洗必泰不会提高但能保持对侵蚀牙本质的粘结强度。

Chlorhexidine does not improve but preserves bond strength to eroded dentin.

作者信息

Francisconi-dos-Rios Luciana Fávaro, Calabria Marcela Pagani, Casas-Apayco Leslie Caroll, Honório Heitor Marques, Carrilho Marcela Rocha De Oliveira, Pereira José Carlos, Wang Linda

出版信息

Am J Dent. 2015 Feb;28(1):28-32.

PMID:25864239

Abstract

PURPOSE

To evaluate the effect of aqueous solutions of chlorhexidine digluconate (CHX) in different concentrations on bond strength to eroded dentin up to 6 months, using normal dentin as a control.

METHODS

Exposed flat dentin of extracted third molars was only ground with 600-grit SiC paper/1 minute (normal dentin - N), or subsequently eroded by a regular-cola soft-drink (eroded dentin - E). N and E were acid-etched, washed, dried and rehydrated with 1.5 μL, respectively, of distillated water (control - NC / EC); of 0.004% CHX (N0.004% / E0.004%); or of 2% CHX (N2% / E2%). Adper Single Bond 2 was applied in all specimens and resin composite buildups were constructed with Filtek Z350. Specimens were sectioned in beams, which were tested (μTBS) immediately or after 6 months of aging.

RESULTS

Microtensile bond strength to eroded dentin was always significantly lower than that to normal dentin. Application of tested CHX solutions did not exert a significant effect immediately; however, after aging, the 2% CHX prevented abrupt bond strength loss both to eroded and normal dentin.

摘要

目的

以正常牙本质为对照，评估不同浓度葡萄糖酸氯己定（CHX）水溶液对侵蚀牙本质粘结强度长达6个月的影响。

方法

拔除的第三磨牙暴露的平坦牙本质仅用600目碳化硅砂纸打磨1分钟（正常牙本质 - N），或随后用常规可乐软饮料侵蚀（侵蚀牙本质 - E）。N组和E组分别用1.5μL蒸馏水（对照 - NC / EC）、0.004% CHX（N0.004% / E0.004%）或2% CHX进行酸蚀、冲洗、干燥和再水化。所有标本均应用单键2粘结剂Adper Single Bond 2，并使用Filtek Z350构建树脂复合材料修复体。将标本切成小梁，立即或老化6个月后进行测试（微拉伸粘结强度，μTBS）。