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Dental B40 Glass Ceramic Lithium Disilicate

Lithium disilicate is a strong, all-ceramic material available in ingots for pressing (IPS e.max Press) and in blocks that can be milled with several different CAD/CAM milling machines (IPS e.max CAD). It’s available in many shades, both chromatic (dentin) and bleach, and has a wide variety of uses including limited-size bridges, anterior and posterior full contour crowns, inlays and onlays, veneers, minimal prep veneers, telescopic crowns for masking dark preparations and adding dentine when inadequate, and telescopic bridges for supporting veneers within smile design.

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Product Details

Products Description

As all-ceramic materials become stronger, the need for both metal and zirconium frameworks will diminish and we’ll see the demise of some outdated and costly fabrication techniques. For instance, the use of frameworks for single-unit restorations is all but obsolete in my opinion, thanks in large part to the fact that lithium disilicate restorations can be adhesively bonded or cemented in the traditional way. Fabricating fully anatomical restorations without frameworks is the future of dental technology.

     E.max CAD HT - The minimally invasive block：Given their high translucency which is similar to that of natural enamel, HT blocks are ideal for the fabrication of small restorations (e.g. inlays, onlays). Restorations made of HT blocks convince user with their true-to-nature chameleon effect and the exceptional adaptation to the remaining tooth structure. E.max CAD LT - The versatile block：Given their low translucency which is similar to that of the natural dentin, LT blocks are ideal for the fabrication of larger restorations (e.g. posterior crowns). Restorations made from LT blocks convince users with their lifelike brightness and chroma. This prevents the incorporated restorations from greying. E.max CAD MO - The classical block：Given their particular opacity, MO blocks are ideally suitable for the fabrication of frameworks on slightly discoloured preparations. They are primarily used in the dental laboratory.

Production process

Advantage

1. Excellent esthetics and high strength of 530 MPa2, efficiently obtained in the dental practice 2. Full range of processing options for your chairside CAD/CAM system

3. High aesthetic repair effect 4. High chemical stability and binging strength

5. Easy milling,prolong the service life of burs 6. Simple and rapid crystallization process to reduce operating time

7. Adhesive, self-adhesive and conventional cementation options, despending on the restoration type 8. Every time without
glaze,the unique color change effect to ensure perfect repair effect

Crystallization and Glaze

     A porcelain furnace is used to crystallize the restoration to its final state. Depending on the final aesthetic requirements of the restoration,an appropriate heating program should be chosen.Crystallization and glazing are achieved in two steps,displayed in the two charts below depending on the type of restoration. Sintering program for crystallization only or crystallization together with glazing,Program 1 or program 2 is available.

One - step process

Crystallization only or crystallization together with glazing
Starting temp/℃	Dry time /mm:ss	Temp increasing rate/℃	Holding temp /℃	Holding time /℃	Vacuum start /℃	Vacuum finished /℃
400	00：30	40	840	07：00	550	840

Two - step process

Crystallization only or crystallization together with glazing
Starting temp/℃	Dry time /mm:ss	Temp increasing rate/℃	Holding temp /℃	Holding time /℃	Vacuum start /℃	Vacuum finished /℃
400	06：00	90/30*	820/840	00：10/07：00	550/820	820/840

Glzaing process

Glazing process
Starting temp/℃	Dry time /mm:ss	Temp increasing rate/℃	Holding temp /℃	Holding time /℃	Vacuum start /℃	Vacuum finished /℃
400	00：30	40	840	03：00	550	840

Cutting Sample display

Feedback

These restorations can be stained and glazed and/or cut back, require less ceramic layering and can be fabricated both digitally and with lost wax techniques. The result is a more esthetic restoration that’s easier to replicate consistently with less expense and less labor. Another distinct advantage is the elimination of using dissimilar materials which often have completely different thermal characteristics that can impact the quality of the restoration.

If you have any questions about glass ceramics, you can contact me！

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