Abstract
This paper compares the erosive potential of standard Tropicana smooth orange juice with a new low acid orangejuice. Three parameters are compared in the laboratory; pH, neutralizable acidity and the ability to erode enamel. The pH of the standard orange juice is 3.88 compared with the low acid orangejuice which has a pH of 4.18. The neutralizable acidity of the low acid juice is lower (16.96 ml of 0.1M NaOH) than the standard juice (28.46 ml of 0.1M NaOH). The low acid orangejuice produces less enamel erosion (2.49 μm) than the standard juice (5.23 μm). Ideally, these laboratory findings need to be confirmed in a randomized controlled clinical trial before this product could be recommended unreservedly for patients that are clinically susceptible to erosion.