The effect of cold-light-activated bleaching treatment on enamel surfaces in vitro.
The effect of cold-light-activated bleaching treatment on enamel surfaces in vitro.
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DOI：
10.1038/ijos.2012.70
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发表时间：
2012-12
影响因子：
14.9
通讯作者：
Li, Wei
中科院分区：
文献类型：
--
作者：
Shi, Xin-Chang;Ma, He;Zhou, Jing-Lin;Li, Wei
本研究旨在评价冷光漂白处理后牙釉质的晶体和表面微观结构。12颗健康人前磨牙分为近中颊侧（LP组）、远中颊侧（P组）、近中舌侧（NP组）和远中舌侧（L组）。这四组分别使用标准冷光漂白程序、漂白剂、无过氧化物漂白剂和冷光进行治疗。处理前后，所有标本进行了分析，高分辨率，微区X射线衍射和扫描电子显微镜。使用光谱仪，测量治疗前后所有样本的牙齿颜色。釉质晶体的物相鉴定为羟基磷灰石和碳酸化羟基磷灰石。处理后，LP组和P组样品的X射线衍射峰明显减弱，晶体尺寸和结晶度明显减小，L* 显著增加，a* 和B* 减小，表面形貌明显改变。然而，NP组和L组的标本未显示任何显著变化。冷光漂白处理导致釉质表面脱矿。含酸性过氧化物的漂白剂是导致脱矿的主要原因，而冷光对这种脱矿没有表现出明显的增加或减少作用。
This in vitro study aims to evaluate the crystal and surface microstructure of dental enamel after cold-light bleaching treatment. Twelve sound human premolars were cross-split into four specimens, namely, mesio-buccal (Group LP), disto-buccal (Group P), mesio-lingual (Group NP) and disto-lingual (Group L) specimens. These four groups were treated using the standard cold-light bleaching procedure, a bleaching agent, a peroxide-free bleaching agent and cold-light, respectively. Before and after treatment, all specimens were analyzed by high-resolution, micro-area X-ray diffraction and scanning electron microscopy. Using a spectrometer, tooth color of all specimens was measured before and after treatment. The phase of the enamel crystals was identified as hydroxyapatite and carbonated hydroxyapatite. After treatment, specimens in Groups LP and P showed significantly weaker X-ray diffraction peaks, significant reduction in crystal size and crystallinity, significant increase in L* but decrease in a* and b*, and obvious alterations in the surface morphology. However, specimens in Groups NP and L did not show any significant changes. The cold-light bleaching treatment leads to demineralization in the enamel surface. The acidic peroxide-containing bleaching agent was the major cause of demineralization, whereas cold-light did not exhibit significant increase or decrease effect on this demineralization.
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影响因子：
4.6
作者：
Lewinstein, I;Fuhrer, N;Cardash, H
通讯作者：
Cardash, H
影响因子：
4.4
作者：
Maia, Elaine;Baratieri, Luiz Narciso;Cardoso Vieira, Luiz Clovis
通讯作者：
Cardoso Vieira, Luiz Clovis
影响因子：
4.4
作者：
da Silva Pobbe, Priscila de Oliveira;Viapiana, Raqueli;Silva, Ricardo Gariba
通讯作者：
Silva, Ricardo Gariba
DOI：
10.1177/154411130301400406
发表时间：
2003-07-01
期刊：
CRITICAL REVIEWS IN ORAL BIOLOGY & MEDICINE
影响因子：
--
作者：
Dahl, JE;Pallesen, U
通讯作者：
Pallesen, U
影响因子：
4.4
作者：
Bistey, Tamas;Nagy, Istvan P.;Hegedus, Csaba
通讯作者：
Hegedus, Csaba