By using this common method, we are able to easily discuss treatment with specialists and insurance companies. The Universal numbering system is used by most dentists in the US. We use the Universal method because it is supported by the American Dental Association (ADA) and taught in every dental school in the country. It uses numbers 11 to 18 to count the top right side of the smile, 21 to 28 to count the top left, 31 to 38 to count the bottom left, and 41 to 48 to count the booth right teeth. FDI (or International) – this method, adopted by the Federation Dentaire Internationale is used outside of the United States.Palmer method – this method counts teeth in each quadrant from 1 to 8 starting at the front teeth known as the incisors as number 1 and the very back molar is 8.If any of teeth are removed or missing, the number that corresponds to that tooth is skipped. This numbering system allows for all 32 teeth, including wisdom teeth, to be present. Then, the bottom teeth are numbered from left to right 17 to 32. Universal method – starting at the rear right upper molar and preceding to the rear left upper molar, teeth are numbered 1 to 16.There are three common tooth numbering methods, and each has their own unique advantages. The Universal, Palmer, & FDI Tooth Numbering Systems At McCarl Dental Group, we use the Universal numbering system which is the American Dental Association supported method. This short hand is used by dentists to refer to each of the teeth quickly. Visiting the dentist can often be stressful or disorienting for patients, but possibly the most disorienting part of every visit is all the numbers dentists, hygienists, and assistants say to each other throughout dental checkups.
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