Effectiveness of Home Bleaching Treatment after Resin Infiltrant Application
Oral Health Prev Dent 18 (2020), No. 3 (08.06.2020)
Open Access ORAL MEDICINE, Page 549-554, doi:10.3290/j.ohpd.a44691
Open Access ORAL MEDICINE, Page 549-554, doi:10.3290/j.ohpd.a44691
Purpose: Resin infiltration may be a barrier for bleaching gels. The aim
of this study was to compare dental bleaching effectiveness using
low-concentration gels on heavily or mildly stained teeth that were or
were not treated with resin infiltration agents.
Materials and
Methods: Forty bovine enamel surfaces were submitted to
demineralisation, after which two staining protocols were performed.
Twenty specimens were immersed in a staining broth for 24 h (Lab 1) or 7
days (Lab 2). Ten specimens of each group received resin infiltrant
application following the manufacturer's recommendation. All specimens
were bleached using 15% carbamide peroxide gel for 14 days (8 h daily).
Colour measurement was performed using a reflectance spectrophotometer
at three time points: baseline, after staining, and after bleaching.
Data (CIEDE00) were analysed using Student's t-test (p < 0.05).
Results:
No statistically significant differences were observed in Lab 1 (p =
0.560). For Lab 2, statistically significant differences were detected
(p = 0.031). Once bleaching was achieved to some degree (Lab 2), the
resin infiltrant may have behaved as a semipermeable barrier to the
carbamide peroxide gels.
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