Ricerc@Sapienza

BACKGROUND: Iconâ proved to be effective on enamel
hypomineralized lesions such as White Spot Lesion (WSL),
Developmental Defects of Enamel (DDE) and mild cases of
Fluorosis.1, 2, 3 Colour stability over time is the main criticity of
the treatment and a recent systematic review 4 showed that the
clinical efficacy grade of resin infiltration to manage enamel
hypomineralization is low, mainly because the follow-up period
is limited to 12 months (5) and the long-term success rate
is yet unknown. Moreover, most of the published data assessing
the validity of the method are done on in vitro artificial
lesions (4). The aim of the present case report was to evaluate
the objective effectiveness on colour stability at 36 months
of follow-up by resin infiltration in two siblings affected by
celiac disease and presenting developmental defects of enamel
(DDE) on the esthetically relevant teeth of the upper arch.
METHO DS: The study was performed at Sapienza University,
Rome, Italy. Eight permanent upper incisors with DDE
were used in this clinical report at 1st Observation Unit of
Department of Oral and Maxillofacial Sciences, “Sapienza”
University of Rome. One trained operator executed Icon®
infiltration; colour evaluation was performed using a calibrated
reflectance spectrophotometer (SpectroShade, MICRO,
Serial N HDL1407, MHT, Arbizzano di Negrar, Verona, Italy)
at T0 (before treatment), at T1 (12 months), T2 (36 months)
follow-up. To evaluate colour stability, the colour difference
(DE) was calculated: I)DE1 between T0-T1; II)DE2 between
T1-T2 and III)DE3 between T0-T2. Comparison of the DE with
the acceptability threshold (AT) was made.
RESULTS: Overall, the average DE values in the incisalcentral
and gingival sections indicating the amount of colour
change after resin infiltration between T1 and T0 were 4.46,
3.54, 4.76; between T2 and T1 were 1.71, 2.35, 2.28 while
between T2 and T0 were 3.83, 3.74, 5.34. DE values at 36
months are lower than acceptability threshold (3.3).
CONCLUSIONS: The 36 months of follow-up showed a
mean DE of 2.1, on the other hand the colour change after
treatment at 12 months of follow-up was 4.3. Colour variation
at 3 years of follow up was lower than acceptability threshold
indicating an overall good colour stability.