CAJ | 학술논문

目的：观察2种不同浓度的氟制剂对牙釉质表面显微硬度值的影响。方法将牙釉质块随机分为A、B 2组，脱矿30 min后在2组牙釉质表面分别涂布0.9%中性氟化钠溶液和1.0%氟化食醋3 min，并在人工唾液中浸泡30 min，24 h后测定牙釉质表面显微硬度值。结果2组氟制剂涂布后牙釉质表面显微硬度值均有显著提高，涂布1.0%氟化食醋组的牙釉质表面显微硬度值高于0.9%中性氟化钠溶液组，统计学分析人工唾液浸30 min时差异有统计学意义，24 h差异无统计学意义。结论2种不同浓度的氟制剂均可使牙釉质表面显微硬度显著提高，1.0%氟化食醋效果优于0.9%中性氟化钠溶液。
목적：관찰2충불동농도적불제제대아유질표면현미경도치적영향。방법장아유질괴수궤분위A、B 2조，탈광30 min후재2조아유질표면분별도포0.9%중성불화납용액화1.0%불화식작3 min，병재인공타액중침포30 min，24 h후측정아유질표면현미경도치。결과2조불제제도포후아유질표면현미경도치균유현저제고，도포1.0%불화식작조적아유질표면현미경도치고우0.9%중성불화납용액조，통계학분석인공타액침30 min시차이유통계학의의，24 h차이무통계학의의。결론2충불동농도적불제제균가사아유질표면현미경도현저제고，1.0%불화식작효과우우0.9%중성불화납용액。
Objective To investigate the influence of two different concentration fluoride agents on microhardness of enamel surface. Methods Demineralized enamel blocks, randomly divided into two groups, were varnished by 0.9%neutral fluorid sodium and 1.0% fluoride vinegar for 3 min. After being immersed for 30 min and 24 h in artificial salivary, the microhardness data of enamel blocks were tested by M-style microhardness meter. Results After varnished by two fluoride agents, surface microhardness of two-group demineralized enamel blocks was improved. Enamel surface microhardness dealed with fluoride vinegar was higher than that dealed with 0.9%meutral fluoride sodium at 30 min (P<0.05), for 24 h (P>0.05). Conclusion Both different concentration fluoride agents can improve microhardness of enamel surface,the influence of 1.0% fluoride vinegar on microhardness of enamel surface is superior to that of 0.9% neutral fluoride sodium.