What Is The Tooth Numbering System?

If you’ve ever visited the dentist, you’ve probably noticed that your teeth are numbered to help with dental procedures and treatments like teeth whitening or teeth grinding. So what does this number system mean? What does each number on your tooth correspond to? And how can you use it to help you know where your dentist should work on your teeth? Find out here in our guide on the tooth numbering system.


What Is A Dental Tooth Number Chart?


A dental tooth number chart or tooth numbering system is a way to reference and identify individual teeth in your mouth. For example, in North America, we often refer to our teeth by their numbers, with lowercase letters. While we refer to them as teeth, they’re actually called dental elements because there are 32 of them on each arch of our mouths. Even though there are 32 total teeth on each arch of our mouths, only 16 are visible once your mouth is closed. These 32 teeth break down into four quadrants (upper right and left; lower right and left), with each quadrant having eight teeth.


How Are Teeth Numbered?


Teeth are labeled starting from the incisors and working in a clockwise direction. In most cases, they will be numbered as follows: Incisors: 1, 2, 3 and 4; Canines: 5, 6, 7 and 8; Premolars: 9, 10 and 11; Molars: 12 through 19. However, some people do not have canines (such as those with severe congenital defects), while others might have one or more additional teeth on top of these numbers. To figure out how to number such teeth correctly is to subtract from 20 so that you end up with an appropriate total for your specific mouth. For example, if you were missing canines but had extra molars instead you would subtract two teeth from 20 to get 18.

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What Are Wisdom Teeth Numbers?


Wisdom teeth—the third set of molars (or wisdom teeth) that appear between ages 17 and 25—are removed in about 15 percent of people, so there’s a chance you won’t have them. They usually come in at about age 21, but sometimes don’t emerge until people are well into their 30s. Your dentist will count wisdom teeth from your midline (your center) back to where they emerge on either side. If you have one tooth on either side, it will be called a left lateral or right lateral depending on which side it appears on.


What Are The Different Types Of Tooth Numbering System?


How Are human teeth names  In dentistry, there are many ways to number teeth. First of all, it is important to distinguish between deciduous teeth and permanent teeth as they are numbered differently. Then there are two different ways to numerate deciduous teeth: mesiodistally and buccolingually… Last but not least, there are two different ways to numerate permanent teeth: with or without roots (the mesio-occlusal cusp)…The figure above shows the numbering of deciduous and permanent teeth based on their side (mesiodistal) number..


What Are Teeth Numbers And Names?


Teeth are numbered based on their relationship to other teeth. In front of a tooth is its predecessor and behind it is its successor. Upward in your mouth is a higher number, while downward is a lower number. Milk teeth or baby teeth are often referred to as a person’s primary or permanent set of teeth, but there is no actual standard for how many sets of teeth one has throughout their life; any tooth may be removed and replaced with another over time. There are 28 total named teeth—the same number that existed in our ancestors’ mouths 10,000 years ago! But where does that number come from? Why not 26?

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Universal Numbering System


Today, dentists use a universal numbering system to describe teeth. Each tooth has three numbers in its description: its location in either quadrant or arch, an upper or lower number and then a left or right number. So, for example: The upper right third molar would be described as 4-4-3. Upper and lower numbers refer to one’s jaw (i.e., whether it is on top of your gums or below them). For example, a person with four teeth located in their lower jaw would have four lowers. Left and right numbers reference where in your mouth each tooth is located (in relation to your tongue). Teeth are numbered starting from either your center point—your chin—or one’s reflection point—your lips.


Palmer Notation Numbering System


In dentistry, there are two main ways to number teeth. The first is known as Palmer notation and is used for even-numbered teeth (the incisors and canines). In Palmer notation, tooth #2 would be known as the lateral incisor. This refers to a tooth on either side of your nose – where your glasses go. It’s important to note that Palmer notation does not work for odd-numbered teeth (the wisdom teeth) and it doesn’t distinguish between upper and lower jaw so 1L represents both an upper or lower lateral incisor. For both of these reasons, other numbering systems are often preferred.

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