E-max crowns : [Everything you need to know]

E-max crowns : [Everything you need to know]

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Dental crowns are this magical dental prosthetics that
should restore back the aesthetic, strength, and functionality as close as possible to
a natural tooth. Crowns are indicated to restore fractured, crooked, stained teeth. They can be single crowns, bridges, or dental implant
crowns.

E-max crowns, Zirconia, Porcelain fused-to-metal, are all results
of the technological progress in dentistry
. However, it was difficult for many decades to find the perfect material that has all the advantages, without any cons and for an affordable cost. With the progress of technology in
dentistry, we are now able to make one of the best dental crowns: the
e-max crowns.

Older generations of crowns, like ceramic metal mix crowns, have many disadvantages despite
their affordable price. They result in a poor aesthetic appearance, allergic problems and too much damage for the natural tooth
structure. 

The new generation of dental crowns is all ceramic, like Zirconia and E-max
crowns, both of these types give very pleasing clinical results.

E-max crown system

The E-max system is made based on Lithium disilicate glass that has been
harvested for its excellent aesthetic
appearance, durability and strength. This makes E-max crowns
very strong and natural. Your dentist needs to remove 
only a thin layer of your tooth structure, unlike porcelain-metal mix crowns that
needed the removal of a lot of tooth structure.

E-max crown indications

– Tooth fracture: tooth fracture, caused by trauma or decay, can be restored with
an e-max crown.
–  Twisted teeth: the tooth shape and axial position can be corrected using
e-max.
– Fragile tooth: teeth that had been treated endodontically tend to become more
fragile after some time.
– Deep intrinsic discoloration: the aesthetic features of e-max can hide even
the deepest tooth discoloration.

Types of e-max restorations

With lithium desilicated you can make:

  • ·    Inlays and onlays
  •       Minimally invasive crowns
  • ·    Implant superstructures
  • ·    Hybrid abutments
  • ·    Three-unit bridges and up
  • ·   Veneers

How are e-max Crowns made?

Your dentist prepares your tooth to receive an e-max crown
by removing a very thin dentine layer from the tooth, then a digital impression
using a 3D intra-oral scanner is made, this scan is transferred to a computer.
With the help of artificial intelligence, your future crown will be designed.

After that, a 3D print machine will cut through the monolithic block of Lithium
disilicate to produce the desired shape of the prosthesis. The shade has been
previously chosen by the dentist.

When the print is finished, the dentist adjusts the crown and seals it, sometimes you can do all of this in one appointment, which saves you time.

The advantages of e-max crowns


  •  Excellent aesthetics: An
    important requirement for all dental crowns is that they should match the
    natural tooth translucency and shade, e-max crowns have the closest aesthetic appearance
    to natural teeth.
  •    High strength: Lithium
    disilicate is a very strong material which makes e-max-crowns very durable.
  •    Large extensive indication
    range:
    Inlays and onlays, crowns,
    Implant superstructures, Hybrid abutments, bridges and Veneers can all be made
    from lithium disilicate.



  •    Minimally invasive
    preparation:
    The ceramic preparation doesn’t require the
    removal of much tooth structure, which makes e-max and zirconia a very conservative preparation.



  •    Clinical long-term success
    and scientifically proven results:
    almost 3 decades of researches all showed
    successful results in long term efficiency of e-max crowns.
  •    Large shades choice: the
    monolithic block of Lithium disilicate comes in different shades depending on
    the shade of the restored tooth and its adjacent.
  •    Adhesive, self-adhesive or
    conventional cementation depending on the indication.
  •    Ability to be
    Milled
    : Can be quickly fabricated by using CAD-CAM
    milling which results in fast fabrication with the highest precision.

Disadvantages
of e-max crowns

  • High
    cost:
    the cost of e-max crowns is higher than zirconia and porcelain-metal mix
    crowns.
  • Risk
    of fracture
    in the posterior area: e-max crowns are very thin and therefore
    break easily in the posterior area, which makes them more suitable for restoring the front teeth.
  • E-max
    bridge can be fragile: bridges of 3 and more crowns can be very fragile and
    will risk breaking, especially in the posterior area because the masticatory forces in the molar area is higher than the front teeth area.

E-max vs Zirconia crowns

E-max crowns:

  • Lithium Disilicate glass, an
    all-ceramic system.
  • Better aesthetical results.
  • More translucid.
  • Thinner.
  • Larger shade choice.
  • Very realistic.
  • Fragile.
  • Great results in front teeth.

Zirconia crowns:

  • Made of Zirconium Dioxide.
  • incredibly strong.
  • Difficult to crack.
  • Less translucid.
  • Opaque shades.
  • Great results in posterior teeth.
  • lack of capability to bond zirconia.

 

E-max crowns before and after


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e-max crowns before and after pictures : case n1
 Case n1: 
This patient received 10 e-max crowns on his maxillary teeth, the result
is whiter, straighter teeth and symmetrical smile.
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e-max crowns before and after pictures : case n2
On the left side of the picture, the patient had 2
porcelain-metal mix crowns on the central maxillary incisors, the shade is too
opaque and unnatural, the crowns are not well adapted on the gingiva and we can
notice the metal part of the crown which all gives an unsightly appearance. The
laterals and canines are a little bit crooked.

On the after side, the patient
received 6 e-max crowns that are well placed, the shade looks very natural and
is in harmony with the rest of the teeth.

 

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E-max crowns before and after : case n3


 Before receiving the new crowns, the patient had deep intrinsic stains
on his upper front teeth combined with some bad composite restorations, and 2
opaque zirconia crowns on the laterals. On the after picture, you see how the
e-max crowns succeeded in restoring the form of the teeth, the translucidity is excellent and the bite is so much better.

 

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e-max crowns before and after : case n4

 The patient here had 2 complains, he desired a brighter teeth shade,
and to correct his occlusion by straightening his teeth ( the patient
refused an orthodontic treatment). The result after putting 10 e-max crowns
was a magnificent occlusion and much more brighter teeth.

 

The cost of e-max crowns

E-max crowns are one of the
best options out there and this comes with a higher price than the traditional
dental crowns, and as we all know, it is impossible to set one price for e-max
crowns because it depends on the country, dentist, the dental laboratory and
many other things. But we tried to bring you an estimate of e-max crowns price in
different countries this year:

 

United States: $1000 to $1700

United Kingdom: £450 to £1400

Australia: +$1,450

India: +$300

Philippines: +$450

Turkey: £ 229 – £ 400

     Mexico: +$400

What’s better than e-max crowns?

 

IPS e-max ZirPress

is a fluorapatite glass-ceramic
ingot which is pressed onto zirconium oxide, this combination improves the strength of e-max, making it possible to fabricate strong, long dental bridges
with minimized fracture risks. Nut this new technique doesn’t come with long
term efficiency studies yet.

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