13 SETUP
36 Planmeca Chairside CAD/CAM solution
User’s manual
13.2 Block selection
The following guidelines will help you with the selection of
the correct block. For detailed information, contact your
local Ivoclar Vivadent or 3M ESPE representative:
• 3M Lava Ultimate is a nano resin ceramic, ideal for all
indications including implant superstructures. Fast milling,
no firing for great results.
• Ivoclar Vivadent categorizes their IPS Empress® block
selection by amount of translucency; LT blocks have
lower translucency and therefore are more opaque,
allowing some visual blocking of the underlying tooth
structure (ideal for full coverage). HT blocks are higher
translucency blocks; they are great for inlays and onlays
where surrounding tooth structure can positively affect the
aesthetic outcome.
• Multi-blocks are blended in colour and translucency from
cervical to incisal and allow for complete aesthetic control.
• IPS e.max is a lithium disilicate glass-ceramic material
that comes in a pre-crystallized state which changes
colour and strength when fired. In its final tooth coloured
state, IPS e.max CAD offers 360 MPa of flexural strength
which is nearly three times the strength of many millable
ceramics available chair side. Adjustments should be
made to the e.max restorations while in the blue stage.
• IPS e.max Impulse are supplied in three Values (Value 1,
2, 3) and two Opal shades (Opal 1, 2). They are mainly
used for veneers. The Value blocks feature different
brightness values: 1 is the lowest and 3 the highest. The
Opal blocks exhibit a decreasing opalescence and
increasing brightness value from 1 to 2.
• Telio CAD blocks are intended for long-term provisional
restorations (maximum wear of 12 months).
• Burn Out Blocks (BOB) are used to manufacture an
acrylic pattern for further fabrication methods utilizing the
burnout technique, including casting and pressing for
inlays, onlays, crowns, as well as other dental
applications.
The block selection chart provides general direction on
what block or category of block is recommended for
different types of restorations. Please understand that the
clinical situations and parameters (preparation, occlusion,
patient compliance) are all factors in the success of the
final restoration regardless of the material.
