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Acetal Partial
Zirlux Acetal is a milled resin that provides a superior metal-free alternative for removable applications.
This 99.9% pure polyoxymethylene (POM) is a highly crystalline thermoplastic with properties that closely mirror natural teeth.
The material's unique characteristic of being flexible when thin but rigid when thick makes it ideal for tooth-retained removable appliances with optimized clasp design and structural support.
Think of Acetal as a much-improved PMMA—it's both stronger and more flexible, with virtually zero water absorption that prevents stains and odors while delivering long-lasting performance.
The material's ability to engage naturally undercuts provides maximum retention and patient comfort, while its natural tooth-colored appearance eliminates visible metal concerns, particularly in anterior applications.


Clinical Benefits of Acetal Partial Dentures
- Superior Manufacturing Precision – Milled fabrication eliminates injection heating/cooling, avoiding expansion or shrinkage for exceptional accuracy
- Exceptional Material Properties – 99.9% pure, highly crystalline thermoplastic with 90 MPa strength and superior fatigue resistance
- Adaptive Flexibility – Material is flexible when thin for comfortable clasps, but rigid when thick for structural support
- Optimal Moisture Resistance – Virtually zero water absorption prevents staining, odor development, and dimensional changes
- No Thermal Conductivity – Eliminates temperature sensitivity for enhanced patient comfort during eating and drinking
- Strategic Clasp Placement – Clasps engage teeth instead of tissue, reducing tissue irritation and improving retention
- Excellent Esthetics – Clasps available in most shades for seamless integration
- Metal-Free Solution – Perfect for patients with metal allergies or sensitivities to traditional frameworks
- Enhanced Patient Comfort – Flexible clasp engagement reduces pressure on abutment teeth while maintaining reliable retention
- Biocompatible Performance – Excellent tissue compatibility with minimal inflammatory response
- Easy Maintenance – Non-porous surface resists plaque accumulation and simplifies patient hygiene protocols
- Customizable Options – Available in multiple disc sizes (98.5mm) and thicknesses (15mm, 20mm, 25mm) for optimal design flexibility
These benefits make acetal partials ideal for patients requiring precision, esthetics, and reliable metal-free performance.
Product Specifications

Description | Acetal resin partials are very biocompatible, making it an excellent choice for patients with sensitivities to metal or acrylic. |
Tooth Shades | A1, A2, A3, A3.5, B1, B2, C1, C2, D2, D3, BL2, BL3 |
Patient Visits (est.) | 3 |
Applications | Partial tooth replacement |
Materials | • Acetal resin (milled) • Denture teeth • Clasps (multiple options available) |
Benefits | • Alternative for patients with allergies to other materials • Durable |
Records | • PVS or IOS impression • Bite • Opposing • Patient photographs |
Process | • Records • Wax try-in (optional) • Seat |
Seating | Adjustments should be none to minimal. |
Warranty | 1 year |
Insurance Codes | • D5213 Maxillary partial denture - cast metal framework with resin denture bases (including any conventional clasps, rests and teeth) • D5214 Mandibular partial denture - cast metal framework with resin denture bases (including any conventional clasps, rests and teeth) |
Download Your Free Removable Solutions Guide Now
What You'll Gain In This 85-Page Guide:
- A deep dive into different removable product specifications
- How contemporary digital methods offer great benefits for removable restorations
- Comprehensive removable protocols, drawing from the experience of 200,000+ cases
Available in digital or print format (free mailing included).

Downloadable Resources
Partial Denture Offerings - Product Comparison
Wear | Esthetics | Strength | Price | Lab Days | Materials | Benefits | |
---|---|---|---|---|---|---|---|
SLM Cobalt Chrome Partial | ★★★★ | ★★★ | ★★★★ | $466.00 | 12 | • SLM frame (Cobalt Chrome) • Acrylic • Denture teeth • Clasps (multiple options available) |
• High strength • Durable |
SLM Titanium Partial | ★★★★ | ★★★ | ★★★★ | $466.00 | 12 | • SLM frame (Titanium) • Acrylic • Denture teeth • Clasps (multiple options available) |
• High strength • Durable |
Acetal Partial | ★★★★ | ★★★★★ | ★★★ | $461.00 | 12 | • Acetal resin (milled) • Denture teeth • Clasps (multiple options available) |
• Alternative for patients with allergies to other materials • Durable |
Thermoplastic Partial | ★★★ | ★★★★★ | ★★★★★ | $308.00 | 8 | • Flexible thermoplastic • Denture teeth • Clasps (multiple options available) |
• Flexible • Added comfort |
Thermoplastic Partial Hybrid | ★★★ | ★★★★ | ★★★★★ | $413.00 | 12 | • SLM frame (printed metal) • Flexible thermoplastic • Denture teeth • Clasps (multiple options available) |
• Flexible • Added comfort • Additional strength |
All Acrylic Partial (Flipper) | ★★ | ★★★ | ★★ | $152.00 | 5 | • Acrylic • Denture teeth • Clasps (wrought wire or esthetic) |
• Lightweight • Economical |
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