Free patient tools
Find adult and primary teeth by Universal number, letter, location, and FDI notation with an interactive dental chart and individual tooth references.
Swipe across the chart to see every tooth, then tap a number for details.
Selected tooth
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Using the estimate
The interactive tooth chart connects the numbering systems commonly shown on dental treatment plans, benefit statements, and referrals. Permanent teeth use Universal numbers 1 through 32, primary teeth use letters A through T, and each chart entry also shows the corresponding two-digit FDI notation.
Step-by-step guide
Step 1
Use the permanent chart for adult teeth numbered 1 through 32. Use the primary chart for baby teeth lettered A through T. A child can have both types present while permanent teeth are erupting.
Step 2
Open a tooth to see whether it is upper or lower and on the patient's right or left. Dental diagrams are often shown as though you are facing the patient, which can make left and right appear reversed on screen.
Step 3
Use the FDI value when a referral or record uses two digits instead of a Universal number. The first FDI digit identifies the quadrant, and the second identifies the tooth's position from the center of that quadrant.
Common questions
