Rachmawati Dessy, Cahyasari Devanti Ayu, Febiantama Ardin Tito, Hidayati Lusi, Kleverlaan Cornelis Johannes
Department of Dental Biomedical Science, Faculty of Dentistry, University of Jember, Jl. Kalimantan 37, Jember 68121, East Java, Indonesia.
Department of Dental Materials Science, Faculty of Dentistry, University of Jember, Jl. Kalimantan 37, Jember 68121, East Java, Indonesia.
Materials (Basel). 2021 Nov 21;14(22):7069. doi: 10.3390/ma14227069.
Alloys in oral cavity always interact with dynamic oral environment, such as pH, temperature, salivary conditions, and dietary habits. Coffee can further decrease pH in the oral cavity. Thus, coffee may increase the release of metal ions that may lead to various health diseases. This study aimed to quantitively investigate the effect of brewed Robusta coffee on the nickel ion release and their morphological structures; Methods: 20 alloy specimens were divided into 4 groups and placed in solutions for 48 and 168 h: (1) distilled water, (2) artificial saliva, (3) Robusta coffee, and (4) mixture of artificial saliva and Robusta coffee. AAS, XRF, and SEM were used for examinations; Results: The release of Ni was found in all groups and robust release were found in the coffee only and mixture of coffee + artificial saliva solution after 168 h. Likewise, SEM showed that internal oxidation was high after 168 h of immersion; Conclusions: The concentration of nickel increased in saliva of low pH due to brewed coffee. Though the release of these ions is still within the tolerable amount in human body, it should be realized that it usually lasts for months or years. Dentists should be cautious when using instructions for patients with a history of allergies especially for dietary with low acidity.
口腔中的合金总是与动态的口腔环境相互作用，如pH值、温度、唾液状况和饮食习惯。咖啡会进一步降低口腔中的pH值。因此，咖啡可能会增加金属离子的释放，这可能导致各种健康疾病。本研究旨在定量研究冲泡的罗布斯塔咖啡对镍离子释放及其形态结构的影响；方法：将20个合金标本分为4组，分别置于溶液中48小时和168小时：（1）蒸馏水，（2）人工唾液，（3）罗布斯塔咖啡，（4）人工唾液与罗布斯塔咖啡的混合物。采用原子吸收光谱法（AAS）、X射线荧光光谱法（XRF）和扫描电子显微镜（SEM）进行检测；结果：所有组均发现镍的释放，168小时后，仅咖啡组以及咖啡+人工唾液混合溶液组发现大量镍释放。同样，扫描电子显微镜显示浸泡168小时后内部氧化程度较高；结论：冲泡咖啡会使低pH值唾液中的镍浓度增加。尽管这些离子的释放量仍在人体可耐受范围内，但应意识到这种情况通常会持续数月或数年。对于有过敏史的患者，尤其是饮食酸度较低的患者，牙医在使用相关指示时应谨慎。
