anterior captek
TRANSCRIPT
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Instructions shown in thefollowing sequence are completed
using the rotary instrument in the
Captek/Brasseler Crown and
Bridge kit.
Purchase of this kit is not
required yet may be
helpful. Call your
laboratory, Captek or
Brasseler representative
for additional questions
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One of the many benefits of Captek crowns and bridges is the
versatility that the dentist has when choosing a preparation stylethat is comfortable for him/her and appropriate for the tooth being
treated and the desired esthetic outcome of the case.
The following sequence shows a variety of margin
designs along with the possible Captek copings that
can be fabricated on each design.
A deep Chamfer(Shoulder), Modified chamfer, and a
Shoulder-Bevel will be shown.
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Captek can be cemented with the
doctors cement of choice. Proper development of resistance and
retention form is still important to
follow. Excellent research on
resistance and retention form is
available upon request through your dental laboratory or Captek.
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Modified Chamfer
A basic Chamfer is astandard margin edge
design that can be
utilized for Captek
crowns where the
metal can be brought
to the edge or,
if the exit angle of
the margin is cut to a
90 degree angle, a porcelain margin
can be prescribed.
Chamfer/Shoulder
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After breaking contact and facial depth cuts
with 169L, The 5856 016 Super course is usedfor gross reduction. Initial reduction is ended
at or above tissue height. The depth cuts can
also be accomplished with the 5856 016 blk.
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Final Finishing of
Chamfer/Shoulder is
accomplished by placing a cordand prepping to the cord with
856 016 med.
Captek Crown with or
without a Porcelain margin
could be placed right at the
tissue or .5 to 1 mm below predictable tissue post-
preparation height.
1.
2.
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With any margin design, proper consideration should be given to
biological width, tissue type, esthetic
desires, retentive form and occlusalconsiderations.
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Modified Chamfer Margin: Gross
reduction with the 5856 016 Super Course. The final
margin design can be accomplished with the 878K
016 med. Shown below.
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A thin cord is placed. Margin is then finalized and
refined with the 878K 016 med.
With a Modified Chamfer margin, the Captek metal should
extend to the edge and be covered with porcelain or left as an
exposed Captek collar. Margin placement should be .5 to
1mm subgingival when collar needs to be invisible to
patient.
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With any margin design, reduction for anterior teeth is
necessary on three planes on the labial surface. Proper
facial reduction will result in attaining the full esthetic potential of Captek crowns and bridges.
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Beveled shoulder prep…
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Gross reduction is done and shoulder is placed to the tissue height
with 5856 016 SC.
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Cord is placed and bevel is place sub gingival using 30006 60 016 med.
Beveled margin is ideal when using a small Captek exposed collar. Not ideal
when extending porcelain to the margin edge.
Due to the healthy tissue condition surrounding Captek restorations,
practitioners are less hesitant to place small metal bands on Captek
crowns even in the anterior. Bands or collars need to be place
appropriately in the sulcus so as to be invisible to patient.
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Shoulder
Modified Chamfer
Beveled edge
All acceptable margin designs with Captek
Knife edge, not shown, is also an acceptable margin design
for Captek restorations. Consult with your Captek Lab for
further information and opinions.
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Porcelain Margin
or metal to edge
is possible
Captek metal to edge
Metal collar necessary
Captek coping possibilities with each margin design
Metal to the edge with a metal band or covered with porcelain
is possible with Knife edge.
Shoulder Modified Chamfer
Beveled edge
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Case Review
With Dr. John Cranham
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Post operative picture. Treatment plan required placement
of full coverage restorations from tooth numbers 5-13 and
21-28
Captek crowns were chosen as restoration of choice
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Occlusion should be
evaluated prior to
preparation. 1.5mmminimum of occlusal
clearance is necessary for
all PFM restorations with
full porcelain coverage
including Captek.
Rotation of teeth to be
prepared should be
noted. Rotated or tilted teeth must be
prepared accordingly
if alignment change is
desired.
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Proximal slices with the
169L carbide are
accomplished quicklyand safely. The 169L
will help eliminate over
tapering of the final
preparation
Incisal reduction of 2mm
is necessary. The 330mw
carbide could be used as
a depth cutting guide.
The cutting length of the
330mw is 2.2mm.
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The 5856 016 blk (super course)
can be used for depth cuts
Anterior reduction usually is
necessary in 3 distinct planes.
5856 016 blk dimensions:1.6 mm
1.25mm
1.5mm buccal reduction inthe facial incisal tapering to
.8 mm reduction at the
gingival can provide predictable results with
Captek crown and/bridges.
Consult your certified Captek
lab for their input and
opinion.
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Depth cuts complete
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Depth cuts (discussion)
In the posterior preparation sequence, Dr. Cranham
showed depth cuts with the 169L. The 169L is .9mm
wide. Taken to full depth, this guide, when gross
reduction is completed, should produce minimum
reduction of 1mm buccally and lingually. This is a very
conservative preparation depth and may be helpful in
situations where minimal reduction is the only option.
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Gross reduction is finished with the 5856 blk.
Smoothing is accomplished with medium grit rotary
instruments.
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Lingual margin reduction
can be accomplished
with a variety of rotaryinstrument shapes.
Medium or fine course
diamonds are necessaryto achieve proper
smoothness.
Lingual reduction of 1.5mm is important for
proper material thickness
and for the technician todevelop proper
functionality to the desired
restoration. It is also
required for maximumrestoration strength.
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With any margin design, proper
consideration should be given to
biological width, tissue type, estheticdesires, retentive form and occlusion.
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Retraction can be done with the restoring doctors
method of choice. Effective retraction will help define
margin placement, and impression accuracy.
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Preparation finished
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occlusal registrations
completed.
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Temporization
Before
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1 week post cementation
Before
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Before After
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3 weeks post placement
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Captek is an every day choice for Esthetic, Versatile,Strong, plaque resistant crowns and bridges.
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