At Tandarts West in Rotterdam West we see patients every week wondering why their gums bleed when brushing, or why there is a yellowish edge near their teeth. In many cases the answer is tartar. It is a common problem, but luckily it is largely preventable with the right daily care and a six-monthly professional dental cleaning. In this article I explain everything you need to know.
What exactly is tartar?
Tartar, in technical terms calculus dentalis, is calcified plaque. Plaque is a soft, sticky film of bacteria, food residue and saliva that forms on your teeth every day. If you do not remove this film within 24-72 hours, minerals in your saliva (mainly calcium and phosphate) start to harden the bacteria. The end result: a stone-like layer that adheres firmly to the tooth surface.
There are two types:
- Supragingival tartar: above the gum line, often visible as yellowish or light brown crusts along the neck of the tooth. It most commonly appears on the inside of the lower teeth and the outside of the upper molars, because the salivary glands are closest to those spots.
- Subgingival tartar: below the gum line in the "pocket" between tooth and gum. Darker in colour due to blood components, and only visible to the dental hygienist with a probe. This is the more dangerous type.
Plaque turns into tartar within three days. Good daily hygiene is therefore not a luxury, but the difference between healthy and inflamed gums.
How does tartar form?
The chain is always the same: bacteria, then plaque, then calcification, then tartar. But some factors speed up the process considerably:
- Insufficient brushing. Two minutes twice a day with the right technique is the minimum. People who only brush for 30 seconds miss 50-70% of the plaque.
- No interdental cleaning. A toothbrush reaches at most 60% of your tooth surface. Neglecting the spaces between is the #1 cause of tartar.
- Saliva chemistry. Some people naturally have a saliva composition that lets plaque calcify faster. It is hereditary, not your fault, but a reason to come in more often.
- Smoking. Tobacco increases tartar formation and also masks bleeding gums, so problems get noticed later.
- Sugar and starch-rich diet. Feeds the plaque bacteria, especially when snacking between meals.
- Dry mouth. Saliva continuously rinses plaque away; a dry mouth (caused by medication or mouth breathing) speeds up tartar formation.
- Crooked teeth or braces. Hard-to-clean spots are an ideal breeding ground for plaque and tartar.
Why is tartar harmful?
Tartar itself does not cause direct pain, and that is perhaps the biggest problem. It works gradually. The consequences:
Gum inflammation (gingivitis)
The rough surface of tartar is a paradise for new bacteria. They produce substances that irritate your gums. The first signal: red, swollen, bleeding gums when brushing. Many people think this is caused by brushing too hard, but it is usually an infection.
Periodontitis
Untreated gingivitis develops further. The bacteria penetrate deeper, the gums recede, and eventually the bone around the tooth root is affected. This is called periodontitis, and it is the #1 cause of tooth loss in adults worldwide. Once bone loss has occurred it does not come back; only further deterioration can be stopped.
Bad breath
Bacteria in tartar produce sulphur compounds that cause persistent halitosis (bad breath). Mouthwash helps temporarily; only removing tartar truly solves it.
Discolouration
Tartar absorbs pigments from coffee, tea, red wine and tobacco. The result: a yellowish to brown edge near the gums that no amount of whitening-brushing can remove.
General health
Recent scientific research links periodontitis to cardiovascular disease, diabetes complications and even Alzheimer's. The inflammations do not stay limited to your mouth; they affect your whole body.
Bleeding gums are not normal
Many people accept bleeding gums as a fact of life. But healthy gums do not bleed, not even when brushing firmly. Blood when brushing is always a signal of inflammation. Plan an appointment with the dental hygienist if it lasts longer than a week.
How do you prevent tartar?
Tartar is not an inevitable fate; it is largely preventable. The daily routine:
1. Brush properly twice a day
Two full minutes, with a soft (manual or electric) toothbrush and fluoride toothpaste. Use the Bass technique: place the brush at a 45° angle against the gums and make small circular movements. Do not scrub, because that damages the enamel. Read more about choosing the right toothbrush.
