Effects of tooth whitening agents and acidic drinks on the surface properties of dental enamel / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 530-532, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-315917
ABSTRACT
<p><b>OBJECTIVE</b>Using tooth whitening agents (bleaching clip) in vitro and acidic drinks, we conducted a comparative study of the changes in enamel surface morphology, Ca/P content, and hardness.</p><p><b>METHODS</b>Tooth whitening glue pieces, cola, and orange juice were used to soak teeth in artificial saliva in vitro. Physiological saline was used as a control treatment. The morphology of the four groups was observed under a scanning electron microscope (SEM) immediately after the teeth were soaked for 7 and 14 d. The changes in Ca/P content and microhardness were analyzed.</p><p><b>RESULTS</b>The enamel surfaces of the teeth in the three test groups were demineralized. The Ca/P ratio and the average microhardness were significantly lower than those of the control group immediately after the teeth were soaked (P < 0.05). The Ca/P ratio and microhardness gradually increased after 7 d. No significant difference was observed between the control group and the test groups after 14 d (P > 0.05).</p><p><b>CONCLUSION</b>Bleaching agents caused transient demineralization of human enamel, but these agents could induce re-mineralization and repair of enamel over time. Demineralization caused by bleaching covered a relatively normal range compared with acidic drinks and daily drinking.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Saliva, Artificial
/
Surface Properties
/
Tooth Bleaching
/
Dental Enamel
/
Tooth Bleaching Agents
/
Hardness
/
Hydrogen Peroxide
Limits:
Humans
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2013
Type:
Article
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