Almost everyone has experienced gums that bleed while brushing. And because it doesn't hurt, we tend not to worry about it. Yet that little trace of blood is a warning sign you shouldn't ignore: it can be the first sign of a developing periodontal disease. In fact, after the age of 45, periodontitis has become the leading cause of tooth loss — ahead of cavities. The good news? When managed properly, these diseases can be prevented and stabilised very effectively. Here's what you need to know, and do, in Luxembourg.
"No, it's not normal": bleeding gums are a warning sign
As Dr Adrian Brun, hospital dental surgeon and teacher-researcher, explained in an interview with franceinfo ("C'est ma santé", 21 June 2026), bleeding gums are "often considered secondary" because there is no pain, unlike a toothache. "But no, it is not normal, and it may be the sign of a future condition, either already present or developing."
In other words: healthy gums are pink, firm and do not bleed. If they bleed when you brush or floss, they are inflamed — and that inflammation deserves a professional's attention.
From gingivitis to periodontitis: understanding how it progresses
It all starts with an imbalance of the bacteria naturally present in the mouth. Left unmanaged, they build up and cause two conditions worth knowing:
- Gingivitis: the first and most common gum disease. According to Dr Brun, around 80% of the population will be affected at some point in their life. The gums become red, swollen and bleed easily. At this stage, the good news is that gingivitis is fully reversible with good hygiene and a professional cleaning.
- Periodontitis: the gum is a protective barrier. Once it is breached, inflammation reaches the deeper tissues and attacks the bone that holds your teeth in place. This bone is gradually destroyed, teeth loosen and may eventually fall out.
Periodontitis: the leading cause of tooth loss after 45
It's a fact still little known to the public: "Today, in countries like France, we lose far more teeth to periodontitis than to cavities," notes Dr Brun. And the scale is significant: after the age of 45-50, nearly half the population develops some form of periodontitis.
Fortunately, not all forms are severe. But since "we don't know who will develop a severe form," the message is clear: it's better to prevent it in everyone, before the disease even sets in. Hence the importance of regular check-ups, even when everything seems fine.
The real causes: bacteria, tobacco and sugar
The problem isn't having bacteria — we all do — but their organisation and imbalance, driven by several factors:
- Tobacco: it weakens the gums and makes the action of bacteria more harmful. More deceptively, it causes vasoconstriction: smokers bleed less from the gums and therefore wrongly believe they have no problem. Tobacco masks the symptoms while the disease progresses.
- Sugar: mainly free sugars (sweets, pastries) — including "hidden" sugars in many ready meals. They feed the bacteria that cause cavities on the teeth and gingivitis then periodontitis on the gums.
- Insufficient hygiene: without daily plaque removal, bacteria organise into a biofilm and tartar sets in.
How to prevent it: brushing… and above all interdental brushes
"The vast majority of prevention is brushing," sums up Dr Brun. But not just regular brushing:
- Tooth brushing: twice a day, two minutes, with a soft brush and fluoride toothpaste.
- Interdental cleaning: the key step too often neglected. Dental floss is hard to use effectively; this is where interdental brushes really come into their own, offering very effective prevention of both cavities and gum disease. Your dentist will recommend the size suited to your gaps.
- Limit tobacco and free sugars and have your gums checked regularly.
Good news: periodontitis can be treated and stabilised
Even when the gum is already damaged, action is possible. "Like diabetes, periodontitis can be stabilised," explains Dr Brun. And today's treatments are "often much simpler and far less invasive" than a decade ago:
- Scaling to remove the plaque and tartar that trigger inflammation.
- Root surfacing: gently cleaning the areas "opened up" by bacteria between the gum and the tooth, allowing the body to heal and close — depriving the bacteria of their foothold.
- Regular periodontal follow-up to maintain results over time.
And in Luxembourg? Prevention and CNS reimbursement
In the Grand Duchy, periodontal prevention is strongly supported by the CNS (Caisse Nationale de Santé):
- Scaling reimbursed: covered at 88% for adults and 100% for children under 18, up to twice per calendar year.
- No upfront payment: at Dentalplus in Bonnevoie, we apply direct third-party payment. You only pay the remaining portion, with the rest billed directly to the CNS.
- Comprehensive care: our multidisciplinary team provides periodontal assessment, scaling, root surfacing and follow-up, in a modern practice equipped for gentle, precise treatment.
When should you see a dentist without delay?
- Your gums bleed when brushing, even occasionally.
- They are red, swollen or tender.
- You have persistent bad breath.
- Your teeth look "longer" (receding gums) or feel slightly loose.
- You smoke: have your gums checked even without any bleeding.
Key takeaways
- Bleeding gums are never "normal": they are an early warning sign.
- Gingivitis (80% of the population) is reversible; untreated, it can progress to periodontitis, which destroys bone and causes tooth loss.
- After 45-50, nearly one in two people develops periodontitis — the leading cause of tooth loss.
- Key prevention: brushing + interdental brushes, less tobacco and free sugar.
- Periodontitis can be stabilised with modern, minimally invasive treatments.
- In Luxembourg, scaling is reimbursed by the CNS (88% adults, 100% children, twice a year), with no upfront payment at Dentalplus.
Check the health of your gums
A simple periodontal assessment can detect inflammation before it worsens. If your gums bleed or your last scaling was more than a year ago, book an appointment: our team welcomes you in Bonnevoie 7 days a week to protect your smile, gently.
Book a periodontal check-up online at Dentalplus →
Or call us: (+352) 27 52 18 25
Article written by the Dentalplus Luxembourg team · 3 Rue de Houffalize, 1737 Bonnevoie
Contact: contact@dentalplus.lu · (+352) 27 52 18 25
Source: interview with Dr Adrian Brun (dental surgeon, teacher-researcher), franceinfo "C'est ma santé", 21/06/2026, in partnership with AP-HP. This article is informational and does not replace a consultation.