Effects of soy and bovine milk beverages on enamel mineral content in a randomized, double-blind in situ clinical study

Abstract

Soy beverages are promoted as healthy alternatives to bovine milk even though they can contain added sugar. Objectives: To compare enamel mineral content after consumption of bovine milk or a soy beverage in a double-blind, randomized, cross-over in situ clinical study. Materials and Methods: Human enamel slabs with subsurface lesions were prepared and inserted into intra-oral appliances worn by volunteers who consumed 200 ml of either bovine milk or a soy beverage over a 60 s period once a day for 15 days. Enamel lesion depth and mineral content were measured using transverse microradiography. Saliva samples were collected immediately after consuming the beverages and calcium, inorganic pho..