2. Clean between the teeth daily
This is where 80% of people fall short. A toothbrush does not reach the sides of the teeth. Use:
- Dental floss (classic, effective for narrow gaps)
- Interdental brushes (more effective for wider openings, also better for older patients)
- Water flosser (an alternative for those who struggle with flossing, not equivalent but better than nothing)
3. Limit snacking
With every eating or drinking moment your teeth sit in an acidic environment for about 30 minutes. Three meals a day = 90 minutes of acid. Six snacks = 180 minutes of acid. Drink water between meals instead of soft drinks or coffee with sugar.
4. Professional dental cleaning twice a year
Even with perfect oral hygiene, tartar forms in hard-to-reach places (behind the lower front teeth, in pockets). The dental hygienist removes it with ultrasonic or hand instruments and polishes the surface smooth, so new plaque adheres less easily. For higher risk profiles (smokers, periodontitis patients, diabetics) 3-4 times a year makes sense.
Tartar removal at the dental hygienist: how does it work and what does it cost?
Once present, tartar can only be removed professionally. Not by whitening toothpaste, not by tartar sticks from the drugstore, and certainly not by scraping it off yourself with an instrument (people do it, and it is risky). What we do in the practice:
Ultrasonic cleaning
The most commonly used instrument: a tip that loosens tartar with ultrasonic vibrations, combined with a rinsing water stream. Fast, effective, and with healthy gums uncomfortable but not painful.
Hand instruments (scaler and curette)
For fine work, especially subgingival tartar or in hard-to-reach places. Requires more precision but gives an excellent result. At Tandarts West Rotterdam we combine both techniques depending on what works best for your teeth.
Polishing
After removal we polish the tooth surface with a paste and a rubber cup. This removes discolouration and makes the surface as smooth as possible, so plaque adheres less easily. It feels wonderfully clean afterwards.
For severe periodontitis: specialised treatment
If there are deep pockets (4mm or deeper), a standard dental cleaning is not enough. We then perform an initial periodontal treatment (the "M-codes" in health insurance terminology): pocket depth measurement, phased cleaning under the gums, and follow-up after 3 months to see if the gums recover.
Removing tartar is not a luxury treatment. It is preventive medicine that helps avoid tooth loss later in life.
What does Tandarts West do for your oral hygiene?
At Tandarts West in Rotterdam West, oral hygiene is a specialty, not an afterthought. What you can expect from us:
- Two dental hygienists in the team. Specialists in periodontology, prevention and tailored advice.
- Personal cleaning rhythm. Not everyone needs 2 visits a year. We determine together what suits your teeth and risk profile.
- Pain-free treatment where possible. For sensitive gums we use ultrasonic with warm water or a local anaesthetic. No one leaves the chair in pain.
- Personal brushing advice. At every cleaning we look at how you brush and give personal advice about techniques, tools and any adjustments.
- Digital contact possible between visits. Send questions between appointments via our registration form or call 010 846 6539.
- Insurance and cost check. Our reception is happy to check whether your supplementary insurance covers dental cleaning, so there are no surprises.
Plan your dental cleaning
Register via our online form and let us know you would like a dental cleaning. Or call 010 846 6539. We are happy to figure out together what rhythm is best for your mouth.
Finally: preventing tartar is always easier (and cheaper) than treating periodontitis. With two minutes of brushing, daily flossing and a professional dental cleaning twice a year at Tandarts West Rotterdam, you keep your teeth and gums healthy for many years. A small investment of time with a big return for your oral health.
Sources
- KNMT (2024). Oral care advice: tartar and dental cleaning. knmt.nl
- Dutch Society of Periodontology (NVvP, 2023). Guideline for periodontal diagnostics and treatment. nvvp.org
- World Health Organization (2023). Global oral health status report: Periodontal disease. WHO Publications. who.int
- Ivoren Kruis (2024). Interdental cleaning recommendations. ivorenkruis.nl

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