Teeth numbers on dental chart11/4/2023 ![]() ![]() Primary teeth are noticeably smaller than adult teeth. Normally, our upper and lower incisors are the first teeth that appear (and also the first teeth to fall out). Baby teeth usually start to erupt from the gums in infants aged 6 months. As infants and young children, we develop 20 individual primary teeth, also known as baby teeth, milk teeth, or deciduous teeth. BOTTOM TEETHĪs you may already know, human beings grow two sets of teeth in their lifetime. Then, we work our way back to the lower right quadrant, ending at Tooth #32. We continue counting our bottom teeth from Tooth #17 found in the lower left quadrant. Dentists and dental hygienists will count through to Tooth #16, located in the upper left quadrant. We start with Tooth #1, a molar on the back right side of our mouths known as the upper right quadrant. Our first 16 teeth are located at the top of the mouth. ![]() A healthy human mouth will have symmetrically arranged teeth so that teeth on opposing sides of the mouth will be of the same type. Now that we are familiar with the four types of teeth, we can easily pinpoint the location of each tooth in our mouths. Our canine teeth can have a more animalistic appearance, and some evolutionists believe humans developed canines to be able to consume meat. Canine teeth are distinctly sharper than our other teeth in order to effectively tear food into chewable chunks. Healthy mouths contain 4 canine teeth which flank our incisors (2 on the top and 2 on the bottom). Our incisors are designed for biting and gripping food for chewing. The center two incisors are known as “central”, while the two on either side are known as “lateral”. This tooth type is the first to emerge in infants as early as 6 months old. Our 8 frontmost teeth (4 on the top and 4 on the bottom) are referred to as incisors. Bicuspids usually have a flat surface to help tear food apart and assist the molars with food liquefaction. Each side of the mouth holds 4 premolars, or 8 premolars in total. Wisdom teeth are a type of molar which emerge at the very back of the gums in some dental patients.Īlso known as bicuspids, our premolars are slightly less strong than our molars. Molars are grown to be extremely strong to grind and crush textured foods for safe swallowing. A healthy set of teeth will have 12 molars arranged in the back of the mouth. Our molars are responsible for helping us thoroughly chew our food. Types of Human TeethĪdults have 32 teeth, which can be broken down into four categories: With this guide, you can feel more confident and prepared ahead of your next important dental procedure. The good news is, it’s easy to learn how to read your dental chart. This means that the filling is on the top right first molar, and the mesial, occlusal, and distal surfaces are involved.Trying to interpret your dental x-rays can be very confusing, so it’s no surprise that many people are afraid of the dentist. L – lingual, the inside surface of the tooth (facing tongue)įor example if your dentist says you need a filling 16MOD. A tooth has the following services:ī – buccal, the outside surface of the tooth (facing cheek) In addition to tooth numbers dentists also describe a tooth or filling by its surfaces. Including wisdom teeth there are 32 adult teeth and 20 baby teeth. For example if you were referring to tooth 51, this is the baby first incisor. Quadrant 6 is the baby tooth version of quadrant 2 and so on and so forth. Quadrant 5 is the baby tooth version of quadrant 1. These are used to identify primary or baby teeth. There are 4 additional quadrants used in dentistry. How about your bottom right wisdom tooth? This would be tooth number 48. Tooth 21 is the first incisor on the top left. For example, tooth number 14 would be the upper right bicuspid. All tooth numbers are a combination of the quadrant and then the tooth number. The 6 is your 6 year molar, the 7 your 12 year molar, and the 8 is your wisdom tooth. Within each quadrant of your mouth there are 8 teeth. If you were facing a person then quadrant 1 is YOUR upper left and then go clockwise and you are going 2, 3, 4. Quadrant 1 is the upper right, 2 is the upper left, 3 is the lower left, and 4 is the lower right. The mouth is divided into 4 sections that we call quadrants. I will also discuss briefly the surfaces of teeth. Have you ever wanted to know what the dentist is talking about when he is reading out a bunch of random numbers? This post will discuss the tooth numbering system that dentists use in Canada. ![]()
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