Deyu Dental Lab

Precision. Esthetics. Reliability.

Emax

Emax esthetic crown

Lithium disilicate (Emax) is a premium esthetic material with natural translucency and lifelike shade depth. It is highly suitable for anterior crowns, veneers, and esthetic inlays where optical integration is critical.

We optimize cutback, layering, and final glaze to balance beauty and strength while preserving clinical precision. Available in both pressed (ingot) and CAD/CAM (HT/MT/LT) blocks, Emax delivers exceptional translucency and a monolithic solution for minimally invasive restorations.

Primary Indications

  • Single anterior crowns and veneers (maximum esthetic zone)
  • Esthetic inlays, onlays, and partial coverage restorations
  • Anterior bridges (up to 3-unit, with careful connector design)
  • Full-contour posterior crowns (moderate occlusal load, when esthetics priority)
  • Implant-supported single crowns with natural fluorescence

Key Advantages

  • Excellent light transmission & enamel-like fluorescence
  • High flexural strength (360–460 MPa) – stronger than traditional feldspathic
  • Biocompatible and metal-free, no allergy concerns
  • Bondable with adhesive cementation for superior retention
  • Natural shade depth with high translucency options (HT, LT, MO)

Material Science

Flexural strength:360 – 460 MPa
Translucency levels:HT (high), LT (low), MO (medium opalescence)
Fracture toughness:2.5 – 3.0 MPa·m¹⁄₂
Etchability:Excellent with hydrofluoric acid
Bonding protocol:Adhesive resin cement (preferred)
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Lithium disilicate crystalline structure (placeholder)

Esthetic Superiority

  • Chromatic adaptation to adjacent natural teeth
  • Fluorescence under UV light mimics natural dentin
  • Available in 16 VITA classical shades + bleach shades
  • Multilayer block technology for natural cervical-to-incisal gradient
  • Surface luster retention after glaze/polish
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High‑translucency vs medium opacity ingots (placeholder)

Expanded Clinical Scenarios

Anterior esthetic zone crowns, veneers, and diagnostic wax-up driven restorations
Minimally invasive inlays/onlays for moderate defects
Full-arch rehabilitation with high esthetic demands (combined with implants)
Patients with metal sensitivity or desire for “metal-free” smile
Restoring tetracycline stains or fluorosis with high translucency
Tip: Use adhesive bonding (hydrofluoric acid + silane) to achieve maximal retention and fracture resistance, especially for thin veneers.

Emax vs. Competing Materials

PropertyEmax (LS2)Zirconia (monolithic)PFM
Flexural strength360–460 MPa1,200+ MPa~800–1000 (metal)
TranslucencyExcellent (HT/LT)Moderate–high (multi-layer)Opaque core
Bonding potentialAdhesive (gold standard)Limited (conventional or resin-modified)Conventional cement
Indication focusAnterior & esthetic posteriorHigh-stress posterior, long-spanUniversal, cost‑effective
Esthetic ranking★★★★★★★★★☆★★★☆☆
*Emax delivers the highest translucency and bondability, making it the top choice for anterior and minimally invasive restorations.

Fabrication Workflow — Pressed & CAD/CAM

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1. Model & Margin

High-precision die, margin marking

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2. Wax / CAD Pattern

Pressed ingot or milled block design

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3. Press / Milling

Heat-pressed ingot or CAD/CAM milling

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4. Characterization

Individual staining, glaze, final polish

Typical turnaround: 5–7 business days | Rush options available for single anterior cases

Clinical Excellence — Emax Restorations

Lifelike esthetics with superior bonding strength

pre-op emax case placeholder Before

Case #E112: Tetracycline staining, patient desire for full smile makeover

Pre-operative condition: low patient satisfaction with existing composite

post-op emax placeholder After Emax

Emax crowns (#8–9) and veneers (#7–10) – natural translucency

24‑month follow‑up: perfect gingival integration, no chipping

*Representative images for educational purpose; individual results vary.

Adhesive Cementation Protocol

HF etching (20–90 sec) + silane + bonding agent + light‑cured resin cement significantly increases fracture resistance and retention.

Clinical Longevity

Studies show 5‑year survival >97% for crowns, >95% for veneers. Proper bonding and occlusal adjustment are key.

Minimally Invasive

Reduced tooth preparation compared to conventional crowns; inlays/onlays preserve healthy tooth structure.

Frequently Asked Questions — Emax Restorations

Everything about lithium disilicate for exceptional esthetics

Is Emax strong enough for posterior crowns?

Yes, monolithic Emax crowns have sufficient strength for premolars and even molars when adhesive bonded. However, for patients with heavy bruxism, we often recommend zirconia for posterior multi-unit cases, but Emax remains a popular choice for single-unit posterior esthetic restorations.

How does Emax differ from traditional porcelain?

Emax (lithium disilicate) is a reinforced ceramic with higher flexural strength than feldspathic porcelain. It can be fabricated as a monolithic restoration without a metal core, providing superior translucency and bond strength.

Can Emax be used for bridges?

Yes, for anterior 3‑unit bridges with proper connector dimensions (≥ 12 mm²). For longer spans or posterior bridges, zirconia or PFM is recommended due to higher flexural requirements.

What cementation is recommended?

Adhesive resin cement (e.g., Variolink, RelyX Ultimate) after hydrofluoric acid etching and silane application. This creates a chemical bond that reinforces the restoration.

What warranty do you offer on Emax?

Deyu Dental Lab offers a 5‑year limited warranty against material fracture or manufacturing defects. Any fit issues are promptly resolved with remake or adjustment.

Do I need to send a digital scan or impression?

Both are accepted. Digital impressions (iTero, 3Shape, CEREC) streamline the workflow; conventional PVS impressions are also welcome. For esthetic cases, we encourage sending preoperative photos and shade tabs.

Quote / Consultation Form

*Our team will respond within 24 business hours with a detailed quote and case planning recommendations.

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