Teeth Names and Numbers: Diagram, Names, Number, and Conditions

  • Teeth numbers and name have different layers and they are made of different tissues.
  • Adults have, in total, 32 teeth and their names are based on the set, arch, type and side their place
  • Each tooth performs a different function, and with one of them being at risk, our overall oral health is in danger.

teeth numbers

Often, readers come across with articles and blog posts that show and explain about teeth functions, the importance of having healthy cleaning habits and information regarding dental treatments. While it’s good to have all that data within reach, is also useful to know a little bit of dental anatomy. Teeth numbers and name blog post takes a different turn and goes back to the basics: the anatomy of teeth and mouth. 

Teeth number structure is the same for everybody. Teeth divide into two parts: the crown and the root. The crown is the visible white part of the tooth, while the root is what lies underneath, placed in the gum and anchors it into the bone. Teeth have four layers; each of these layers are made of different kinds of tissue and have a different function. Said layers are:

Enamel: Enamel is a combination of phosphorus and calcium and is the visible layer that covers the tooth crown; it protects the tooth from decay.

Dentin: Dentin the second layer of the tooth, it is calcified and has a similar look to the bone. If the enamel wears away, dentin is at greater risk for decay since it is not as hard as enamel.

Cementum: This tissue has a light yellow color and is covered by the gums, ant it covers the tooth root helping to anchor it into the bone.

Pulp. This final layer contains blood vessels, nerves and soft tissues that are vital to delivering nutrients and signals to the teeth. It locates at the center of the tooth.

Teeth numbers and name: how many teeth do humans have?

Every adult has, in total, 32 teeth. The mouth divides into two dental arches, and each of them is divided into right and left quadrants, resulting in four of them. Each quadrant consists of a central and lateral incisor, a canine (also known as cuspid), two premolars and three molars. Their names number are given based on the set, arch, type and side their place, and get associated with the functions they have; which rely on the teeth shape and morphology. It all sounds confusing, we are aware.

how are teeth numbered

 teeth names

Incisors: We have eight incisors in total, and are our front central teeth: four on top and the rest four on the bottom. They are the first teeth to show up in our mouth, erupting around six months of age for the initial set of teeth; and between the ages of six and 8 when the process of getting our permanent pearly whites. Incisors help us to take bites of our food, support the lips and face, help us speak and are the ones in charge of beautifying our smile.

Canines: We have four canines, which are the next kind of teeth to develop after the incisors. The initial ones start to show up around 15 to 20 months of age, with higher canines coming first. When the junior canines start showing up, around between the ages of nine to eleven years old, this process gets reversed, and the lower ones come first. These teeth are the sharpest we have, and they are used to tear and rip food apart and help guide the teeth when we are chewing.

Premolars:  There are eight of them, and we have four on each side of our mouth: two on the upper and the other two on the lower jaw. Premolars lie between canines and molars and tend to appear between the ages of ten and 11 years of age. These teeth are helpful to their adjacent ones. They help the canines to tear and pierce food, and molars to grind and crush food during chewing. Premolars help mainly with aesthetics, support facial muscles and the corners of our mouths.

Molars: We have eight molars in total and are the biggest and strongest teeth in our jaws. Primary molars usually erupt around six years of age, while the permanent ones emerge between 11 and 14 years of age. They are in the rear of the mouth are best known for crushing and grinding food, supporting our cheeks and playing a smaller role in speech.

Third molars: Our dental structure has four of these molars, and they are best known as wisdom tooth. Their primary function is to prepare food for swallowing: they chew food and mix it with saliva.  They usually start showing up around age 18 to 20, but some people never grow them at all. Since they may cause overcrowding in our mouths, they are often surgically removed to prevent displacement of other teeth.

Our teeth are highly significant, and keeping them healthy is even more. Each tooth performs a different function, and with one of them being at risk, our overall oral health is in danger. People shouldn’t take their dental health for granted: engage in regular healthy habits as simple as brushing and flossing on a daily basis. If you smoke; quit. If you eat unhealthy foods: mix up your diet and include nutrient foods. Also, make sure to visit your dentist at least twice a year for regular checkups and dental cleanings.

Some fun facts about teeth:

  • The tooth systems are not only used by dentists. Dental insurance companies make use of it on requests for claims or estimates of treatment costs.
  • Premolars are known for being the most extracted tooth when someone with severe crowding gets braces and needs room in the mouth.
  • Development of our teeth begins way before they are visible. It starts when we are still in our mother’s womb: it starts during the early second trimester of pregnancy.
  • Teeth have parallel-growing tendencies: if a molar is growing in the top left quadrant, the one on the top-right one will show up as well.
  • The set of teeth that replaces our primary one is called succedaneous or permanent
  • Permanent teeth take longer to grow than our primary ones.

1 Comment

  • Alex Posted August 16, 2017 7:52 pm

    Great post love you guys

Add Comment

Your email address will not be published. Required fields are marked *