The concentration of Si-OH in SiO2 gel glasses fabricated by NHG was estimated and lower than that by hydrolytic sol-gel.
结果发现,通过无水溶胶一凝胶工艺制备的凝胶玻璃比有水工艺具有更低的si一OH含量。
Methods: 117 periodontitis patients were divided into two groups according to organoleptic rating ( OR): halitosis group ( HG, 85 cases) and no halitosis group ( NHG, 32 cases).
方法:全身健康牙周炎患者117例,鼻闻法评价口臭程度(OR)后分成两组,口臭组85例,无口臭组32例。
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