Conceptualizing an interface for an oral risk assessment decision support system

Sammanfattning: The objective of this study was to provide directions for further development of a caries risk assessment tool to be used by dentists in their daily work, with focus on the user experience. The tool itself is a clinical decision support system (CDSS) which is a system that help clinicians diagnose their patients. When designing any system that humans are going to interact with, we consider the users’ mental models which is the way in which they interpret and act in the world around them. We also utilize established usability heuristics, such as Nielsen’s 10 usability heuristics, because no matter how different we are as individuals, we still have some things in common. A formative evaluation was conducted for this study, including user interviews, two prototypes and user testing. The interviews provided insights and knowledge about current tools being used, users’ workflow and opinions which served as a basis for the development of a low fidelity (lo-fi) prototype. Feedback from the user testing of the lo-fi prototype contributed in the development of a high fidelity (hi-fi) prototype which was also user tested and measured a System Usablility Score of 77 out of 100, corresponding to a rating of good. The findings implicated that by adhering to established usability principles and practices we can design a concept of a risk assessment tool to be used within dentistry. Users also showed more concerns about the usefulness of the of the tool rather than the usability, suggesting a dissonance in addressing the purpose of the tool amongst stakeholders.