For years, Trident was promoted with the slogan, “Four out of five dentists surveyed "recommend" sugarless gum for their patients who "chew" gum.” This slogan is believed to have been based on the results of a survey of practicing dentists with either D.D.S. or D.M.D. degrees, apparently conducted in the early 1960s, whose patients included frequent users of chewing gums; the percentage of respondents to the survey whose responses indicated they would make such references to their patients is believed to have been approximately 80%, rounded off to the nearest full percentage point, of the total number of respondents. It became strongly associated with the Trident brand. As of the middle of June 2014, however, Kraft Foods's Cadbury Adams group, whose parent company, Mondelēz International, had become owners of the Trident copyright and patents, was not known to have made any public disclosures of any details about the survey, presumably citing the proprietary nature of the survey data and conclusions as its rationale.