Biomedical Engineering Reference
In-Depth Information
ceramics reinforced with 35% by volume of leucite (alumino-silicate)
crystals (Figure 9.9). Thus, they can be used for a larger range of
indications, particularly all kinds of single unit and bonded restorations,
partial or full coverage, anterior or posterior (Figure 9.10). Restorations
can be either monolithic and simply tinted, or bilayered, i.e. veneered
with a feldspathic ceramic, in order to promote either mechanical or
esthetic performance, respectively.
Figure 9.8.
SEM image of a lithium disilicate reinforced glass ceramic
(IPS e.max Press). The glass phase has been eliminated by etching:
only the characteristic elongated crystals are visible. With the courtesy
of Ivoclar-Vivadent (Schaan, Liechtenstein)
Figure 9.9.
SEM image of a leucite reinforced glass ceramic (IPS Empress Esthetic).
With the courtesy of Ivoclar-Vivadent (Schaan, Liechtenstein)
