![]() The teeth in each quadrant are then numbered from front to back, starting with the tooth closest to the midline of your face. This means that each quadrant (upper left, upper right, lower left, lower right) is numbered separately. The first number is the quadrant in which the tooth is located, and the second number represents the tooth’s position within that quadrant. This international standard for dental numbers uses a different system with quadrants.Įach tooth is given two numbers to represent its location. In Canada and the rest of the world, teeth are numbered using the FDI World Dental Federation notation. How does the American Teeth Number System Compare to Teeth Numbers in Canada? For primary teeth, which are baby teeth, the system uses letters A through T. ![]() Contact the McCarl Dental Group team to schedule your checkup and cleaning with our team, or find out more about tooth decay prevention and treatment.The teeth numbering system is slightly different for children. Whether it has been six months or six years since your last dental visit, don’t wait one more day.
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