Work / ToothGuard

ToothGuard

Finding a dentist is slow, opaque about cost, and, for a lot of people, frightening. ToothGuard is a dental-care assistant concept I researched, designed, and tested in my master’s program.

Context
Graduate project, University of Washington, 2024
Role
Research, concept, interaction design, testing
Methods
User surveys, competitor analysis, literature review, personas, wireframes, focus groups, interviews
Tools
Figma, surveys, whiteboard sessions
Try it
Click through the Figma prototype

The situation

Surveys turned up the same four problems: nobody knows what a procedure will cost, especially without insurance; it’s hard to judge whether a dentist is any good; booking is a hassle; and there’s almost no plain-language education about what’s going to happen in the chair. Underneath all of it sits anxiety, which keeps people away until something hurts.

Persona: Shirley.
Persona: Shirley.
Persona: Kim.
Persona: Kim.

What I did

I compared existing options, ZocDoc in particular, and read the peer-reviewed work on dentist–patient communication and anxiety reduction. Then I ran whiteboarding sessions to settle the core features: a friendly assistant that answers questions, a price estimator, an education center, and appointment booking that integrates with what already exists rather than rebuilding it.

Whiteboarding features and screens.
Whiteboarding features and screens.
The user journey from worry to booked appointment.
The user journey from worry to booked appointment.

I designed the flows in Figma: a home screen with personalized widgets, the assistant, the price estimator, and the education center.

Booking an appointment through the assistant.
Booking an appointment through the assistant.
Estimating the cost of a procedure.
Estimating the cost of a procedure.
Tracking dental health over time.
Tracking dental health over time.
Learning what a procedure involves.
Learning what a procedure involves.

What came of it

Focus groups found the assistant on the home screen confusing, so I moved it. Interviews found an earlier version overwhelming, so I cut it down. Both rounds pushed me toward the same conclusion: changing how someone feels about the dentist matters more than how the app looks.

If the concept went further, I’d lean into the friendlier “Toothy” name, add short video introductions from providers, let people upload insurance cards, and personalize around dental history. All of that is on the list because users asked for it.