<p>Although there are approximately 3.5 billion people impacted by oral health diseases, most adverse oral health conditions can be prevented by accurate toothbrushing. One intervention previously shown to be effective at increasing toothbrushing frequency and effectiveness is contingency management. However, there is a dearth of research using contingency management to increase toothbrushing accuracy. Thus, the current study aimed to improve toothbrushing accuracy in three college students through use of a contingency management with a deposit contract intervention. Specifically, participants deposited money and earned back portions of their deposit as they met predetermined accuracy goals. A nonconcurrent multiple baseline design across participants was used to assess intervention effectiveness. Results showed increases in accuracy during contingency management with a deposit contract compared to baseline for all three participants. These results add to the growing body of evidence suggesting contingency management with deposit contract interventions may be effective at improving oral hygiene behaviors.</p>