| http://www.w3.org/ns/prov#value | - When placed external to the tooth 20, the shape of the housing 4 should be self-cleansing, for example, smooth and without sharp contours, for example, in the shape of a half moon or oval or round, so as not to trap plaque and food particles thereby minimizing the risk for dental decay and periodontal disease, and so as to minimize abrasion of oral soft tissues, for example the tongue and oral muc
|
