Dentaltown November 2017 - 65

Fig. 1. The preoperative smile view
reveals an unattractive smile.
1. Clean, etch and add
adhesive to mesial of #9.

4. Add composite to MF of
#8, just shy of #9, and cure.

Fig. 2. The retracted 1:1 view shows
the worn and discolored composite
restorations between teeth #8 and #9.
2. Add composite to MF
of #9 and cure.

5. With a mylar strip, add composite
to ML #8 and pull through to the facial.

Fig. 3. A custom shade guide was
used to select the replacement.

3. Add composite to ML
of #9, cure and contour.
Check width.

6. Completed diastema
closure.

Fig. 4. The old bonding was removed.

Fig. 5. This diagram shows a step-by-step procedure for the diastema closure.

A digital caliper was used to measure the
distal-to-distal distance between teeth #8 and
#9. This measurement (16.92 millimeters)
was divided in half to obtain the individual
width of each central incisor (8.46mm).
The old, discolored bonded restorations
were removed (Fig. 4) with a fluted carbide
bur (ET9 from Brasseler). The teeth were
cleaned off with pumice (no fluoride) and
the mesial-facial of both teeth was lightly
abraded with a coarse Sof-Lex XT disc

(3M ESPE). This was not to reduce tooth
structure, but to remove the aprismatic,
outer surface layer of enamel, thus resulting
in a stronger bond.4 Packing cord (OO,
UltraPak from Ultradent) was placed on
the mesial-facial of #8 and #9. Teflon tape
was placed on #8 to protect it from etch and
bonding agent5,6 (Fig. 5).
Tooth #9 was etched with 35 percent
phosphoric acid (Ultra-Etch from Ultradent)
and rinsed with water (Fig. 6, pg. 66). Bonding
dentaltown.com \\ NOVEMBER 2017

65


http://www.dentaltown.com

Table of Contents for the Digital Edition of Dentaltown November 2017

Dentaltown November 2017 - Intro
Dentaltown November 2017 - Cover1
Dentaltown November 2017 - Cover2
Dentaltown November 2017 - 1
Dentaltown November 2017 - 2
Dentaltown November 2017 - 3
Dentaltown November 2017 - 4
Dentaltown November 2017 - 5
Dentaltown November 2017 - 6
Dentaltown November 2017 - 7
Dentaltown November 2017 - 8
Dentaltown November 2017 - 9
Dentaltown November 2017 - 10
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Dentaltown November 2017 - 12
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Dentaltown November 2017 - 120
Dentaltown November 2017 - Cover3
Dentaltown November 2017 - Cover4
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