Teeth are one of the important and sensitive parts of our body that play a big role in chewing food, talking, laughing and the beauty of our face. Teeth are not only important for digesting food, but also play a significant role in communication and aesthetics.
A healthy and attractive smile can boost self-confidence and improve social interactions. In addition, the teeth provide structural support and prevent sagging of the face and sunken cheeks.
Dental anatomy is a science that studies the structure, shape, size, composition, reproduction and function of teeth and related tissues.
This science examines the evolution, difference, similarity and role of human and animal teeth.
Dental anatomy is an old science that has its roots in ancient times. Some of the earliest evidence of dental anatomy has been found in Egyptian, Babylonian, Indian, and Chinese cultures.
These cultures cared about the shape, number, role and treatment of their teeth and their animals.
Entering the historical period, dental anatomy was recognized as an independent science and some famous doctors and philosophers such as Hippocrates, Aristotle, Galen and Ibn Sina investigated and explained it.
These people helped to identify the structure, number, role and diseases of the teeth and suggested treatment methods such as filling, extraction, cleaning and oral massage.
With the beginning of the modern era, dental anatomy changed with scientific and technological advances and new and better methods were invented to study, teach and treat teeth. Some of these methods include: the use of a microscope, radiography, 3D imaging, DNA analysis, stem cells, dental prostheses, dental implants, and lasers.
These methods have helped to identify the differences, similarities and evolution of human and animal teeth and have led to the improvement of oral health and beauty.
There are four types of teeth: incisors, canines, premolars, and molars. Each type of tooth is for specific functions and has distinctive characteristics.
This group of teeth in dental anatomy is smooth and rectangular and is used for biting and crushing food. The incisors are medium and wide and there are four in each jaw. In total, humans have eight incisors: four in the upper jaw and four in the lower jaw.
Canines are sharp and triangular and are used to cut and tear food. Canines are small and narrow and there are two in each jaw. In total, humans have four canines: two in the upper jaw and two in the lower jaw.
The posterior teeth are large and thick and there are six in each jaw. In total, humans have twelve posterior teeth: six in the upper jaw and six in the lower jaw:
They have a smooth surface as well as indentations that make them ideal for grinding and chopping food.
Wisdom teeth are the fourth and last group of human teeth located at the end of the jaw. These teeth in the anatomy of the teeth, like the back teeth, are rough and pitted and are used to crush food.
Wisdom teeth are big and thick and there are two in each jaw. In total, humans have four wisdom teeth: two in the upper jaw and two in the lower jaw.
Of course, it should be noted that wisdom teeth may not grow in some people or may come out irregularly or incompletely.
This issue may occur in dental anatomy due to lack of space, genetic defects, damage to dental floss, or contact with neighboring teeth.
Milk and permanent teeth are different in terms of the number of teeth, growth time, shape and size. Baby teeth are smaller and fewer in number than permanent teeth and usually erupt between six months and three years of age.
On the other hand, permanent teeth begin to grow at around six years of age and continue to grow until early adulthood.
Different types of teeth help digestion by breaking down food into small particles. The incisors and canines are responsible for biting and cutting food, while the premolars and molars grind and crush food, making it easier for the body to absorb nutrients.
Without proper chewing, the body may have trouble breaking down food, leading to digestive problems.
Proper chewing is essential to maintain digestion and oral health. Chewing food thoroughly helps break down food into smaller particles, making it easier to digest and absorb nutrients.
In addition, proper chewing can help prevent dental problems such as cavities and gum disease.
The teeth work together to break down food into small particles, making it easier for the body to absorb nutrients. Molars and canines are responsible for biting and cutting food, while premolars and molars grind and crush food.
Digestion begins in the mouth, where the teeth break down food into small particles. Then the food goes through the esophagus to the stomach, where it is further broken down by stomach acid and enzymes.
Dental anatomy in dentistry is a branch of dental science that studies the structure and components of teeth in detail.
Each tooth consists of three main parts: crown, neck, and root. Each part is made of several layers and textures, each of which has its characteristics and functions.
Crown: the upper part of the gum in the anatomy of the tooth
Part of the dental anatomy includes the crown, which is the visible part of the tooth and is located above the gum. The crown consists of three layers: enamel, dentin, and pulp.
Tooth enamel is the outer surface of the tooth crown. Enamel is a hard mineral tissue composed of hydroxyapatite crystals.
Enamel is white, transparent and the hardest tissue in the body. Enamel has a protective role and protects dentin and pulp against pressure, heat, cold, and bacteria. Enamel also helps transmit light to the tooth and enhances its beauty.
Ivory is the second and lower layer of enamel. Dentin is a relatively hard mineral tissue composed of dentin tubules.
The dentin is bright yellow, semi-transparent, and sensitive to pain. Dentin has a supporting role and supports enamel and pulp. Dentin also helps transmit light to the enamel and determines the color of the tooth.
