Dental caries is one of the most common oral diseases in the world and often goes untreated due to the high cost of treatment. According to the World Health Organization (WHO), 60 to 90 percent of school-age children worldwide suffer from untreated dental lesions. Ethnic minorities, the poor, the elderly, and those who are mentally and/or physically disabled are other disparities that suffer from untreated dental caries (Alcorn & Rogo; 2012). Seeking a way to solve the dental cavity epidemic by providing affordable treatment, silver diamine fluoride (SDF), also known as “silver fluoride bullet,” was created. Claiming to be affordable and effective, SDF could be the answer to the low-cost treatment the world has been looking for. The purpose of this article is to research the effectiveness of silver diamine fluoride compared to sodium fluoride paint. Our PICO question is: In a patient with dentinal caries, will the use of silver diamine fluoride versus sodium fluoride varnish be more effective in stopping the caries? Fluoride has been established for many years as an effective material in fighting tooth decay. Silver has been used in healthcare as an antibacterial agent in many medical applications such as silver sutures and catheters. Silver diamine fluoride was created to combine the effectiveness of both. According to a critical review by Rosenblatt et al (2009), “…silver interacts with the sulfhydryl groups of proteins and with DNA, altering hydrogen bonds and inhibiting respiratory processes, DNA unwinding, cell wall synthesis cell and cell division (Pg #?) .” It is through these means that pathogens are destroyed and biofilm formation is hindered. The study by Lou et al (201... center of paper... teeth was 79% and 65% in first permanent molars. The caries arrest rate on both permanent and deciduous teeth was 77% In comparison, a study conducted on children in Greenland, the rate of stopping dentinal caries applied with NaF varnish alone was only 33% (Ekstrand, et al; 2010). silver is more effective in stopping dentin. tooth decay than sodium fluoride varnish. In examining these research studies, SDF represents a cost-effective, erasable alternative to restorative treatment that may be particularly useful in unmanned areas. dental equipment or facilities. Further studies are needed to determine the recommended application interval and long-term results. In conclusion, the research suggests that SDF would be an excellent treatment solution for people around the world, especially for. those belonging to groups with inequality.