Product Description - 3M ESPE Lava Ultimate Instrucciones De Uso

Lava Ultimate
™
CAD/CAM Restorative for Lava
(en) ENGLISH
Instructions for Use

Product Description

The 3M ™ ESPE ™ Lava ™ Ultimate CAD / CAM Restorative for Lava
and highly esthetic mill block that provides a fast and easy-to-use alternative to porcelain blocks for
milling CAD / CAM indirect restorations. Lava Ultimate restorative is a Resin Nano Ceramic containing
approximately 80% ( by weight ) nanoceramic particles bound in the resin matrix. The ceramic particles
are made up of three different ceramic fillers that reinforce a highly cross-linked polymeric matrix.
The fillers are a combination of non-agglomerated/non-aggregated 20-nanometer ( nm ) silica filler,
non-agglomerated/non-aggregated 4- to 11-nm zirconia filler, and aggregated zirconia/silica cluster filler
( comprised of 20-nm silica and 4- to 11-nm zirconia particles ) .
Lava Ultimate restorative is milled into dental restorations using a Lava
CNC 240 ) ; the restorations should be bonded to tooth structure with adhesive
Lava CNC 500, Lava
™ ™
resin cement.
These Instructions for Use should not be discarded for the duration of product use.
Indications
Lava Ultimate restorative is indicated for inlays, onlays, and veneers. Onlays are defined as a restoration
where the preparation must minimally contain an internal retentive design element e.g. an interproximal or
occlusal box.
Lava Ultimate restorative is not indicated for uses other than those listed.
IMPORTANT : Do not use Lava Ultimate restorative for any type of crown because there exists a
potential for debonding.
Tooth Preparation
Prepare tooth for maximum mechanical retention.
Onlay
Inlay
Veneer
Do
Ensure that inlays and onlays have an internal retentive element
•
All internal edges and line angles should be rounded
•
Non-beveled shoulder finish lines are recommended
•
Mechanically clean any contamination ( e.g., debris, powder, temp cement ) from the tooth prep and rinse
•
with a strong stream of water
Slightly air-dry ( surface should appear glossy )
•
Don't
Do not undercut
•
Do not use any chemical agents after preparation ( e.g., H
•
desensitizers, solvents )
Do not use laser etching
•
Do not use eugenol cement for cementation of temporary restoration
•
Inlay and Onlay
Use traditional inlay and onlay design defined as a restoration where the preparation must minimally
contain an internal retentive design element e.g. an interproximal or occlusal box. Do not undercut. Taper
™
Mills
™ Mills is a strong, wear-resistant,
milling system ( e.g., Lava
™
O , EDTA , bicarbonates, astringents,
2 2
the cavity walls 5–6 degrees to the long axis of the preparation. All internal edges and angles should be
rounded. Incisal/occlusal reduction is 1.5 to 2 mm clearance in centric occlusion and all excursions.
Veneer
Standard reduction of the labial surface is 0.6 mm and 0.4 mm at the gingival portion because the enamel
is thinner in this area. The reduction of the incisal, labial-lingual angle is 0.5 to 1.5 mm. Keep preparation
margins in the enamel. Margins for the veneers should be above the gingival tissues. Chamfer or rounded
shoulder should be used for all preparations. Proximal extensions should be far enough into the proximal
region so margins do not show and have no proximal-gingival undercuts.
Design
There are default settings for the cement gap parameters in the Lava Design software; they can be
modified as required.
Milling and Block Sizes
Selection of the proper size of mill block for the restoration to be milled is the base for completion of all
design steps required for the restoration.
There are two different sized milling blocks available ( M and S ) .
The fabrication steps are described in the instructions for use and user manuals of the different
Lava milling systems. The manufacturer's instructions must be followed.
™
Block Shades and Translucencies
• Bleach
™ Form,
• A1- HT , A1- LT
• A2- HT , A2- LT
• A3- HT , A3- LT
• A3.5- LT
• B1- HT , B1- LT
• C2- LT
• D2- LT
Types of Burrs
• Type 20
• Type 21
• Type 22
• Type 23
The used dental mill must be loaded with each type of burr.
Milling Machines
