Croll法釉质微打磨和家庭漂白联合应用对牙釉质表面形态影响的离体牙研究

In vitro study of Croll enamel microabrasion and tooth bleaching on enamel surface morphology

目的探讨牙齿Croll法釉质微打磨和家庭漂白联合使用对釉质表面形态的影响。方法12颗离体牙随机分为3组,A组为对照组,B组采用Croll法釉质微打磨法,C组采用Croll法釉质微打磨法后家庭漂白4周,通过对离体牙扫描电镜的观察,研究上述釉质微打磨和家庭漂白对釉质表面形态的影响。结果Croll法釉质微打磨可以使釉质表面形成致密的矿化结构,经过4周的家庭漂白,釉质表面有脱矿表现。结论Croll法釉质微打磨能形成致密的矿化表层,但漂白后釉质仍然脱矿。

Objective To investigate the effects of Croll enamel microabrasion and tooth bleaching on enamel surface morphology. Methods Twelve extracted teeth were divided randomly into three groups.Teeth in A group were untreated, teeth in B group were micro,abraded with PREMA, while teeth in C group were treated with tooth bleaching for 4 weeks after enamel was micro,abraded with PREMA.We observed the changes of enamel surface morphologically on teeth treated with above methods by SEM. Results Croll enamel microabrasion created a densely compacted, mineralized structure. The enamel had a surface change and porosity after croll enamel micro,abrasion and tooth bleaching. Conclusion Croll enamel microabrasion could make a compact mineralized structure and it benefited enamel surface, but the enamel was demineralized after tooth bleaching.