Abstract
Objective The aim of this clinical randomized double-blind split-mouth study was to assess the effectiveness of a 6% hydrogen peroxide with nitrogen-doped titanium dioxide light activated bleaching agent. Method 31 patients were treated with: one upper hemiarcade with a 35% hydrogen peroxide bleaching agent and the other hemiarcade with a 6% hydrogen peroxide. Two applications were completed each treatment session and three sessions were appointed, with one week interval between them. Tooth colour was registered each session and 1 week and 1 months after completing the treatment by spectrophotometer, registering parameters L∗, a∗and b∗, and subjectively using VITA Classic guide. Tooth sensitivity was registered by VAS and patient satisfaction and self-perception result was determined using OHIP-14. Tooth colour variation and sensitivity were compared between both bleaching agents. Results Both treatment showed a change between baseline colour and all check-points with a ΔE = 5.57 for 6% and of ΔE = 7.98 for the 35% one month after completing the (p < 0.05). No statistical differences were seen when subjective evaluations were compared. Also, no differences were seen in tooth sensitivity between bleaching agents. OHIP-14 questionnaire demonstrated a significant change for all patients after bleaching. Conclusions A 6% hydrogen peroxide with nitrogen-doped titanium dioxide light activated agent is effective for tooth bleaching, reaching a ΔE of 5.57 one month after completing the treatment, with no clinical differences to a 35% agent neither in colour change or in tooth sensitivity. Clinical significance A low concentration hydrogen peroxide bleaching agent may reach good clinical results with less adverse effects.
Original language | English |
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Pages (from-to) | 965-972 |
Number of pages | 8 |
Journal | Journal of Dentistry |
Volume | 43 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2015 |
Keywords
- Bleaching teeth
- Clinical randomized trial
- Effectiveness
- Low concentration
- OHIP-14
- Titanium dioxide
ASJC Scopus subject areas
- General Dentistry