PMC6079618_01
Stained enamel opacity related to traumatic dental injuries (a). The underestimation of the presence of stain into the lesion have led to unaesthetic outcomes after performing resin infiltration (c). Note the presence of enamel cracks (white arrow), observed under transillumination, which could constitute a possible pathway for chromatogenic substances (b). This case is considered a failure.
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fig1
However, for the first patient (Figure 1(a)), due to the lack of evidence of staining, solely, resin infiltration procedure was adopted.
PMC6079618_02
Yellowish lesion related to molar incisor hypomineralization (a). The combination of in-office bleaching (38% H2O2) (b) applied on a single visit for 15 min (c) and resin infiltration procedure were sufficient to end up with an esthetically satisfying result. By the end of the infiltration step, the incisal part of the lesion was not completely infiltrated probably due to excessive depth of the lesion at this area (d).
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fig2
PMC6079618_03
Brownish lesion related to molar incisor hypomineralization (a). After one week of at-home whitening using 10% carbamide peroxide gel (b), the stain was partially removed and has disappeared completely by the end of the bleaching treatment (c). Immediate result after performing resin infiltration (d). 3 months after treatment (e). Significant improvement in the aesthetic appearance of this patient's teeth was achieved, and the case was thus considered to be a success.
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fig3
PMC6079618_04
PMC6079618_05