Lava Ultimate restorative can be milled in all Lava milling machines.
To avoid contamination of Lava Ultimate restorative powder on other materials, cleaning of Lava Form and
Lava CNC 240 after milling Lava Ultimate restorations is mandatory.
Lava CNC 500 does not need to be cleaned after milling Lava Ultimate restorative.
Lava Ultimate CAD / CAM block is supplied to the user in a highly cured state. This material
should not be fired under any circumstances during finishing or build-up/add-on.
Extraoral Polishing Procedure
1 . Clean restoration in an ultrasonic cleaner or steam cleaner; gently blow dry with an air syringe.
2 . Trial fit the final restoration to the preparation. If desired, gently adjust contacts, occlusion and
accentuate grooves using a fine needle diamond.
3 . Grind off sprue with coarse rubber wheel or medium-to-fine bur.
4 . Finish sprue area with medium rubber tool.
5 . Pre-polish with fine rubber tool.
6
. Using a soft bristle brush, spin brush in polishing agent to incorporate paste into brush.
7 . Apply with low speed handpiece, working slowing into surface. The luster quickly appears as the
restoration is polished.
8 . Buff with a muslin rag wheel.
Characterization
Pit and Fissure Staining
To fully maintain the excellent polish retention and stain resistance of Lava Ultimate resin nano ceramic
material, only pit and fissure staining is recommended. Applying light-cure glazes or cervical painting is not
recommended.
1 . Use a bur or sandblast to roughen the restoration surface. If additional grooves are desired, carve with a
fine bur. Maintain minimum wall thickness as described in the sections above ( e.g., Inlay and Onlay ) .
2 . Apply Scotchbond Universal Adhesive to the surface of the restoration and scrub it in for 20 seconds.
™
Alternatively use a silane followed by a bonding agent as per manufacturer's Instructions for Use.
3 . Air thin with oil-free, moisture-free air until the solvent is evaporated and the adhesive no longer moves
over the surface.
4 . Light-cure. Follow the stain manufacturer's Instructions for Use.
Magic Stains ( or other methacrylate-based, light-cured stains ) .
5 . Apply Sinfony
™
6 . Light-cure. Follow the stain manufacturer's Instructions for Use.
7
. Finish with rubber instruments and polishing paste as described in the Extraoral Polishing Section
above.
Bonding
Lava Ultimate Restorations must be bonded with an adhesive resin cement. 3M ESPE recommends
™
RelyX Ultimate Adhesive Resin Cement with Scotchbond
™
in one bottle. RelyX Ultimate cement with Scotchbond Universal adhesive form a highly versatile bonding
system that works for many materials and indications.
Pre-Treatment of Lava
™
Note: Complete all try-in, adjustment, finishing and polishing steps before starting the bonding
pre-treatment.
1
. Clean restoration in an ultrasonic cleaner or steam cleaner. Gently blow dry with air.
. Sandblast with aluminum oxide grain size ≤ 50 μm ( e.g., Cojet
2
( 30 psi ) until entire bonding surface appears matte. Use suction to prevent dusting. Do not etch with HF
or phosphoric acid.
3
. Remove sand with alcohol and dry with oil-free, moisture-free air. Do not use other chemical agents.
4 . Apply Scotchbond Universal Adhesive to the bonding surface of the restoration and scrub it in for
™
20 seconds.
5 . Air thin with oil-free, moisture-free air until the solvent is evaporated and the adhesive no longer moves
over the surface.
Priming for adhesive resin cements other than RelyX
. Apply the primer recommended by your cement. If no primer is recommended, apply silane ( e.g.,
6
Ceramic Primer ) to the bonding surface of the restoration as per silane manufacturer's
RelyX
™
instructions.
Pre-Treatment of Tooth
Note: Prepare tooth according to the instructions for use for maximum retention. Ensure complete
hemostasis and optimum gingival retraction for a dry bonding environment. Do not use any chemical
agents to disinfect, clean or seal the dentin.
1 . To remove debris, thoroughly clean all bonding surfaces with a slurry of pumice and water, rinse and dry.
1
Universal Adhesive, a primer and adhesive
™
Ultimate Restoration
Sand or Rocatec
™
Ultimate Adhesive Resin Cement:
™
Soft ) at two bars
™