PURPOSE: The purpose of this paper was to compare the ability of fluorescence-aided caries excavation (FACE) to remove infected dentin in primary teeth with that of conventional methods. METHODS: Sixty-six extracted carious primary teeth were divided according to lesion size into 3 groups of 22 teeth. Caries excavation was carried out with a slow-speed handpiece and round burs for all groups. In the first group, caries was excavated conventionally using visual tactile criteria. In the second group, a caries detector dye was used to detect carious dentin. In the FACE group, cavities were excited with violet light (370-420 nm) and observed through a 530 nm highpass filter. Orange-red fluorescing areas were removed. Undecalcified thin slices were prepared, stained with Giemsa, and examined for presence of infected dentin using light microscopy. Four samples were lost during processing. RESULTS: Histology showed infected dentin in significantly less FACE samples (3 of 22) compared to conventional excavation (9 of 20; P=.03), but not significantly less compared to caries detector (5 of 20; P=.35). CONCLUSIONS: Within the limitations of this in vitro study, it can be concluded that fluorescence-aided caries excavation is more effective than conventional excavation in removal of infected primary dentin.
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机译：目的：本文的目的是与传统方法比较荧光辅助龋齿切除（FACE）去除乳牙中感染的牙本质的能力。方法：根据病变大小将66颗拔出的龋齿乳牙分为3组，每组22颗。所有组均使用低速手机和圆钻进行龋齿挖掘。在第一组中，常规使用视觉触觉标准挖掘龋齿。在第二组中，使用龋齿检测剂染料检测龋齿牙本质。在FACE组中，用紫光（370-420 nm）激发空腔，并通过530 nm高通滤光片进行观察。除去橙红色荧光区域。制备未脱钙的薄片，用吉姆萨染色，并使用光学显微镜检查感染的牙本质的存在。在处理过程中丢失了四个样本。结果：组织学显示，与传统挖掘相比（9/20; P = .03），FACE样品中被感染的牙本质明显更少（3/22; P = .03），但与龋齿检测器（20/5; P = .35）相比却没有明显减少。结论：在这项体外研究的局限性内，可以得出结论，在去除感染的原发性牙本质方面，荧光辅助的龋齿开挖比常规的开挖更有效。
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