And as gum disease like gingivitis or periodontis are among the most common complaints that dentists have to deal with, they have a code to describe that, too. This is because most people forget that dentists don’t just take care of the overall health of your teeth, they also look after the health of your gums. But then you’ll hear other numbers which aren’t on the chart being bandied about and end up feeling just as confused as before. Now that you understand the teeth numbering chart, you might start to feel a little bit more relaxed in the dentist’s chair. The bottom half of your mouth begins at 17, the bottom left third molar and the numbering continues its way around to number 32, the bottom right third molar. The same as primary teeth, the numbering starts with the third upper right molar which is designated 1 and continues in sequential order to the upper left third molar, which is 16. This follows the same pattern as with primary teeth except this time, the tooth number chart uses actual numbers, from 1 to 32. Permanent teeth numbering under the Universal Numbering System The lettering continues sequentially in the bottom half of the mouth, starting with K, the lower second left molar, right under J, continuing the clockwise sequence of the quadrants, and goes all the way to T, the second molar in the bottom right hand quadrant. all the way round to the second molar in the upper left quadrant which becomes J. ![]() The right second molar (the big teeth at the back of your mouth) in the upper right quadrant is assigned the letter A, the next B, etc. Numbering (lettering) begins in the upper part of the mouth. This is done so that technicians and others will immediately know whether the teeth in question are primary or permanent merely from looking at the records. This is a bit misleading as primary teeth aren’t given numbers under the Universal System, they are assigned letters. Primary teeth numbering under the Universal Numbering System It does have one major disadvantage though, which is why it is not accepted universally, despite the name (a bit like the World Series in baseball, isn’t it) and that is that it does not allow for the numbering of supernumerary teeth (these are extra teeth that can sometimes grow in a person’s mouth). The advantage of this system, and the main reason why it was accepted by the ADA, is that it numbers teeth sequentially, and this makes it quick and easy to locate the desired tooth in the mouth. The system was approved and accepted by the ADA (American Dental Association) and, as we said, is the most commonly used by dentists in the US. In this teeth numbering system, teeth numbers for primary and permanent teeth are assigned differently. The Universal teeth number chart was first proposed by a German dentist, Julius Parreidt, way back in 1882. Understanding this chart will help you find out a lot about the state of your overall oral hygiene. Here in the good old US of A, we use the (not very aptly maned) Universal System. ![]() This varies from country to country - the UK uses the Palmer Notation Method while in Canada they use something called the ISO/FDI system. In order to keep track of the condition of each tooth, dentists use a dental tooth numbering chart. The upper part of your mouth is made up of the first two quadrants, while the third and fourth are in the lower half. They are actually referring to parts of your mouth.įor ease of reference, dentists divide the mouth into four parts or quadrants. When you hear your dentist muttering to their staff about quadrants, they’re not doing complicated mathematical equations to calculate how much to charge you. In this article, we’ll help you crack the code that is dentist speak. They use teeth numbers and other terms and references that are perfectly understandable to them but might as well be Greek to the poor patient sitting in the chair. Like most professions, dentistry has its own lingo that outsiders can have great difficulty in trying to follow. Well, it isn’t really a secret code, and they are not doing it to hide vital information from you. Sitting in a dentist’s chair is never a very relaxing experience, and a lot of people find it isn’t helped by the dentist and their staff talking about your teeth in a secret code.
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