Bleeding gums in pregnancy: what is normal, what is safe, and when to be seen

The mechanism is unusually clear-cut. Rising oestrogen and progesterone increase blood flow to the gums and change the way the tissue reacts to inflammation. Small blood vessels become more permeable, the tissue swells more readily, and certain bacteria in the plaque find the hormonal environment more favourable.

The important detail is what does not change: the trigger. Pregnancy does not inflame gums on its own — plaque still has to be sitting at the gum line. What changes is the size of the reaction. An amount of plaque that produced no visible response last year can now produce swollen, glossy, bleeding margins. That is why the answer is almost never “brush less because it bleeds” and almost always “clean the margin more carefully than before, because the tissue is less forgiving now”.

There is one more layer that rarely gets mentioned. Pregnancy brings nausea, changed eating patterns, frequent snacking, more acidic drinks and, for many women, a genuine aversion to the taste or feel of toothpaste. Every one of those makes the plaque situation worse at exactly the moment the tissue has become more reactive.

That last row matters more than it looks. Most pregnancy-related swelling recedes on its own once hormones normalise. Anything still bleeding three months after the birth was never purely hormonal, and it deserves a proper examination rather than another few months of waiting.

Some women develop a distinct red lump on the gum between two teeth, usually in the upper front region and usually from the second trimester onwards. It bleeds easily, sometimes at a touch, and can grow to the size of a small pea. Its German name is Schwangerschaftsgranulom; older textbooks call it an epulis gravidarum.

It looks far more alarming than it is. This is benign overgrown inflammatory tissue, not a tumour in the sense people fear, and it usually shrinks away by itself in the months after the birth. It should still be shown to a dentist — partly to confirm what it is, partly because it grows around a spot where plaque is trapped, so cleaning that specific site carefully often stops it enlarging. Removal during pregnancy is only considered when it genuinely interferes with eating or bleeds constantly, since it tends to come back while the hormones are still driving it.

Local anaesthetic (Betäubung). Treating a painful tooth with a local anaesthetic is considered appropriate in pregnancy. Pain and the stress of enduring it are not the safer option. Tell us you are pregnant and how many weeks, because it influences the preparation and dose we choose.

X-rays. We avoid X-rays in pregnancy where we reasonably can, particularly in the first trimester, and most decisions can be made without one. Where an image is genuinely necessary — a suspected abscess, for instance — modern digital dental X-rays use very small doses, the beam is directed at the jaw and shielding is used. An untreated infection carries more risk than a single necessary image.

Professional cleaning (professionelle Zahnreinigung, PZR). Appropriate at any stage and often the single most useful thing you can do for pregnancy gingivitis. It removes the hardened deposits that brushing cannot reach.

Fillings and treatment of decay. Best placed in the second trimester when possible. Leaving a painful tooth until after the birth is rarely the calmer choice — newborns do not free up dental appointments.

Medication. Not everything used in dentistry is suitable, which is exactly why we ask. Never take leftover antibiotics or strong painkillers from a previous prescription during pregnancy; ask us or your gynaecologist first.

Stomach acid is far more aggressive to enamel than anything you eat. Frequent vomiting bathes the inner surfaces of the upper front teeth in acid, and the damage is silent until the teeth start to feel sensitive or look translucent at the edges.

The instinct afterwards is to brush immediately. Do not. Enamel is temporarily softened for a while after acid contact, and brushing in that window scrubs away the softened surface. Rinse with water, or with a teaspoon of baking soda in a glass of water, wait about half an hour, then brush. If toothpaste itself triggers nausea, switch to a mild flavour or a children’s paste and brush with a small head — the fluoride matters more than the mint.

Constant snacking has a similar effect through a different route. It is not the amount of sugar that decides but the number of acid attacks per day, so grouping snacks rather than grazing across the afternoon makes a measurable difference.

You may have read that gum disease in pregnancy is linked to premature birth or low birth weight. Studies have found associations, and researchers continue to investigate them, but the evidence that treating gums during pregnancy changes those outcomes is not settled. It would be wrong to present it as established, and it would be wrong to frighten anyone with it.

The sound reason to treat inflamed gums during pregnancy is simpler and does not depend on that debate: inflammation is uncomfortable, it makes eating and cleaning harder, it can progress to the bone-supporting tissue if it runs for long enough, and it is straightforward to bring under control now. That is reason enough.

Facial swelling with toothache is the one item on that list that should not wait for a convenient appointment. Ring us the same day, or use the out-of-hours service (Notdienst) at the weekend.

German maternity care runs largely through your gynaecologist and, in most cases, a midwife (Hebamme), documented in a booklet called the Mutterpass that you carry to every appointment. Dental care sits outside that system — nobody automatically books it for you, and this is where newcomers most often fall through the gap.

Two practical points. First, the statutory health insurance (gesetzliche Krankenversicherung, GKV) covers dental check-ups and treatment as normal during pregnancy — but there is no separate pregnancy package in the statutory catalogue. Your entitlement is the same as everyone else’s: the routine check-up and the removal of hard deposits (Zahnsteinentfernung) once a calendar year. A professional cleaning (professionelle Zahnreinigung, PZR) is not a statutory service, although a number of individual funds do pay for one voluntarily around a pregnancy — sometimes as a fixed contribution, sometimes as a full session, sometimes for both expectant parents. That is worth one phone call to your own fund before you book. Second, keep your bonus booklet (Bonusheft) stamped: pregnancy is not an exemption, and gaps cost you money years later when a crown is needed.

If explaining nausea, medication and hormone questions in German feels like one obstacle too many, you can do all of it in English with us. English-Speaking Dentist in NRW sets out how appointments, insurance and paperwork work for people who arrived recently.