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Dental Stone Type III & IV — Hard & Super Hard Gypsum | Bulk Supplier China
Dental stone gypsum from Shanghai Even Medical — Type III Hard and Type IV Super Hard, supplied to dental labs, distributors, and OEM buyers worldwide. Available in five colors (white, yellow, red, blue, orange), packed in 1kg or 25kg bags. High compressive strength, low linear expansion, and consistent setting performance. Item No: E50012.
Type III vs Type IV — Key Differences
| Property | Type III — Hard (E50012-3) | Type IV — Super Hard (E50012-4) |
|---|---|---|
| Classification | Hard dental stone | Super hard dental stone |
| Mixing Ratio | 100g powder : 23ml water | 100g powder : 22ml water |
| Tempo di miscelazione | 30–60 seconds | 30–60 seconds |
| Tempo di impostazione | 10-12 minuti | 7–9 minutes |
| Solidification Time | >30 minutes | >30 minutes |
| Resistenza alla compressione | ≥30 MPa | ≥35 MPa |
| Linear Expansion | ≤0.2% | ≤0.1% |
| Primary Use | Dentures, inlays, onlays, study models, general casting | Implant abutments, high-stress casts, precision restorations |
Key Features
- Two Strength Grades — Type III for general dental lab work; Type IV for high-precision and high-stress applications such as implant abutments and precision fixed restorations.
- 5 Color Options — White, Yellow, Red, Blue, Orange. Color-coded models improve workflow efficiency in busy dental labs, making it easy to distinguish between different model types at a glance.
- High Compressive Strength — Type III ≥30MPa and Type IV ≥35MPa ensure durable, dimensionally stable models that withstand trimming, articulation, and handling without chipping.
- Low Linear Expansion — ≤0.2% (Type III) and ≤0.1% (Type IV) ensures accurate reproduction of the impression without distortion.
- Fast Setting (Type IV) — 7–9 minute setting time for Type IV reduces lab turnaround time on precision cases.
- Three Packaging Options — Standard bag (1kg), foil bag (1kg), and kraft paper bag (25kg) to suit different lab sizes and procurement volumes.
- OEM Available — Custom colors, bag sizes, labeling, and private-label programs for distributors and dental brands.
Full Specifications
| Articolo | Pietra dentale |
| Materiale | Calcium Sulfate Dihydrate (Gypsum) — 100% (CAS No. 10101-41-4) |
| Tipo | Type III Hard / Type IV Super Hard |
| Aspetto | Polvere |
| Colore | White / Yellow / Red / Blue / Orange |
| Odor | Weak fragrance |
| HS Code | 3407002000 |
| Durata di conservazione | 2 anni |
| Applicazione | Dental mold / Casting mold / Life casting |
Opzioni di colore
| Color No. | Colore | Pigment | Common Use |
|---|---|---|---|
| 1 | Bianco | No pigment | General dental models, orthopedic casting |
| 2 | Giallo | Permanent Yellow HR-P (C.I. P.Y.83) | Die models, crown & bridge work |
| 3 | Rosso | Lightfast Red BBN (C.I. P.R.48:1) | Study models, contrast casting |
| 4 | Blu | Blue pigment | Orthodontic models |
| 5 | Arancione | Orange pigment | Model identification, lab workflow |
Packaging Options
| Pack Type | Peso | Carton Config | Dimensioni del cartone | G.W / N.W |
|---|---|---|---|---|
| Standard Bag | 1 kg | 15 bags / carton | 36 × 31.5 × 15 cm | 16 kg / 15 kg |
| Foil Bag | 1 kg | 15 bags / carton | 36 × 31.5 × 15 cm | 16 kg / 15 kg |
| Kraft Paper Bag | 25 kg | 1 bag | 69.5 × 40.5 cm (W+9.5cm gusset) | 25 kg net |
Custom pack sizes and OEM labeling available. Contact us for bulk pallet pricing and FCL quotations.
Mixing & Usage Guide
| Applicazione | Water/Powder Ratio | Notes |
|---|---|---|
| Dental use (Type III) | 23ml per 100g powder | For dentures, study models, inlays, onlays |
| Dental use (Type IV) | 22ml per 100g powder | For implant abutments, precision restorations |
| Life casting / hand casting | 40ml per 100g powder | For 3D body and hand casting molds |
Clinical & Lab Applications
- Pouring alginate and silicone dental impressions
- Full and partial denture master casts (Type III)
- Crown, bridge, and inlay/onlay working casts (Type III)
- Implant abutment casts (Type IV)
- Orthodontic study models
- Articulator mounting casts
- 3D life casting — hand, foot, and body molds (white type, higher W/P ratio)
- Orthopedic casting (white type)
Dental Stone vs Plaster of Paris — What is the Difference?
| Dental Stone (Type III/IV) | Plaster of Paris (Type II) | |
|---|---|---|
| Crystal Structure | Alpha-hemihydrate — denser, stronger | Beta-hemihydrate — more porous |
| Resistenza alla compressione | ≥30 MPa (Type III) / ≥35 MPa (Type IV) | ~10–15 MPa |
| Water/Powder Ratio | Lower (22–23ml/100g) | Higher (45–50ml/100g) |
| Durezza della superficie | High — suitable for model trimming | Low — soft surface, chips easily |
| Best For | Working casts, dies, precision models | Study models, mounting, preliminary casts |
Frequently Asked Questions
What is the MOQ for dental stone?
For 1kg bags: MOQ is 1,005 bags (approximately one carton pallet). For 25kg bags: MOQ is 40 bags (1,000kg). Contact us via Quick Quote with your required type, color, and quantity for a precise quotation.
Which type should I order — Type III or Type IV?
Type III Hard dental stone is suitable for the majority of dental lab applications including dentures, study models, inlays, and onlays. Type IV Super Hard is required for high-stress applications such as implant abutment casts and precision fixed restorations where maximum surface hardness and minimal expansion are critical.
Can I order multiple colors in one shipment?
Yes. Mixed-color orders are accepted for both 1kg and 25kg packs. Specify your required colors and quantities in the Quick Quote form.
Can dental stone be used for life casting and hand molds?
Yes. White dental stone is suitable for 3D life casting (hand, foot, body molds) using a higher water-to-powder ratio of 40ml per 100g. It produces smooth, detailed casts suitable for artistic and keepsake applications.
What packaging options are available?
Standard bag (1kg), foil bag (1kg for better moisture protection), and kraft paper bag (25kg for bulk procurement). Custom bag sizes, colors, and OEM label printing are available — contact us for specifications.
What is the shelf life of dental stone?
2 years from manufacture date under recommended storage conditions — cool, dry place, away from moisture. Keep bags sealed until use.
Do you supply dental stone for orthopedic casting?
Yes. White dental stone is used in orthopedic casting applications. Compressive strength is slightly lower than dental-grade Type III — contact us for specific orthopedic casting specifications and pricing.
