Dentaltown November 2022 - 47

Check out Dr. Jeanette MacLean's online CE course
on minimally invasive treatment for enamel defects
The author of this case study, Dr. Jeanette MacLean, used Icon resin infi ltration treatment
on this same patient's maxillary incisors back in 2014-which illustrates Icon's stable longterm
results and the ability to whiten teeth after they've been treated. To learn more and
earn 1.5 CE credits, check out MacLean's online CE course " Less Is More: Minimally Invasive
Cosmetic Treatment Options for Enamel Defects " at dentaltown.com/ce.
Figs. 1a and 1b
Fig. 2
Figs. 3a and 3b
study procedures; or any condition or disease
that could be expected to interfere
with the study.
Pretreatment assessment: A baseline
enamel shade of was recorded using the
VITA Toothguide 3D-Master shade guide.
The patient's pretreatment shade was 3M2.
Informed consent was obtained, pretreatment
photographs (Figs. 1a and 1b) were
taken and the patient was provided a tube
of the whitening product, an applicator
and a LED light accelerator.
Materials: Highly active peroxide
droplets in a water-resistant hydrating
base to protect teeth from sensitivity. The
product
(Crest Whitening Emulsions,
P&G) contains petrolatum, water, hydrogen
peroxide, fl avor, sucralose and sorbitan
palmitate.
Procedure: The patient was instructed
to squeeze the tube to dispense the emulsion
material onto a wand applicator, covering
the entire tip, and then to apply the
emulsion directly and liberally, covering
all surfaces of the teeth (Fig. 2), using as
many coats as needed to fully cover all the
teeth she wanted to whiten. She was told
to avoid eating or drinking for 30 minutes
after application.
To enhance the whitening effects, the
patient was instructed to use the LED accelerator
light by pressing two buttons on
the side of the light simultaneously, releasing
the buttons, then holding the light
against her teeth for three minutes or until
the light turned off. She was told to repeat
the application up to four times a day, for
a minimum of 36 applications within four
weeks.
Follow-up assessment: The patient
returned after two weeks (14 days), and a
posttreatment enamel shade was recorded
using the same VITA shade guide. The patient's
shade was now 1M2 (Figs. 3a and
3b). The patient said she was able to apply
the whitening product three times a day
and used the LED accelerator twice a day.
She reported zero hypersensitivity and was
very happy with the outcome of whiter
teeth (Fig. 4).
Conclusions: A peroxide-based whitening
product in a hydrating base medium
is an excellent over-the-counter option for
patients to whiten their teeth conveniently
and affordably without inducing sensitivity.
This offers a nice alternative to other
products currently on the market such as
brush-on pens, strips and trays.
Author disclosure: This research was
supported by P&G. ■
Fig. 4

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Dentaltown November 2022

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