One of the dental anomalies is the so-called “shark teeth”. This is when a child’s teeth grow in two rows – a photo of how it looks can be seen below. This phenomenon is not considered normal and requires therapy. It can manifest itself in absolutely any baby, and in medical practice, it occurs quite often. Therefore, it is important for every parent to know what preventive measures to take in order to prevent this from happening. And also what to do if the pathological condition has already appeared, and how long the treatment will continue. Specialists of the dental clinic “Dentika” tell about it in detail.

pictures of double teeth

A child’s teeth grow in two rows – what does this mean

This anomaly is called polyodontia. This is an abnormal development of the dentoalveolar system, characterized by the multiple appearances of molars and milk teeth. Most often they erupt on the upper jaw. As a rule, they are small in size and cone-shaped, teardrop-shaped.

Pathology should not be scary, it can be corrected. If you notice irregularities, you need to make an appointment with a pediatric dentist. You can’t leave everything as it is. Firstly, the two rows of teeth causes discomfort and interferes with the normal chewing of food. Secondly, it makes the smile unattractive. Thirdly, it increases the risk of developing caries as a result of crowding and the lack of the ability to carefully carry out hygiene procedures.

What is a superset

In this situation, a person has inconsistencies in the formation of the dentoalveolar system. With pathology, he has extra incisors, canines, molars, and premolars, which are considered abnormal.

Usually, 52 pieces are formed during the entire human life:

  • 20 dairy;
  • 32 permanent.

With an anomaly, there may be 1-2 additional dental units, but sometimes they erupt in a much larger number. Currently, in medical practice, such a pathological condition is diagnosed more and more often. According to statistics, it accounts for 2% of all dental problems. Also, pathology can be observed in adult patients. In medical practice, it is called “hyperdontia” and needs treatment.

Supernumerary teeth lead to the development of a diastema, inclination, and displacement in the oral, vestibular, or lateral direction. Very rarely they erupt without any dentoalveolar anomalies.

Why does the second row grow in a child?

The process of changing the bite continues from about 5 to 12-13 years. It is in this time period of life that polyodontia is diagnosed. It is more common in preschool age, but it also occurs among adolescents. This happens when molars begin to appear, but at the same time, temporary ones hold firmly in place. As a result, the permanent ones shift their predecessor, creating the effect of “shark teeth”, which in the future without fail need to be corrected in a dental clinic.

Predisposing factors why milk and molars grow the second row in a child:

  • Genetic predisposition (the risk of an abnormal structure increases if it was observed in relatives);
  • Rickets transferred in infancy;
  • Sucking on a pacifier or thumb after one year of age;
  • The strength of the first teeth due to the small amount of solid food in the diet;
  • Consequences of infectious and chronic diseases;
  • Irrational and unbalanced nutrition;
  • Lack of vitamins, minerals, and other useful substances in the body that are necessary for proper development;
  • Abnormal arrangement of rudiments;
  • Mouth breathing in ENT diseases;
  • Early removal of milk or premature eruption of molars;
  • A history of pulpitis (roots without a nerve are poorly absorbed, which leads to difficulties in pushing them out);
  • Underdevelopment of the upper and/or lower jaw, which leaves insufficient space.

These reasons increase the risk of polyodontia.

What could be the consequences

Even if one unit cuts through in the wrong place, it needs to be corrected, which takes an average of 1 month. In the absence or incorrectly chosen therapy regimen, serious complications can occur:

  • Violations of diction due to the inability to pronounce some sounds normally;
  • The curvature of adjacent healthy teeth;
  • Significant pathological changes in the bite due to displacement;
  • Death of permanent primordia or their abnormal eruption;
  • Diseases of the gastrointestinal tract due to poor-quality chewing of food;
  • Chronic osteomyelitis;
  • Severe pain, injury, and inflammation in the mucous membrane due to increased pressure;
  • Diastema and trema;
  • Psychological problems due to violation of aesthetics.

The sooner effective treatment is started, the lower the risk of these consequences.

teeth grow in two rows in children

How to understand that there is a possibility of polyodontia

Symptoms indicating that the child’s molars are climbing in the second row:


  • Pain
  • Swelling, swelling of the gums
  • General malaise, fever up to 38-39 degrees
  • No interdental gaps
  • Profuse salivation
  • Development of rhinitis
  • Milk tooth loosens but does not fall out


  • They are aggravated by pressure or during the consumption of food. Soft tissues can become inflamed
  • This happens as a result of high pressure.
  • The inflammatory process is often accompanied by hyperthermia. Feeling weak, and aching in the body, including in the muscles
  • From about four years old, large gaps appear in children. If this does not happen, most likely, there will not be enough space for all dental units.
  • In a pathological condition, the nasopharynx swells, which is why the nose is blocked. You have to breathe through your mouth, and this dries up the mucous membrane. A large amount of saliva is a protective reaction
  • Occurs in the presence of edema
  • This can be observed in the absence of solid food in the diet or due to various pathologies of the dentoalveolar system.
  • During the period of bite change, parents should regularly inspect the oral cavity. If suspicious signs appear, contact a pediatric dentist for diagnosis and prescribing an effective treatment regimen, if necessary.

The Periodontist Who is It and What Does Such a Doctor Treat?

What to do with a double row

Nothing can be done at home. It is extremely important to contact the orthodontist at the dental clinic if an alarming clinical picture is detected. It is this specialist who is engaged in the treatment when the child’s molars climb in the second row. The doctor will assess the prospects for the development of the dentoalveolar system, send it for an X-ray to accurately determine the rudiments of permanent dental units, and take the necessary measures.

