Randomised in situ trial on the effect of milk and CPP-ACP on dental erosion.
Wiegand ADepartment of Preventive Dentistry, Periodontology and Cariology, University of Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany. Electronic address: annette.wiegand@med.uni-goettingen.de.
Attin TDepartment of Preventive Dentistry, Periodontology and Cariology, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland.
English
OBJECTIVES This randomised in situ study aimed to analyse the effect of milk (with or without 5ppm F) and CPP-ACP pastes (with or without 900ppm F) on dental erosion.
METHODS The study was a seven phase (5 days each) crossover design involving 15 participants wearing intraoral appliances with enamel and dentine specimens. Specimens were extraorally eroded (erosive soft drink, 6×90s/day) and brushed (2×30s/day, 2N) using a non-fluoridated toothpaste (negative control). The test products were milk, milk+5ppm F (twice daily, each 100ml/2min), CPP-ACP paste, CPP-ACP paste+900ppm F (3min/day) or a SnCl2/AmF/NaF mouthrinse (positive control, 30s/day), which were applied immediately after erosion with the appliances in the oral cavity. In an additional group, a fluoridated toothpaste was used without any additional test product. Tissue loss was determined profilometrically after 5 days and statistically analysed by linear mixed models methodologies (p<0.05).
RESULTS Compared with the negative control (non-fluoridated toothpaste only, enamel: 2.2±1.3μm; dentine: 3.8±2.2μm), enamel and dentine loss was significantly reduced by the use of fluoridated toothpaste (enamel: 1.1±1.0μm; dentine: 2.4±1.7μm) and the SnCl2/AmF/NaF mouthrinse (1.5±1.5μm; dentine: 1.8±1.9μm).
CONCLUSIONS Milk and CPP-ACP were not effective in reducing enamel and dentine loss significantly, independently of the presence of fluoride.
CLINICAL SIGNIFICANCE Enamel and dentine erosion were significantly reduced by the use of a fluoridated toothpaste or a SnCl2/AmF/NaF mouthrinse, but not by milk or CPP-ACP under the conditions of the present study.