Layers of the Tooth

Layers of the Tooth

tooth teeth whitening

For many of us the teeth are the pearly white food grinders that sit firm within our mouths with which we can bite and chew and smile.  The teeth look a certain way externally, which is how most of us think about the teeth.  But the teeth look particularly different internally and if we see the teeth in this internal visualization, we may well view differently how we treat the teeth in regards to sugar consumption and dental health care.

View our diagram of the the layers of the tooth then read the list below which explains each part.

tooth teeth layers


Tooth Enamel is the outer layer of tooth which is exposed above the gum line.  It is the hardest element of the human body over all bones and flesh.  The enamel is made up of minerals, mainly hydroxylapatite which is form of calcium phosphate.  Tooth enamel is where stains in the teeth become difficult to remove.  Because the tooth enamel is the hardest part of the human body, it is not an easy task to remove stains safely and efficiently without using professional dental peroxide whitening products.  This is also why teeth whitening kits such as Nu Radiance Forte which contains calcium in the whitening gels, are great for the teeth and replenish the enamel surface of the tooth whilst whitening like no other dental peroxide product can.


Dentin is covered by enamel on the top of the tooth (the crown) which is exposed and covered by cementum on the less exposed tooth which is tucked firmly into the gums.  Dentin is an important part of the tooth due to the way it protects the root canal and how it stabilizes the tooth enamel which sits on top of the dentin.  It is not as hard as the tooth enamel and is more yellow in appearance.


The gums or gingiva is the soft flesh which surrounds the root of the teeth holding the teeth into place and protecting the roots.  The gums also play a part in saliva production.  It is important to keep gums healthy to maintain strong and optimum tooth care.  Learn more about gingivitis here

Periodontal Membrane

The periodontal membrane (or periodontal ligament) is a number of connective tissues which connect the tooth to the bone and help hold the tooth in place.


The cementum is the substance which covers the root of the tooth which sits within the gum.  Cementum contains collagen which enamel does not.

Pulp Chamber

The pulp chamber is the space which sits directly underneath the tooth enamel and dentin and where the root canals reach which contain the blood supply and nerve endings.

Root Canal

The root canal is the inner canal within the root of the tooth which starts in the root chamber sitting underneath the enamel and dentin, both above the gum line, and which ends within the gum itself where the blood supply and nerve endings connect within the gum.

Root End Opening

The root end opening is the area of the root of the tooth which exposes itself to the gum so that the blood supply and nerves can enter into the root canal and reach into the main supplies within the gum itself underneath the teeth.

Nerve and Blood Supply

These are the vessels which come from the gum into the tooth itself via the root canal and into the pulp chamber.



One Responseto “Layers of the Tooth”

  1. wendy bell says:

    Wow what a great article! I always knew about tooth enamel being hard and the outer layer but I never truly understood what else was inside our teeth. Cool and easy to understand write up!