Hall A F, Creanor S L, Strang R, Foye R
Department of Oral Sciences, University of Glasgow Dental School, UK.
Caries Res. 1997;31(1):50-4. doi: 10.1159/000262374.
Plaque pH was measured using a glass combination pH microelectrode of plaque deposits lining the trough of an intra-oral appliance which contained single sections of human teeth with artificial enamel lesions. Plaque exposure to a 10% sucrose solution produced significantly lower plaque pH levels than a solution of sorbitol gum extract. The subsequent flow of saliva over the plaque/pH electrode interface resulted in a significant and rapid increase in pH. Repeat experiments, using deionised water instead of saliva, demonstrated no increase in pH at the plaque/electrode interface. This system may provide a convenient method of producing plaque suitable for repeated pH analysis in intimate association with artificial enamel lesions. This may permit further study of the relationship between plaque acidogenicity, salivary buffering capacity and mineral change within the incipient enamel lesion.
使用玻璃组合式pH微电极测量菌斑pH值，该电极用于测量口腔内器具槽内菌斑沉积物的pH值，器具中含有带有人造釉质病变的单颗人牙切片。与山梨醇胶提取物溶液相比，菌斑暴露于10%蔗糖溶液中会使菌斑pH值显著降低。随后唾液在菌斑/pH电极界面流动，导致pH值显著快速升高。使用去离子水代替唾液进行的重复实验表明，菌斑/电极界面的pH值没有升高。该系统可能提供一种方便的方法，用于产生适合与人工釉质病变紧密结合进行重复pH分析的菌斑。这可能有助于进一步研究菌斑产酸性、唾液缓冲能力与早期釉质病变内矿物质变化之间的关系。
