How do you recognise gum recession early, and which habits can inadvertently make the problem worse?
Gum recession is widespread and often present without being noticed; the main habit that worsens it is abrasive horizontal brushing with a hard toothbrush, although cause and effect have not been conclusively proven here. Have it checked regularly by your dentist, especially if your teeth become more sensitive or appear to be getting longer.
Gum recession is very common: in a large European study, 87.9% of participants already had at least 1 mm of receded gum tissue. The problem increases with age. Early signs include a visibly longer tooth (as the root begins to become exposed), sensitivity to cold or hot food or drinks, and sometimes a slight notch or colour change at the gum line. Exposed root surface is more susceptible to cavities than the hard enamel on the outer surface of the tooth.
One of the most underestimated habits that worsens recession is the way people brush. Horizontal back-and-forth scrubbing with the toothbrush, the so-called scrub method, appears in several studies as a risk factor for gum loss. In Italian research among dental students, brushing technique was a significant predictor of recession. Hard bristles are likewise flagged as a risk factor in several studies, although evidence from long-term research is lacking. An old, splayed toothbrush can also cause more damage because the pressure per bristle contact point changes.
Whether you are better off with an electric toothbrush than a manual one is not clear-cut. A summary of several studies found slightly more recession with manual brushes after twelve months, but in a randomised study with 52 participants there was no difference in progression. An electric brush caused less superficial gum damage immediately after brushing, but this did not translate into less recession. How you brush appears, for now, to matter more than what you brush with.
Besides brushing, gum inflammation and plaque build-up also play a clear role. In Turkish research, a higher plaque index was significantly associated with recession. Chronically inflamed gums that go unnoticed can cause tissue to slowly recede, even without aggressive brushing. In addition, anatomical factors such as a thin layer of gum tissue or a high frenulum (the band connecting the lip to the gum) were identified as risk factors in the same research. There is little you can do about these yourself, but a dentist can map them and take your specific risks into account.
Early detection is important, but direct evidence that rapid detection alone stops further recession has not yet been demonstrated. The principle is straightforward: a dentist measures the depth and width of the recession and identifies causative factors. If you are experiencing increasing tooth sensitivity or notice that your teeth seem to be getting longer, that is the moment to mention it to your dentist.
This answer is based on reviews, a summary of several studies on brushing-related factors, a randomised study with 52 participants, and two observational studies (one large European study and one Turkish study). The findings on brushing technique and frequency come largely from studies in which people were measured at a single point in time, meaning that cause and effect have not been firmly established. The Turkish study found no association between brushing frequency and recession, while other studies did: that inconsistency has been incorporated into the answer.
What really keeps your mouth and gums healthy?
Daily brushing supplemented with interdental brushes is the best foundation for a healthy mouth; if you have diabetes, regular gum care pays extra dividends for your blood sugar.
What are the symptoms of an underactive thyroid and when should you see a doctor?
An underactive thyroid produces vague complaints such as fatigue, weight gain and cold intolerance, but the diagnosis can only be made through a blood test. If you have recognised several complaints for a while, discuss them with your general practitioner.
Can I prevent or slow down early hearing loss?
Hearing loss caused by noise and by certain medications is very preventable, but for age-related hearing loss no proven interventions yet exist. The greatest gain comes from protecting your ears from loud sounds now.
How do I know whether my fatigue is caused by my thyroid?
Thyroid blood tests can rule out or confirm whether your thyroid is the cause, but a mildly abnormal TSH alone does not explain fatigue and treating it often does not help. In Hashimoto's, symptoms can persist even when your values are normal.
Do your kidneys age at a different rate than your liver?
The kidneys age measurably faster than the liver, but for most healthy people that decline only has major consequences when dosing medications at an advanced age. If you also have high blood pressure or diabetes, it is wise to have your kidney function checked regularly.
What actually helps with chronic low back pain?
Strength and stabilisation exercises have the strongest evidence base for chronic low back pain; if the effect is insufficient, anti-inflammatory drugs are the first pharmacological step, but opioids and surgery can almost always be avoided.