Abstract
The incidence of gingival overgrowth caused by calcium channel blockers was determined. The overgrowth was found in patients receiving amlodipine, diltiazem, manidipine, nicardipine, nifedipine and nisoldipine. The highest rate of gingival overgrowth was obtained by nifedipine (7.6%), followed by diltiazem (4.1%), manidipine (1.8%), amlodipine (1.l%), nisoldipine (1.1%) and nicardipine (0.5%) . The rate of nifedipine-induced gingival overgrowth was significantly higher than those of amlodipine, manidipine, nicardipine and nisoldipine, but not diltiazem.