Emami Z, al-Khateeb S, de Josselin de Jong E, Sundström F, Trollsås K, Angmar-Månsson B
Department of Cariology, School of Dentistry, Karolinska Institutet, Huddinge, Sweden.
Acta Odontol Scand. 1996 Feb;54(1):8-13. doi: 10.3109/00016359609003502.
The laser fluorescence method (LAF) was validated with longitudinal microradiography (LMR) for assessment of mineral loss in incipient caries lesions in human enamel. Fluorescence radiance scans and LMR recordings were made of 36 enamel slabs with incipient lesions. Original sound values for fluorescence radiance and enamel amount (kg.m-2) at the lesion site were reconstructed by a computer algorithm. Changes in fluorescence radiance and amount of enamel in each measuring point were calculated. The reconstruction method was tested on 20 sound enamel surfaces. The differences between measured and reconstructed values were -0.13 +/- 0.17% with LAF and 0.002 +/- 0.005 kg.m-2 with LMR. The repeatability of the caries quantification was tested by measuring one lesion 20 times. The fluorescence loss in this lesion was 18.2 +/- 1.0%. The enamel loss was 0.09 +/- 0.02 kg.m-2. The correlation between measurements with the two methods was r = 0.73. The non-destructive laser fluorescence method was concluded to be a sensitive and valid method for quantification of mineral loss in enamel caries lesions.
采用纵向显微放射照相术（LMR）对激光荧光法（LAF）进行验证，以评估人类牙釉质早期龋损中的矿物质流失情况。对36个带有早期龋损的牙釉质样本进行了荧光辐射扫描和LMR记录。通过计算机算法重建了龋损部位荧光辐射和牙釉质含量（kg.m-2）的原始健康值。计算了每个测量点荧光辐射和牙釉质含量的变化。在20个健康牙釉质表面测试了重建方法。LAF测量值与重建值之间的差异为-0.13±0.17%，LMR测量值与重建值之间的差异为0.002±0.005 kg.m-2。通过对一个龋损进行20次测量来测试龋损定量的重复性。该龋损的荧光损失为18.2±1.0%。牙釉质损失为0.09±0.02 kg.m-2。两种方法测量结果的相关性为r = 0.73。结论是，非破坏性激光荧光法是一种用于定量牙釉质龋损中矿物质流失的灵敏且有效的方法。
