Ricerc@Sapienza

BACKGROUND: Iconâ proved to be effective on enamel
hypomineralized lesion with white demarcated and diffuse
clourimetric alteration, such as White Spot Lesion (WSL),
Developmental Defects of Enamel (DDE) and mild cases of
Fluorosis (1) (2) (3) (4)on the buccal side of aesthetic tooth.
Resin infiltration treatment increases the Refractive Index (RI)
of demineralized enamel. Paris et al. described the rising of
RI on infiltrated lesions, that took on the appearance of the
sound surrounding enamel (5). On the other hand, lesions with
brown demarcated and diffuse enamel defects such as severe
cases of Fluorosis did not seem to have the same response
to Iconâ treatment. The aim of this study was to present the
clinical procedure of pre-treatment with two weeks of home
bleaching with 16% carbamide peroxide take-home whitening
gel and then resin infiltration (1).
Methods: The study was performed at Sapienza University,
Rome, Italy. The patient, a 14 years old male, who was found
with a severe fluorosis on both the upper and lower dental
arches. Upper incisors presented with brown demarcated
defects on central and incisal tooth sections and whitish diffuse
and demarcated enamel alterations on the other teeth.
Custom fitted trays were done in our Lab and a two weeks
home bleaching treatment was performed (3 hours per day).
Before and after two weeks’ photographic images documented
the beaching outcome. After a wash-out period of two weeks,
Icon infiltration clinical procedure was performed according
to manufacturer instructions. Results: The photographic images show the aesthetic
outcome of the treated lesions. The treatments proved to be
effective both on brown and white lesions.
Conclusions: Icon clinical procedure proved to be effective
on hypomineralized lesions with superficial configuration
in the enamel layer. On the other hand, the clinical indication
for lesions presenting a deeper configuration were ceramic
veneers. This clinical case reports on the efficacy of deep
resin infiltration performed on enamel hypomineralized lesion
of traumatic origin.