Typically incisors, canines and premolars will have one root whereas molars will have two or three. Our diagrams and images below will show you what the crown and roots of your Incisor, Canine Cuspid , Premolar Bicuspid and Molar teeth look like in each jaw:.
You have four incisor teeth 2x central and 2x lateral incisors in each jaw. They look like this:. You have six molars in each jaw. The crown of a tooth is the top part that is exposed and visible above the gum gingiva. It is covered with enamel, which protects the underlying dentine. The root of a tooth descends below the gum line, into the upper or lower jawbones, anchoring the tooth in the mouth. Different types of teeth have a different number of roots and root formations.
The neck is the dividing region of tooth at the gum line, where the crown meets the root. The crown of each tooth is covered with enamel, which protects the underlying dentine. Enamel is the hardest substance in the human body, even harder than bone. This is because it is the most mineralised substance in the body, made up of crystalline calcium phosphate Hydroxylapatite. It is as hard as crystal. Enamel is the only tissue that has no living cells. The gingiva is the pink soft tissue that we call our gums.
It protects the jaw alveolar bone and roots of the teeth, and covers the neck of each tooth. Dentine forms the major component of each tooth, and extends almost the entire length of the tooth. It is a living tissue, softer than enamel with a structure similar to bone. In contrast to the brittle nature of enamel, dentine is elastic and compressible.
It is sensitive, and is protected by enamel on the crown portion and cementum on the roots. It is nourished by the pulp. The pulp chamber is the innermost portion of the tooth, lying beneath the dentine and extending from the crown to the tip of the root. The pulp chamber holds the pulp, which is made up of soft tissue. It contains blood vessels to supply blood and nutrients to the tooth to keep it alive, and nerves to enable the tooth to sense temperature. It also contains small lymph vessels carrying white blood cells to the tooth to help fight bacteria.
The cementum is a layer of hard tissue that covers the root of the tooth. It is roughly as hard as bone but considerably softer than enamel. The connective tissues attach to the periodontal ligament, and through this bind the roots of the tooth to the gums and jaw alveolar bone. The root canal also called the pulp canal is the open space inside the root where the pulp extends from the pulp chamber.
Blood vessels and nerves from surrounding outside tissue enter the pulp through the root canal. The periodontal ligament is comprised of bundles of connective tissue fibres. One end of each bundle is attached to the cementum covering the root of the tooth.
The fibres on the other end anchor the tooth root to the jaw alveolar bone and act as shock absorbers, allowing the tooth to withstand the forces of biting and chewing. Accessory canals are smaller channels that branch off from the main root canal through the dentine to the periodontal ligament. They are usually found near the root end of the tooth apex. They supply blood vessels and nerves to the pulp.
The apical foramen is the tiny opening at the tip of each root. Using the name or number of your teeth would impress and earn great respect from your dental professional and the more you know your teeth, the more likely you'll find taking care of your dental health easier and interesting! If you learn these numbers, you will be one step ahead of most people regarding dental communication!
What tooth number is this tooth? Monday, August 8, Do you know the names and numbers of your teeth? Tooth Numbering System The universal numbering system identifies each tooth in a person"s mouth with an individual number. Teeth Names and Functions Because most people do not have 32 teeth due to wisdom tooth extraction, congenitally missing them, or extraction due to non-restorable dental conditions, we will skip over any missing numbers.
It is also important to know the names of the teeth, not just the numbers! Your front four teeth 7, 8, 9, 10 and your front lower four teeth 23, 24, 25, 26 are incisors. Incisors are mainly used for gripping, cutting and shearing food. Incisors are the first thing people see when you flash your smile. Incisors also play a dominant role in speech. Moving further back are the canines or cuspids. Since the roots of our permanent teeth are much longer and thicker, improper care can lead to a tremendous amount of tooth pain.
Since we do not grow any more teeth after our permanent teeth have settled in, chronic dental issues need to be addressed by a dental professional. Skeens and our dental team at Encinitas Family Dentistry would be happy to help you navigate your personal dental chart. We offer a number of important dental services, including:. We want to help you achieve a radiant smile. Call us at , and let us show you how! Our modern facility is equipped with cutting-edge technology and our team is here to make your visit enjoyable and relaxing.
We take a truly individualized approach to dentistry, which is why our practice is so popular. After every treatment, Encinitas dentist Dr. Skeens personally makes follow- up phone calls to patients to ensure that they are feeling well. Your comfort and well-being are of ultimate importance. Gregory W. Facebook Twitter Instagram Linkedin Yelp. How Are Your Teeth Numbered? Understanding Your Dental Chart. Types of Human Teeth Adults have 32 teeth , which can be broken down into four categories: Molars Our molars are responsible for helping us thoroughly chew our food.
A healthy set of teeth will have 12 molars arranged in the back of the mouth. Molars are grown to be extremely strong to grind and crush textured foods for safe swallowing. Wisdom teeth are a type of molar which emerge at the very back of the gums in some dental patients.
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