Effect of heredity on dental orthodontics treatment

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Many papers and studies have sought to determine the effects of heredity on orthodontics. Does heredity affect orthodontics? Can an orthodontist mitigate or minimize these effects as much as possible through skills and expertise? The complexity of elements such as facial and dental growth, physiology of dental movement, and the curvature of the outer layer of tooth roots in orthodontics can make the identification of effective factors very difficult. Orthodontists agree that the most important genetic experiments that a doctor can conduct should include the description of a patient’s individual and familial life status, for most of the dental and jaw malocclusions are inherited. In other words, if a patient has a lower protruding jaw, there is most likely a hereditary factor meaning that the lower jaws of the patient’s parents or close and distant relatives were also protruding.

Hereditary Variables Affecting Orthodontics

The following variables can be considered the factors affecting an orthodontic treatment. It should always be noted that if a skilled orthodontist changes the positions of jaws and teeth to the null status, there is nearly zero chance that the orthodontic treatment relapses due to hereditary factors.

Photo before and after orthodontic treatment of a patient with a genetic disorder

Facial Growth

Cephalometric radiography is employed to measure facial growth and monitor the genetic changes with the size or morphology of skeletal changes. In dentistry and orthodontics, this is called approximate predictions of facial growth based on the anticipated growth curve. In fact, there is a level of asymmetry in everybody’s face. It is considered scientifically natural.

Difference in Annual Sagittal Growth of Jaws

Prescribing low doses of the growth hormone in the boys and girls experiencing delayed maturity will not only adjust the growth speed of their organs to their ages but also accelerate the growth of their skulls, jaws, and faces.

Skeletal Diversity and Malocclusion

Skeletal class III malocclusion (i.e. protrusion of the lower jaw in dentistry) might be caused by malocclusion in the upper jaw, lower long jaw, or both. It is analyzed thoroughly by an orthodontist in the sagittal plate.

Furthermore, a dentist analyzes other factors such as parental faces, parental malocclusions, genetic diversity in muscles and relevant effects on malocclusions, outer surface of tooth roots in orthodontics, and movements of teeth in order to determine the effects of heredity on the orthodontic treatment.

A patient who suffers from inherited dental malformations and smiles with fixed orthodontics

To What Extent Does Heredity Affect the Orthodontic Treatment?

It should be noted that genetics is not a certain concept and that many factors affect it or are affected by it. Genetics convey different characteristics such as height, weight, blood sugar, blood pressure, intelligence, behavior, and sexual orientations. All of these characteristics, most of the dental and jaw malocclusions, and congenital defects are inherited, although they can be affected by the environment. In other words, both heredity and environment cause dental and jaw malocclusions. A prominent orthodontist can treat malocclusions by identifying their causes.

Effect of heredity on dental orthodontics treatment FAQ

1-If a child’s parents have dental and oral malocclusions, how likely is the child to have dental and oral disorders?

The incidence of dental and oral disorders will be high in such children; however, there is nothing worry about. Patients should start seeing orthodontists at the age of seven. If visits are made every six months, any disorders can quickly be diagnosed; therefore, the orthodontic treatment will be easier and more effective.

2-What are the symptoms of hereditary malocclusions?

High or lengthy jaws and the protrusion of the lower jaw are among the most prevalent hereditary malocclusions of the jaw and face. These malocclusions are not usually acquired. In some cases, if there are no hereditary backgrounds, they emerge as a result of taking hormonal drugs such as somatropin, i.e. the growth hormone.

3-Is the smallness of mouth and jaw hereditary?

Yes. Many patients inherit their facial features such as the smallness of jaw and mouth from their parents.

4-What complications may emerge if hereditary malocclusions are not diagnosed?

Mostly, these patients suffer from complications such as protruding or receding lower (or upper) jaws as well as lack of sufficient space for the growth of permanent teeth (e.g. canines and wisdom teeth). These complications can be prevented by seeing an orthodontist at the right time.

5-How can the hereditary oral and dental malocclusions be overcome?

You just need to comply with the oral hygiene and see an orthodontist to receive the right treatment.

6-To what extent can heredity affect the orthodontic treatment in adulthood?

Undoubtedly, the orthodontic treatment will be more difficult and time-consuming as patients age. Therefore, it is advisable that patients prioritize compliance with the oral hygiene right now. Patients are also advised to see orthodontists at the age of seven to examine and treat oral and dental malocclusions.

Dr Abdolreza Jamilian Orthodontist
About Dr Abdolreza Jamilian Orthodontist

Dr. Jamilian, an orthodontist, has a specialized fellowship in orthodontic surgery and maxillofacial abnormalities and is a full-time professor in the orthodontics department of the Dentistry School of the Islamic Azad University. He is member of Iranian and European Board of Orthodontics (EBO) and is a member of the Iranian, American and European Orthodontists Association.

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