Genes and teeth
Genes largely determine who we are. Hair color, risk of hereditary diseases, personality traits, character, and certain tendencies are written in the genetic code that individually defines us. But can the genes inherited from our parents affect the condition of our teeth? Yes and no.
Tooth and jaw alignment
The shape and size of the jaw depend on genes. Crowding, gaps, underbites, and overbites are a direct derivative of the DNA we receive. Of course, all inherited traits can be improved, for example, by wearing braces, undergoing jaw surgery, or other procedures that will improve the appearance of the teeth. However, we are not able to help ourselves here on our own in any way.
Losses
Tooth decay is a classic example of the influence of genetic and behavioral factors. Tooth decay and gum disease can be affected by individual variations in the beta-defensin 1 (DEFB1) gene, which helps fight germs. The DEFB1 gene plays a crucial role in the first line of immune response against invading germs. Numerous studies have shown that certain variations along this gene are linked to higher levels of tooth decay. Of course, some people are predisposed by their genetic code to be more susceptible to developing cavities, but a lack of basic dental hygiene will cause even the genetically strongest teeth to decay sooner or later.
Gum disease
Periodontal (gum) disease, characterized by inflammation and sensitivity, may be linked to the FAM5C gene. Research conducted by scientists has shown a higher level of FAM5C activation in areas of diseased gum tissue than in healthy tissue, suggesting a link between gene expression and periodontal health. The FAM5C gene is also associated with cardiovascular diseases, where, much like in gum disease, inflammation plays a major role. Individuals with compromised immune systems are more susceptible to gum disease because it is harder for their bodies to fight off bacteria.
Oral cancer risk
It is often believed that the risk of cancer is genetic, and it is not uncommon to hear that it "runs in the family." People with certain genetic markers are more prone to oral cancer, but as it turns out, in this specific case, genetics does not have to be the primary factor. Poor lifestyle choices (smoking, alcohol, drugs, lack of oral hygiene) are definitely a much bigger problem in the case of cancer than genetic predisposition.
Amelogenesis imperfecta
In some cases, mutated genes can cause the enamel—the protective outer layer of the tooth—to malfunction. The teeth then appear yellow, brown, or gray, and due to the lack of enamel protecting the teeth from germs and decay, they break and fall out very easily.
Dentinogenesis Imperfecta
This is a genetic disease affecting 1 in 6,000 to 8,000 people. It causes discoloration of the teeth to a translucent blue-gray or yellow-brown color. The disease weakens the teeth, making them more prone to cracking. It can affect both baby teeth and adult teeth.
Summary
Although genetic factors can directly affect overall oral health, they do not constitute a definitive sentence. "Linked" does not mean "determined by" - so even if someone has one of the genes associated with a higher risk of cavities or gum disease, proper oral hygiene and prevention can prevent the disease from occurring. It is always important to remember to brush your teeth twice a day, floss at least once a day, and visit the dentist regularly. Proper cooperation with a good dentist will help keep your mouth in top shape, regardless of your genetic predisposition.
