Plaintiff sued the manufacturer and distributor claiming that she had developed a severe stomatitis (inflammation of the mouth, as thrush) from the use of Crest tooth paste. The district court directed a verdict for the defendants.
Plaintiff's expert testified that Crest is not dangerous to normal persons:
Although Crest is one of the most widely used tooth pastes in the United States, the record contains reference to only one other instance of a possible reaction to its use. Stannous fluoride is not a known allergen. There was no evidence that the allergy from which plaintiff suffered is one common to any substantial number of possible users. The plaintiff was not aware of her allergy. It is difficult to conceive of any warning which would have afforded any probability of preventing plaintiff's injury. The judgment entered upon the directed verdict for the defendant is affirmed. See Merrill v. Beaute Vues Corp., 10 Cir. 1956, 235 F.2d 893; Prosser on Torts 2nd ed., p. 503; Annotation 26 A.L.R. 2d 963, 973.