Peri-implant mucositis is abnormal inflammation occurring around dental implants, increasing the risk of loss of bone support. The purpose of this study is to evaluate the impact of brushing the bacterial biofilm at the implant-mucosa interface with one of two, commercially-available dental gels over a 30-day period on amounts of biofilm and indices of mucosal inflammation. Adult subjects (> 19 years old) will be invited to consent if they have at least one dental implant displaying mucositis defined as Gingivitis Index of 2 or greater, no dental treatment in the previous 30 days, capable of normal toothbrushing, and no Sjogrens disease, immunodeficiency, pregnancy, poorly-controlled diabetes, or regular systemic antibiotics, anti-inflammatory drugs or immune suppressants. Ten patients in each tooth gel group will be instructed to apply a pea size amount of dentifrice brushing the implant and mucosa 2 times daily for 30 days. Baseline and 30-day examinations will be conducted to record Gingivitis Index, Plaque Index, probing depths, clinical photo, crevicular fluid, and adverse events.