THE slogan for Trident in the 1970s — “four out of five dentists surveyed recommend sugarless gums for their patients who chew gum” — typified how sugarless gum was marketed for decades after Trident, now a division of Cadbury North America, first introduced a saccharine-sweetened gum in 1964. Those much-cited dentists were saying not that sugar-free was good, of course, as much as preferable to regular gum.
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