The effect of long-term use of tooth bleaching products on the human enamel surface
The aim of this in vitro study was to evaluate the long-term effect of bleaching on human enamel. Four groups of enamel specimens were prepared (n = 20): group 1: bleaching with Opalescence Boost [40% hydrogen peroxide (H2O2), 3 × 20 min/week]; group 2: control group (the specimens were stored in human saliva); group 3: beaching with Vivastyle Paint on Plus (6% H2O2, 2 × 10 min/day), and group 4: bleaching with Opalescence PF 16% [16% carbamide peroxide (CP), 6 h/day]. After each bleaching session the specimens were stored in human saliva. Knoop microhardness and surface roughness were measured: before bleaching, after 2-week and after 8-week bleaching. After 2-week treatment, surface roughness was significantly increased in all experimental groups (p < 0.05), while among them no significant difference was found (p > 0.05). The roughness changes exerted after 8-week bleaching were not significantly higher than the ones after 2 weeks (p > 0.05). After 8-week treatment, the increase in roughness caused by 16% CP was significantly higher (p < 0.05) than the one caused by 40% H2O2. Microhardness increased in all groups including control; however, only 40% H2O2 increased the microhardness significantly (p < 0.05). The effect of bleaching on enamel was not shown to be dependent on the method or the H2O2 concentration. Bleaching with CP 16% resulted in higher roughness than bleaching with H2O2, while 40% H2O2 caused the higher microhardness increase. The present study showed that in-office bleaching with 40% H2O2 seems to be at least as safe as home bleaching as far as their effects on human enamel are concerned.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:106 |
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| Enthalten in: |
Odontology - 106(2018), 1 vom: 10. Jan., Seite 64-72 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Polydorou, Olga [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 27.08.2018 Date Revised 02.12.2018 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1007/s10266-017-0308-3 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM272288144 |
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| 245 | 1 | 4 | |a The effect of long-term use of tooth bleaching products on the human enamel surface |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The aim of this in vitro study was to evaluate the long-term effect of bleaching on human enamel. Four groups of enamel specimens were prepared (n = 20): group 1: bleaching with Opalescence Boost [40% hydrogen peroxide (H2O2), 3 × 20 min/week]; group 2: control group (the specimens were stored in human saliva); group 3: beaching with Vivastyle Paint on Plus (6% H2O2, 2 × 10 min/day), and group 4: bleaching with Opalescence PF 16% [16% carbamide peroxide (CP), 6 h/day]. After each bleaching session the specimens were stored in human saliva. Knoop microhardness and surface roughness were measured: before bleaching, after 2-week and after 8-week bleaching. After 2-week treatment, surface roughness was significantly increased in all experimental groups (p < 0.05), while among them no significant difference was found (p > 0.05). The roughness changes exerted after 8-week bleaching were not significantly higher than the ones after 2 weeks (p > 0.05). After 8-week treatment, the increase in roughness caused by 16% CP was significantly higher (p < 0.05) than the one caused by 40% H2O2. Microhardness increased in all groups including control; however, only 40% H2O2 increased the microhardness significantly (p < 0.05). The effect of bleaching on enamel was not shown to be dependent on the method or the H2O2 concentration. Bleaching with CP 16% resulted in higher roughness than bleaching with H2O2, while 40% H2O2 caused the higher microhardness increase. The present study showed that in-office bleaching with 40% H2O2 seems to be at least as safe as home bleaching as far as their effects on human enamel are concerned | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Home bleaching | |
| 650 | 4 | |a In-office | |
| 650 | 4 | |a Microhardness | |
| 650 | 4 | |a Roughness | |
| 650 | 4 | |a Tooth bleaching | |
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| 650 | 7 | |a Peroxides |2 NLM | |
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| 700 | 1 | |a Spraul, Mathias |e verfasserin |4 aut | |
| 700 | 1 | |a Vach, Kirstin |e verfasserin |4 aut | |
| 700 | 1 | |a Hellwig, Elmar |e verfasserin |4 aut | |
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