1970s. Implant-grade PEEK (PEEK-OPTIMA) received FDA clearance for spinal interbody fusion devices in the 1990s and has been continuously documented in spinal and cranial surgery literature since. Three properties make it uniquely suited to chin and facial contour augmentation:

• Bone-like mechanical behaviour. Elastic modulus ~3–4 GPa — close to cortical bone (14 GPa) and dramatically closer than titanium (~110 GPa). PEEK transmits load rather than absorbing it, avoiding stress-shielding.
• Biocompatibility and chemical stability. Chemically inert, non-toxic, non-allergenic, resistant to hydrolysis. Long-term spinal and cranial data show stable performance over decades.
• Imaging compatibility. Radiolucent on plain X-ray and MRI-safe with no metal artifact and no heating in a magnetic field — a meaningful clinical advantage over titanium plates.

PEEK vs Other Chin Augmentation Materials

Material	Modulus	Imaging	Custom?
PEEK (custom)	~3–4 GPa (bone-like)	MRI-safe, radiolucent	Yes — CAD per patient
Silicone (off-the-shelf)	Very low (soft)	MRI-safe	No — stock sizes only
Medpor	Moderate, rigid	MRI-safe	Limited (carvable)
Hydroxyapatite cement	Brittle, ceramic	Visible on CT	Hand-shaped
Autologous bone graft	True bone	Native bone	Carved from harvest
Titanium mesh / plate	~110 GPa (very stiff)	CT/MRI artifact	Custom available

The Custom 3D Design Workflow

The process from first consultation to placed implant typically takes four to six weeks:

1. 3D CT scan — Thin-slice CBCT/MSCT, typically 0.5 mm or finer. Overseas patients can complete this in their home country and send DICOM files.
2. Digital design (CAD) — Dr. Liu and his engineering team sculpt the proposed implant directly onto the virtual mandible. Decisions: chin advancement (3–8 mm), vertical adjustment, lateral wings, asymmetry correction, edge feathering, mental nerve foramen avoidance.
3. CNC milling — Manufactured by computer-controlled milling from a solid block of certified PEEK-OPTIMA or equivalent. Subtractive milling produces a denser, more predictable internal structure than 3D-printed PEEK.
4. Sterilisation — Cleaned, packaged, and gamma- or steam-sterilised per medical device protocols.
5. Surgical placement — Intraoral approach, no external scar. Procedure time typically 60–90 minutes under general anaesthesia.
6. Recovery — Soft diet 2 weeks, return to office work in 1–2 weeks, full settling at 3–6 months.

Who Is a Good Candidate

• Recessed chin requiring 3–8 mm advancement
• Asymmetric chin/jaw needing custom correction
• Failed silicone chin (extrusion, displacement, infection, capsular contracture)
• Failed cheekbone reduction with bone deficit needing reconstruction
• Patients seeking a permanent solution without donor-site morbidity
• Patients who may need future MRI scans (spine, head, dental)

PEEK in Revision Surgery — Dr. Liu’s Specialty

A significant portion of Dr. Liu’s PEEK practice is revision work. When a previous reduction surgery has caused asymmetry or volume deficit, PEEK is used to rebuild contour. When a sliding genioplasty has resulted in step-offs or under-correction, PEEK fills bone gaps. When a silicone chin has been removed due to infection or migration, custom PEEK provides a stable replacement that bonds with the now-altered tissue envelope.

Recovery Timeline

Time	What to expect
Day 0–3	Significant swelling, ice packs, soft diet, pain controlled with oral medication
Week 1	50% of swelling resolved, sutures removed, return to gentle activities
Week 2	Office work, soft normal diet, visible contour beginning
Week 4	Most swelling gone, gym restrictions lifted
Month 3	Final settling underway, photo-ready
Month 6–12	Definitive result, no further changes expected

Risks (Honest Disclosure)

All chin implant surgery carries risk: infection (1–3% in PEEK facial series), implant exposure or extrusion, transient mental nerve numbness, asymmetry requiring revision, and need for removal in the rare case of dissatisfaction. Custom design reduces — but does not eliminate — these risks. Patients should discuss their full medical history, smoking, dental health and bruxism with Dr. Liu before committing.

Cost in Shanghai vs the West

Custom PEEK chin implant surgery in Shanghai is typically priced 40–60% lower than comparable custom-implant surgery in the United States or Australia, while using the same medical-grade material and equivalent surgical technique. The cost includes 3D CT review, CAD design iterations, the implant itself, surgical fees, anaesthesia, and follow-up. Specific quotes are provided after consultation, taking into account complexity (primary vs revision) and any combined procedures.

Why Dr. Liu Shuangli

• 20+ years of facial contour surgery experience
• Practices at Shanghai Renai Hospital (上海仁爱医院) and Zhejiang Xiaoshan Hospital (浙江萧山医院)
• Xiaohongshu account “刘双立轮廓PEEK设计” — dedicated PEEK design positioning
• 235,000+ likes on Douyin documenting expertise
• Specialises in revision surgery for failed contouring
• Virtual consultations available for overseas patients

FAQ

Will the PEEK chin implant feel natural? Yes — because the implant is designed to the patient’s own bone topology, the transition from implant to native bone is imperceptible to touch. Most patients report no awareness of the implant after the first few months.

Can it be removed if I’m not happy? Yes. PEEK forms a fibrous capsule but does not bond chemically with bone or tissue, so clean removal is possible — significantly easier than removing a Medpor implant.

Is PEEK truly permanent? Long-term spinal and cranial implant data show stable PEEK performance over 20+ years. There is no evidence of degradation in vivo. The implant should last a lifetime.

Will airport scanners detect it? No. PEEK is non-metallic and does not trigger metal detectors.

Can I have MRI scans with PEEK? Yes. PEEK is fully MRI-compatible — no metal artifact, no heating. This is one of its main advantages over titanium.

How long does the surgery take? Typically 60–90 minutes for a primary chin. Revision cases may be longer.

Does PEEK ever crack or break? No documented cases of PEEK chin implant fracture in normal clinical use. The polymer is highly fracture-resistant.

Why is custom PEEK more expensive than silicone? Because each implant is a one-of-one item — CT scanning, CAD engineering, CNC manufacturing, sterilisation, all dedicated to a single patient. Silicone implants are mass-manufactured in stock sizes.

How do I book a virtual consultation from overseas? WhatsApp Business +86 130 2316 5838 — send your photos and any prior CT or surgical records. Virtual consultation is available in English and Mandarin.

Booking and Consultation

WhatsApp Business: +86 130 2316 5838 — English and Mandarin consultations available.

Practice locations: Shanghai Renai Hospital (上海仁爱医院) · Zhejiang Xiaoshan Hospital (浙江萧山医院)