... and destruction of the cementum, enamel, and dentin in the infundibu-lum of the permanent P2 in the upper jaw (Fig. 2). Using the scale of Dacre, [10] this corresponds to grade 3infundibular caries; ... produced elsewhere. Within the same period of time, many new commercial equine food compositionshave been introduced on the market, many of them beingall -in- one feeds in the form of pellets, textured ... oralbacteria, including streptococci [17]. The anteriorinfundibulum of the left or right P2 of the upper jaw of control horses was sampled randomly in the same man-ner. In control horses with a closed infundibulum,...