Dentaltown December 2024 - 39

Treatment
To fabricate a crown on tooth #20 at the correct
vertical dimension of occlusion (VDO),
we used the STL fi le of our fi nal design and
the copy feature of the Exocad program to
design a lithium disilicate (e.max) crown. We
decided to use e.max for its high strength and
because we wanted to chemically bond the
crown to the tooth structure since the existing
prep tooth was short in clinical height.
An IPS e.max block in shade B1 was chosen to
mill out a crown using our VHF Z4 wet mill.
An IPS e.max CAD Crystal stain and glaze
was used to characterize the crown before
using the Programat CS6 to crystallize the
restoration. Th e intaglio surface of the crown
was etched with 5% hydrofl uoric acid for 20
seconds, then cleaned with 30% phosphoric
acid for 60 seconds. It was rinsed with water
and then air dried before being primed with
silane solution for 60 seconds. Tooth #20
was particle abraded with 27-micron aluminum
oxide at 40 psi, rinsed and blotted dry.
Tooth #20 was then etched and bonded (3M
Scotchbond Universal), and light-cured for 10
seconds. 3M RelyX Unicem 2 in translucent
was used to cement the crown.
To prepare the natural teeth for the composite
restoration, a red-striped football bur was
used to roughen the enamel. All teeth were
particle abraded with 27-micron aluminum
oxide at 40 psi (using a PrepStart) (Fig. 16a-
16o). Tefl on was used on the adjacent teeth.
Etched with 37% phosphoric acid, bonded
using 3M Scothbond Universal Adhesive and
then light-cured. Heated composite (Filtek
Supreme Ultra in Body XW shade) was placed
on vacuum shells in excess. We used a dental
vibration instrument to vibrate composite
through the vacuum shells. Th ey were lightcured
for 60 seconds on the buccal and lingual
surfaces. Th e excess was removed and the
contacts were cleaned with polishing strips
(Contact EZ). Every other tooth was completed
using the same steps with the cast before we
used the cast with all the teeth.
Fig. 11
Fig. 12
Figs. 13a-b
Figs. 14a-b
Figs. 15a-b
DECEMBER 2024 | 39 | DENTALTOWN.COM
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Dentaltown December 2024

Table of Contents for the Digital Edition of Dentaltown December 2024

Dentaltown December 2024 - Intro
Dentaltown December 2024 - Cover1
Dentaltown December 2024 - Cover2
Dentaltown December 2024 - 1
Dentaltown December 2024 - 2
Dentaltown December 2024 - 3
Dentaltown December 2024 - 4
Dentaltown December 2024 - 5
Dentaltown December 2024 - 6
Dentaltown December 2024 - 7
Dentaltown December 2024 - 8
Dentaltown December 2024 - 9
Dentaltown December 2024 - 10
Dentaltown December 2024 - 11
Dentaltown December 2024 - 12
Dentaltown December 2024 - 13
Dentaltown December 2024 - 14
Dentaltown December 2024 - 15
Dentaltown December 2024 - 16
Dentaltown December 2024 - 17
Dentaltown December 2024 - 18
Dentaltown December 2024 - 19
Dentaltown December 2024 - 20
Dentaltown December 2024 - 21
Dentaltown December 2024 - 22
Dentaltown December 2024 - 23
Dentaltown December 2024 - 24
Dentaltown December 2024 - 25
Dentaltown December 2024 - 26
Dentaltown December 2024 - 27
Dentaltown December 2024 - 28
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Dentaltown December 2024 - 32
Dentaltown December 2024 - 33
Dentaltown December 2024 - 34
Dentaltown December 2024 - 35
Dentaltown December 2024 - 36
Dentaltown December 2024 - 37
Dentaltown December 2024 - 38
Dentaltown December 2024 - 39
Dentaltown December 2024 - 40
Dentaltown December 2024 - 41
Dentaltown December 2024 - 42
Dentaltown December 2024 - 43
Dentaltown December 2024 - 44
Dentaltown December 2024 - 45
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Dentaltown December 2024 - 47
Dentaltown December 2024 - 48
Dentaltown December 2024 - 49
Dentaltown December 2024 - 50
Dentaltown December 2024 - 51
Dentaltown December 2024 - 52
Dentaltown December 2024 - 53
Dentaltown December 2024 - 54
Dentaltown December 2024 - 55
Dentaltown December 2024 - 56
Dentaltown December 2024 - Cover3
Dentaltown December 2024 - Cover4
Dentaltown December 2024 - ElitePractice1
Dentaltown December 2024 - ElitePractice2
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