Tenovuo J, Rekola M
Acta Odontol Scand. 1977;35(6):317-30. doi: 10.3109/00016357709064131.
An investigation was made of the effects on some biochemical characteristics of human whole saliva and dental plaque resulting from the daily consumption of three commercial, acid-containing beverages. The beverages tested were a cola beverage ("Coca-Cola"), a carbonated orange drink ("Jaffa") and single strength orange juice. Each of the three test beverages as well as non-fluoridated tap water as a control, were consumed during four two-week periods. The test group consisted of 39 dental students. The mean consumption frequency lay in the range from 5.3 to 5.7 times per day. Orange juice was found to stimulate the salivary secretion rate most. All test drinks decreased the salivary pH immediately after consumption, but the pH did not generally drotase-like activity in oral fluid. Changes were observed in calcium, phosphate and fluoride concentrations in oral fluid samples, but these were due to variations in salivary secretion rate. A significant decrease in redox potentials of whole saliva was, however, observed after consumption of the drinks. The present results indicate that in healthy persons with normal saliva flow rate and buffer capacity the moderate consumption of acidic beverages failed to induce any remarkable caries-promoting changes in oral cavity. However, in persons with low salivary flow rate erosion may be a consequence of regular consumption.
研究了每日饮用三种市售含酸饮料对人全唾液和牙菌斑某些生化特性的影响。所测试的饮料为可乐饮料（“可口可乐”）、碳酸橙汁饮料（“雅法”）和单倍浓度橙汁。在四个为期两周的时间段内，分别饮用三种测试饮料以及作为对照的无氟自来水。测试组由39名牙科学生组成。平均饮用频率为每天5.3至5.7次。发现橙汁对唾液分泌率的刺激最大。所有测试饮料在饮用后立即降低了唾液pH值，但pH值通常不会降低口腔液中类似酶的活性。在口腔液样本中观察到钙、磷和氟浓度的变化，但这些是由于唾液分泌率的变化所致。然而，饮用饮料后观察到全唾液的氧化还原电位显著降低。目前的结果表明，在唾液流速和缓冲能力正常的健康人中，适度饮用酸性饮料不会在口腔中引起任何明显的致龋性变化。然而，在唾液流速低的人中，经常饮用可能会导致牙齿侵蚀。
