You surely know that person: they hardly brush their teeth, eat sweets daily, and yet boast an impeccable set of teeth at every check-up. On the other hand, perhaps you strictly follow the three-minute rule, use dental floss and mouthwash, yet it seems dentist visits always end in a filling.
It’s frustrating, isn’t it? This is where the famous phrase arises: "It's just that I have soft teeth." But does such a thing really exist, or is it just an excuse for poor hygiene? Science tells us the answer lies in a middle ground, and a large part of the explanation is hidden within your genetic code.
Soft teeth or predisposed enamel?
The first thing we must clarify is that teeth are not "soft" due to a lack of willpower. What is popularly called that is usually a combination of a less dense enamel structure or a particular chemical composition of the saliva.
Many people ask: does having cavities have a genetic component? Or even, if a genetic predisposition to tooth decay is a medical reality. The answer is yes: we can inherit genetic factors that facilitate the appearance of cavities.
The genetics behind cavities and saliva
In your tellmeGen report, we analyse the predisposition to dental cavities and periodontitis. It's not that you inherit the "hole" in the tooth, but rather you inherit:
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Enamel hardness: Certain genes determine how hydroxyapatite crystals are formed. If your enamel is naturally more porous, bacteria have an easier path.
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Saliva chemistry: Saliva is your natural defence; it neutralises acids and remineralises the tooth. If your genetics predispose you to more acidic saliva, your protection is lower.
That is why, when you wonder whether dental cavities are hereditary or if tooth decay is hereditary, you should know that your DNA influences how quickly sugar becomes a problem.
The role of the gums: Is periodontitis hereditary?
If you're worried about cavities, gum health is no less important. Many patients discover with surprise that, despite having no cavities, their teeth become loose or their gums bleed. This is where the genetics of inflammation come into play.
Periodontitis is one of the most studied fields in dentistry. If you wonder if it has a hereditary component, science confirms that the way your immune system reacts to plaque bacteria is written in your genes.
It has been proven that genetic factors can cause a person to develop serious infections with very little bacterial plaque. Therefore, yes: periodontitis has a hereditary component. This affirmative answer helps many users understand why, despite their efforts, they suffer from periodontal disease.
Knowing if you have a genetic predisposition to suffer from periodontal disease or periodontitis allows you to be much more proactive in prevention (more frequent professional cleanings, for example).
Calcium and Phosphate
To understand why some teeth seem more resistant, we must look at minerals. At tellmeGen, we analyse your calcium levels and serum phosphate levels.
Think of these minerals as the "bricks" of your teeth. Calcium and phosphorus combine, mainly in the form of hydroxyapatite, to form the hard structure of the tooth.
If your genetics tend to maintain low levels of calcium or phosphate, your "bricks" are, by definition, more fragile. This explains part of the hereditary component of tooth decay: if your body does not manage these minerals well, the natural remineralisation of the enamel will be deficient.
So, is it all genetics or does hygiene matter?
Genetics loads the gun, but lifestyle pulls the trigger. Having a genetic predisposition to suffer from cavities or periodontal disease does not mean you are condemned to lose your teeth. It means your margin for error is smaller.
If your tellmeGen test indicates a high predisposition to cavities or periodontitis, your hygiene must be perfect. It’s not "bad luck"; it’s biology that requires extra care.
Understanding that the hereditary genetic factor exists helps alleviate the guilt of those who feel their efforts are not bearing fruit. It’s not that you’re doing it wrong; it’s that your body needs a different strategy.
Want to know what your genes say about your smile? With the tellmeGen DNA test, you can discover your predisposition to cavities, periodontitis, and your mineral levels, so that your next visit to the dentist is not a surprise, but a successfully executed plan.
