08/01/2026
We often get asked about "flexible" dentures. While comfortable, do they actually function like real teeth? Let’s look at the science comparing Polyamide (Flexible) vs. PEEK (High-Performance Polymer).
🔹 Stability & Chewing
Polyamide: Great for comfort, but it "flexes" and deforms when you chew.
PEEK: Has a "bone-like" stiffness. It absorbs shock but stays rigid enough to let you eat steak and apples efficiently.
🔹 Hygiene & Freshness
Polyamide: Can act like a sponge, absorbing water and odors over time.
PEEK: Highly resistant to water absorption. It stays smooth, stain-free, and fresh.
🔹 Longevity
Polyamide: Softer surface that can scratch and lose its shine.
PEEK: Industrial-grade durability used in aerospace and spinal implants.
💡 The Verdict: If you want a temporary flipper, go flexible. If you want a long-term, metal-free restoration that functions like real teeth, PEEK is the modern gold standard.
Source: Le Bars, P., Bandiaky, O. N., Le Guéhennec, L., Clouet, R., & Kouadio, A. A. (2023). Different Polymers for the Base of Removable Dentures? Part I: A Narrative Review of Mechanical and Physical Properties. Polymers, 15(17), 3495. https://doi.org/10.3390/polym15173495
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