discover the tooth diagram
But what is the tooth diagram?
The dental diagram , also called an odontogram, represents an overview of the dentition. It is necessary to simplify the understanding of teeth and to better see the location of treatments proposed by a dentist or hygienist. Due to its universal aspect, the dental diagram is also essential for the exchange of information with colleagues, mutual insurance companies, Social Security, insurance companies, etc.
This article will help you understand dental anatomy a little better. We have written an article that covers the different aspects of tooth anatomy right here: tooth anatomy
What is a tooth?
Teeth perform several important functions in our daily lives. A tooth is an organ composed of a visible part, the crown, and an invisible part, the root. It is made up of three tissues: enamel, dentin, and pulp.
- Enamel : This is the layer surrounding the outer part of the tooth; it is the hardest tissue in the human body. Its function is to protect the tooth from external aggressions.
- Dentin : It is located between the enamel and the pulp. It is a hard tissue crossed by a network of tubules communicating with the nerve of the tooth.
- The pulp : This is the central part of the tooth. This is where the nerves and blood vessels that innervate and supply the tooth are located.
The number of teeth
From 6 months to 6 years, children only have baby teeth, but from the age of 14, they begin to have permanent teeth, except for wisdom teeth, which arrive late. Normally, each individual has 20 baby teeth and 32 permanent teeth, including wisdom teeth, but sometimes these are missing. In an adult, each jaw has 4 incisors with a straight edge for grabbing or cutting food, 2 pointed canines for shredding, 4 premolars and 6 molars with multiple points for crushing food, and 2 wisdom teeth. Incisors and canines have a single root, while premolars and molars have multiple roots. For years, each tooth has been given an international number, and this numbering gives a tooth diagram .
The tooth diagram
The tooth diagram represents all the teeth, temporary teeth and permanent teeth in a person's mouth. We can see that it is divided into 4 quadrants (2 for the upper teeth and 2 for the lower teeth). Each quadrant is numbered from 1 to 8, starting from the middle to the end. On each quadrant we find a central incisor, a lateral incisor, a canine, a first molar, a second molar, a first molar (6-year tooth), a second molar (12-year tooth) and a third molar (wisdom tooth). The numbering is 2 digits, the first is the quadrant, and the second is the tooth itself.
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If you are interested in this topic, here are the related articles.
There are 20 baby teeth : 8 incisors, 4 canines and 8 molars.
We have written a very comprehensive article on the number of teeth and tooth number which you can find here: tooth number
There are several tooth numbering systems, the FDI system, the FDI system and the Palmer system. We will take stock of these different systems in a dedicated article that you can find right here: dental numbering system
To fully understand the anatomy of teeth and the mouth there are also two major concepts to understand, that of the dental dial which we have explained here: dental dial
And the concept of dental diagram which is a representation of the entire dentition that we have explained here: dental diagram
If you want to know more about wisdom teeth, we have an article that specifically addresses this topic: wisdom teeth