After the diagnostic measures are taken, the dentist may advise the following:

  • Increase the number of solid foods on the menu. This will provide additional pressure, due to which the root will calmly come out of the gum.
  • Expect a natural bite change. This will allow the cutter to stand in its intended place.
  • Remove some teeth in children so that they do not appear in 2 rows. This will force free space for new ones to spawn normally.

The last measure is extreme. It is prescribed in cases where other methods of correction are unable to give the desired result. First of all, the doctor tries to save the dental units by installing braces or caps.

In most cases, treatment does not take long. It can be delayed only when two-row is accompanied by other pathologies. For example, an underdeveloped jaw. In such a situation, therapy will last longer, up to about six months.


The decision about it is made by the dentist on the basis of the diagnostic tests performed. To remove teeth in children, if they have grown up the second row, you need:

  • When the root climbs, and the milk one does not even stagger;
  • If a loosening of the predecessor is observed, but he does not want to fall out;
  • The anomaly brings severe pain and provokes injury and inflammatory processes.

Extraction is carried out only after a white dot appears on the surface of the gum – part of the crown. The surgery is performed under local anesthesia, so the baby will not feel pain. It may appear after the end of the effect of anesthesia but is eliminated with the help of painkillers prescribed by a doctor.

Two identical dental units are removed at once. This is necessary for the formation of the correct bite. The only exceptions are fangs, which change at an older age.

After that, in most cases, no further action is required. Teeth growing in 2 rows in a child are aligned independently. However, in any case, periodic visits to the dental office will be required. The dentist will continue to monitor the correct development. If a new incisor, molar, or premolar begins to develop in the wrong position, then a bracket system may be prescribed.

how to fix shark teeth in child

Installation of braces

These are special devices that are orthodontic fixed brackets. Designed for correcting bite and alignment of dental units.

This is an effective method of correction, but its cost is not cheap. There are various types of these structures:

  • Classic metal;
  • Plastic;
  • Sapphire and others.

The final choice depends on the characteristics of the pathological condition and its complexity, as well as financial capabilities. There are models that are almost invisible, thanks to which the child does not experience psychological discomfort, and does not hesitate to talk and smile with peers.

Teeth growing in two rows in children are corrected by a specialized arch. It is given the necessary shape and placed on the surface of the dental units, secured with miniature locks. The essence of the action is as follows:

  1. The metal wire tries to take a given shape.
  2. In the process, she pulls the locks behind her.
  3. Thanks to this, incisors, molars, premolars, and canines take the correct position.

Please note that if you have braces, you need to visit the dental office every month for correction. The specialist will periodically change the archwire and other elements of the system, conduct professional cleaning and evaluate the therapy regimen used.

The speed of treatment depends on when the structure was placed. Usually, they are put at the age of 12-13 years. During this period, the molars are actively growing, which makes straightening faster and more effective. In addition, the teenager is already able to approach this responsibly and comply with hygiene requirements. This reduces the risk of inflammation and carious lesions. To correct the teeth that appeared in children in 2 rows, it will take approximately 1-1.5 years.

The use of braces will be mandatory for underdeveloped jaws and completion. This is the most effective method that allows you to get a beautiful smile that will last a lifetime.

Cap installation

These designs are also called aligners. Unlike braces, they are removable. They are more suitable for babies, as they do not require constant wear. Usually, they are put on the child for 1 hour during the day and during night sleep. This allows you not to experience psychological discomfort in front of peers. In addition, their cost is lower than that of braces by about 5-6 times.

These devices are elastic tires that repeat the shape of the dentition. They tightly fit the surface, causing mechanical pressure, due to which alignment occurs.

Possible complications after two-row treatment

Unpleasant consequences can occur due to the early removal of an incisor, molar, premolar, or canine:

  • Violation in the development of the upper and lower jaw. Each jaw unit is designed not only to chew food but also to distribute the load, which contributes to normal growth. Even the absence of one tooth leads to the fact that bone structures and soft tissues do not develop enough. This is not always noticeable right away, but problems will arise in the future.
  • bite pathology. Human nature is designed in such a way that it does not tolerate emptiness. Therefore, after removal, they try to fill the empty area with adjacent incisors, molars, premolars, and canines. Accordingly, they shift to the side and grow in a way that is not necessary. When the time comes for the permanent dentition to erupt, there simply won’t be enough room for it. The result is a dystopia. Moreover, this is not only an aesthetic defect but also a physiological one. Additional treatment will be required, which differs in complexity and duration.

Prosthetics can prevent these complications. Immediate is used as prostheses. These are removable temporary structures attached to clasps. The decision on this method of therapy is made by the doctor after the diagnosis.

multiple rows of teeth

Preventive actions

The following preventive measures will help to minimize the risk that a child will have a Two rows of teeth:

  • A timely visit to the dentist. It is not only when problems arise that you need to contact him. It is necessary to visit a doctor every six months for the timely prevention of pathological conditions.
  • Proper diet. It should contain solid foods that contribute to the time loss of milk dental units. In addition, the menu should contain healthy food containing a large number of vitamins and minerals.
  • Nose breathing. If there are diseases that prevent this, they must be treated in a timely manner.
    Compliance with hygiene rules. The kid should brush his teeth 2 times a day, and rinse his mouth after eating. It has to be taught from childhood.
  • Timely refusal of the pacifier, weaning to suck fingers and pull foreign objects into the mouth. All this provokes malocclusion and infectious diseases, leading to orthodontic problems.
  • The correct attitude to new erupting dental units. During this period, they should not be touched with hands and tongues.

Compliance with the listed preventive measures reduces the likelihood of an anomaly to almost zero.

Summarize on Two rows of teeth

We told how to determine that a child is growing teeth in the second row, what it is fraught with, and what to do in this case. It is extremely important to detect the problem in a timely manner and seek qualified help. Specialists of the dental clinic “Dentika” will help to cope with the pathological condition.