The pulp is the third and innermost layer of the tooth crown. Pulp is a soft and sensitive tissue that consists of connective tissue, blood vessels, nerves, and pulp cells.
This layer is bright red, invisible, and very sensitive to pain and has the role of nutrition and protection and nourishes and protects the dentin. Pulp also has a production role and produces new dentin in case of dentin damage.
the part connecting the crown and the root in the anatomy of the tooth
The neck of the tooth is one of the important parts of the anatomy of the tooth, which is located under the gums. The neck consists of two layers: pulp and gum.
The pulp is the layer inside the neck of the tooth that originates from the development of the crown pulp. The neck pulp has the same characteristics and functions as the crown pulp.
The gum is the outer layer of the neck of the tooth, which consists of pink fleshy tissue. The gums are pink, visible, and sensitive to pressure. The gum has the role of covering and protection and covers and protects the neck and periodontal ligament.
the lower part of the tooth in the jaw and dental anatomy
The root of the tooth is another main part of the anatomy of the tooth, which is located in the lower part of the tooth and in the jawbone, which connects the tooth to it.
The root consists of three layers: cementum, periodontal ligament, and jaw bone.
Cementum is the outermost layer of the tooth root. Cementum is a relatively soft mineral tissue composed of hydroxyapatite crystals. Cementum is bright white, invisible, similar to bone. Cementum plays a connecting role and connects the root to the periodontal ligament and jaw bone.
The periodontal ligament is the second and lower layer of the cementum. The periodontal ligament is a connective tissue and collagen fiber that consists of connective tissue, collagen fibers, nerves, and blood vessels. The periodontal ligament is dark pink, invisible, and sensitive to pressure.
The periodontal ligament has the role of connection, nutrition, and protection, and connects the root to the jaw bone, nourishes and protects the cementum.
The periodontal ligament also has a controlling role and controls chewing force.
The jawbone has a supporting and shaping role supports the teeth and gums and helps shape the face.
Among the permanent teeth, there are 16 in the upper jaw and 16 in the lower jaw. Human permanent teeth are numbered in the order of the Bostrophydon sequence. Upper jaw teeth include:
The lower jaw also has the following teeth:
To prevent cavities and cavities, you should pay attention to oral hygiene every day and use brushing, flossing, and eating healthy foods. To treat tooth cavities and holes, you must visit a dentist and use filling, restoration, crowning, or tooth extraction methods.
To prevent pulpitis, damage to the teeth should be avoided and teeth protection, fluoride, and healthy foods should be used. To treat pulpitis, you should see a dentist and use the methods of root canal, pulpectomy, pulpotomy, or tooth extraction.
To prevent periodontal disease, you should practice daily oral hygiene and use brushing, flossing, and eating healthy foods. You should visit a dentist to treat gum and tooth problems and use cleaning methods, gum surgery, prosthetics, or implants.
To prevent malocclusion, one should avoid bad habits such as finger sucking, keeping the tongue in front of the teeth, automatic chewing, and using treatment methods such as beautification, jaw surgery, or tooth restoration.
To prevent teeth grinding or bruxism, you must find and eliminate the cause and avoid things that aggravate it such as stress, anxiety, anger, pain, or some medications and visit the dentist regularly and use treatment methods such as dental protection (night guard), proper nutrition, breathing exercises.
Several factors including diet, hygiene, genetics, and environmental factors can affect the health of teeth.
Dental care: The most important parts of the face and body are the teeth. Healthy and tidy teeth not only protect the body’s immunity but also make the person’s face and smile look more beautiful. That is why dental care is very important and everyone must follow its tips.
Dental care includes tips before treatment or after treatment.
The passage of time and, naturally, the increase in lifespan has a direct effect on the health of teeth, so aging is one of the factors that cause tooth decay.
On the other hand, some many factors and disorders occur at a young age and if they are not taken care of in time, they cause the loss of teeth.
Losing teeth disrupts the order of the body and causes many problems for the patient, including digestive problems such as not chewing well and digesting food.
Also, the absence of teeth or decay, which is accompanied by the blackening and yellowing of the teeth, causes the loss of facial beauty and self-confidence.
To have white and beautiful teeth, you must follow the dental care tips daily and carefully. Otherwise, you will not only lose the beauty of your face but also cause many oral and dental diseases, including decay and gum infection.
Humans, like other mammals, are diphodonts, meaning they have two sets of teeth. The first set of teeth (called the baby’s primary or baby teeth) usually begins to appear at around six months of age, although some babies are born with one or more visible teeth. Humans have four types of teeth, each of which has a specific function
Knowing the different types of teeth and their function is necessary to maintain proper dental hygiene and prevent dental problems. By observing proper dental hygiene and visiting the dentist regularly, people can have healthy teeth and maintain their overall health.
Dr. Majid Zohrabi started treating his patients in Dubai in 2022 and continues his activities in private medical centers in the UAE.