IPS e.max Press LT – Low Translucency Ivoclar for highly esthetic pressed crowns and bridges
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Référence: H99989
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Livraison 2 à 5 jours Europe
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IPS e.max Press LT – Low translucency ingots
Lithium disilicate (LS2) glass-ceramic press ingots for highly esthetic pressed restorations, specifically designed for crowns and bridges where control of opacity is essential.
Brand Ivoclar
Range IPS e.max Press LT
Reference (SKU) H99989
Price incl. VAT 129.95 €
Flexural strength ~470 MPa Pressed LS2 glass-ceramic LT shades A–D + Bleach BL Ingot sizes S & L for single and multiple units
IPS e.max Press LT ingots – 5 ingots of 3 g
IPS e.max Press LT ingots are supplied in a box of 5 ingots of the same shade and ingot size.
- Allows the fabrication of several restorations, depending on their volume.
- IPS e.max Press ceramic ingots are available in shades A1–D4 and Bleach BL1–BL4 to cover the most common clinical situations in your laboratory.
Indications & clinical applications
IPS e.max Press LT is indicated for most single-unit and small multi-unit restorations when a natural esthetic result is required with sufficient opacity to secure the final shade:
- Anterior and posterior crowns, monolithic or micro-layered.
- Partial crowns, onlays and extended overlays in the posterior region.
- Three-unit bridges up to the 2nd premolar (premolar area).
- Veneers with controlled translucency.
The LT range is ideal for a staining technique or cut-back with IPS e.max Ceram layering, combining function, esthetics and long-term shade stability.
Benefits for the dental laboratory
Thanks to their optimized lithium disilicate crystal microstructure, IPS e.max Press LT ingots provide a flexural strength of around 470 MPa.
Depending on the indication, they allow adhesive, self-adhesive or conventional cementation.
- The laboratory benefits from a wide shade range (A–D and Bleach BL shades) and several translucency levels within the e.max Press family.
- The LT version becomes the reference ingot for most crowns and small bridges.
- Proven pressing workflow, compatible with standard press furnaces and IPS e.max Ceram layering ceramic.
Laboratory workflow – Step 1
IPS e.max Press LT ingots are integrated into a standard pressable ceramic workflow, strictly following Ivoclar parameters and the press furnace specifications.
After selecting the LT shade, the wax-up is completed respecting the recommended minimum thicknesses, in particular on functional cusps and connector areas for bridges.
- Investing is carried out with an investment material compatible with IPS e.max Press, ensuring controlled expansion to guarantee the fit of the pressed restoration.
- The ring is then preheated according to the recommended heating curve and the pressing program corresponding to the ingot type and furnace is launched.
- Controlled cooling helps prevent internal stresses and microcracks.
Laboratory workflow – Step 2
After pressing and cooling, the ring is divested and the sprues are carefully separated.
- The restoration is then gently sandblasted, adjusted and polished, following Ivoclar recommendations to avoid altering the LS2 microstructure.
- Depending on the strategy, the technician can opt for a monolithic stained restoration or a cut-back with IPS e.max Ceram layering.
- Before cementation, the internal surface is prepared by gentle sandblasting, hydrofluoric acid etching and silanization, in accordance with the Ivoclar protocol.
- After preparing the e.max Press restoration, it is recommended to deliver the prosthesis in a sealed pouch to avoid contamination by handling or contact with casts.
Related products
Main technical characteristics
Summary of the key technical data for IPS e.max Press LT glass-ceramic.
| Material | Pressed lithium disilicate (LS2) glass-ceramic. |
|---|---|
| Translucency | LT – Low Translucency (reduced translucency with increased brightness and chroma). |
| Flexural strength | Approx. 470 MPa (indicative value according to Ivoclar data for IPS e.max Press). |
| CTE (25–500 °C) | 10.5 ± 0.5 × 10-6/K (approx.). |
| Indications | Anterior/posterior crowns, partial crowns, onlays/overlays, 3-unit bridges in the premolar region, veneers, hybrid abutments and hybrid abutment crowns. |
| LT shades | Shades A–D (e.g. LT A1, LT A2, LT A3, LT A3.5, LT B1, B2, B3, C2, D3) + 4 Bleach BL shades (BL1 to BL4), depending on the kit configuration. |
| Ingot sizes | Small (S) and Large (L) ingots, to be selected according to the number of units to be pressed. |
| Techniques | Monolithic, surface staining, or cut-back with IPS e.max Ceram layering. |
| Cementation | Depending on the clinical situation: adhesive resin cementation, self-adhesive cementation or compatible conventional cement, following Ivoclar recommendations and mechanical requirements. |
Delivery
Delivery: IPS e.max Press LT ingots, box of 5 pieces – shade of your choice.
FAQ – IPS e.max Press LT for the dental laboratory
When should IPS e.max Press LT be chosen instead of HT or MT ingots?
The choice between IPS e.max Press HT, MT and LT primarily depends on the required level of translucency and the clinical situation.
HT (High Translucency) ingots are designed for very translucent, smaller restorations such as inlays and certain veneers, when a strong “chameleon effect” and seamless integration with enamel are desired.
- MT (Medium Translucency) ingots sit between HT and LT and are ideal for many crowns and partial crowns when the stump shade is harmonious and a balanced brightness is desired.
- LT ingots, due to their reduced translucency, are particularly suitable for posterior crowns, three-unit bridges in the premolar region and veneers on slightly discolored or restored teeth.
- They provide greater control over the final shade by limiting show-through from the underlying substrate, while maintaining a natural esthetic result after staining or cut-back with layering.
What are the key design rules for IPS e.max Press LT?
Successful clinical results with IPS e.max Press LT depend on respecting minimum thickness requirements and universal design principles for pressable ceramics.
- Ivoclar recommends sufficient wall thickness in functional areas, rounded internal angles and the absence of sharp edges to limit stress concentration.
- For posterior crowns, adequate occlusal reduction is essential to maintain the prescribed ceramic thickness, in particular on load-bearing cusps.
- Three-unit bridges in the premolar region must respect the minimum connector cross-sections defined by the manufacturer.
- In the laboratory, the wax-up should reflect these criteria from the diagnostic phase, integrating the intended cementation protocol (adhesive or conventional) and the available dentine support.
- Once these parameters are mastered, LT ingots provide an excellent combination of strength, chromatic stability and precise fit after pressing.
What cementation protocol should be recommended for IPS e.max Press LT?
IPS e.max Press LT offers high cementation versatility, which should be selected according to the indication, preparation geometry and mechanical requirements.
- For veneers, inlays and onlays, adhesive resin cementation (with internal etching using hydrofluoric acid, silanization and an appropriate adhesive system) remains the gold standard to maximize bond strength.
- For crowns and certain three-unit bridges, self-adhesive or conventional cementation may be considered when the preparation provides sufficient mechanical retention and the Ivoclar protocol is followed.
- The laboratory should clearly indicate to the clinician which press material has been used (LT), which surface pretreatment has been performed and which cement families are compatible.
- This communication supports a reproducible clinical protocol, reduces the risk of postoperative sensitivity and contributes to the long-term success of the restoration.
IPS e.max Press LT – Low Translucency Ivoclar for highly esthetic pressed crowns and bridges