SummaryThe relationship of plaque accumulation to two different designs of a proximal minor connector, was studied in twenty‐seven removable partial denture wearers. On thirty proximal surfaces adjacent to a closed space design, and on thirty‐two surfaces adjacent to an open space design, plaque formation was recorded using a plaque scoring system. Mean plaque scores were calculated separately for the two types of design, and no difference was found between the two sets of sco