Comparison of the effects of whole and juiced fruits and vegetables on enamel demineralisation in situ
Issa et al., 2011 Caries Res 45:448-452
Objective: Compare the effect on enamel demineralisation in situ of fruits and vegetables either consumed whole (intrinsic sugars) or in juiced form (extrinsic sugars)
Design: Cross-over. All subjects consumed one of the test foods/drinks or controls 7 times a day (35 g) for 10 days. Test foods and equivalent juice included apples, oranges, grapes, carrots, raisins (no juice equivalent) and tomatoes, with 10% sugar and sorbitol as +ve and –ve controls respectively. Fluoride-free toothpaste employed during the study when appliances were removed.
Setting: UK
Participants: 10 healthy adult dentate volunteers, with normal salivary function. Mean age 37 y, mean DMFS 28.8.
Main outcome measures: Demineralisation of removable mandibular appliances carrying pre-demineralised human enamel slabs.
Results: All test foods and drinks, apart from sorbitol, showed increased demineralisation with no difference between solid and juice forms.
Conclusions: Consumption of sugars in intrinsic form may not be safer than consumption in extrinsic form.
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