Tooth decay remains the single most common reason a child in England ends up in hospital for a planned procedure, and Southend-on-Sea is no exception. The good news is that almost every cavity we see is preventable with a handful of small daily habits and regular check-ups. The slightly less good news is that those habits aren’t always intuitive, and many parents only realise something has gone wrong when their child starts pointing at a back tooth and refusing crunchy food.
If you’d like a clinical overview of what we cover for under-18s, our children’s dentistry page lays out the appointment structure, what to expect at each age, and how NHS care works for your family. NHS dental treatment is free for children under 18 in England (and under 19 if they’re in qualifying full-time education), so cost should never be the reason a small problem turns into a big one.
Why children’s teeth decay so quickly
Children’s enamel is thinner than adult enamel, and the grooves on their back molars are deeper and harder to clean. Add a typical British diet (juice in the morning, a snack at break, something sweet after school, pudding after tea) and you have plenty of acid attacks across the day. Each time sugar hits the mouth, the pH drops for roughly 20 to 40 minutes. Saliva eventually neutralises it, but if the next snack lands before that recovery is complete, the enamel never gets a break.
Frequency, in our experience, matters more than total quantity. A child who has one chocolate bar in a single sitting is doing less damage than a child who sips squash from a beaker for three hours.
Bedtime is the other quiet villain. Saliva flow drops while we sleep, so any sugar still present after the last brush has hours to feed bacteria undisturbed. That’s why “brush and bed” really does mean nothing to eat or drink afterwards except plain water.
Spotting decay before your child complains
By the time a child says a tooth hurts, the cavity has usually reached the dentine, which is the softer layer underneath the enamel. Earlier signs are subtler and worth checking for during weekend brushing sessions:
- Chalky white patches near the gumline, particularly on upper front teeth
- Brown or grey shadows in the grooves of back molars
- A child suddenly favouring one side when chewing
- Bad breath that persists after brushing
- Sensitivity to cold drinks or ice cream
White spot lesions are reversible. Brown ones usually aren’t.
Practical prevention at home
The NHS guidance is straightforward and worth following to the letter. Brush twice a day with a fluoride toothpaste, last thing at night and on one other occasion. Spit, don’t rinse, so the fluoride keeps working. For under-3s, use a smear of toothpaste containing at least 1,000 ppm fluoride. From 3 to 6, use a pea-sized blob of family toothpaste at 1,350 to 1,500 ppm. Children over 6 use the standard adult strength.
That said, technique matters more than effort. A two-minute scrub with a panicking toddler is not the same as two minutes of methodical, calm brushing on every surface. We often suggest parents brush their child’s teeth themselves until age 7 or 8, then supervise until 10. It feels excessive when a child is reading chapter books and choosing their own clothes, but the manual dexterity for proper brushing genuinely doesn’t arrive until the back molars come through.
| Age | Toothpaste amount | Fluoride strength | Who’s brushing |
|---|---|---|---|
| 0 to 3 years | Smear | 1,000+ ppm | Parent fully |
| 3 to 6 years | Pea-sized | 1,350 to 1,500 ppm | Parent fully |
| 6 to 8 years | Pea-sized | 1,350 to 1,500 ppm | Parent supervises closely |
| 8 to 10 years | Standard | 1,350 to 1,500 ppm | Parent supervises and checks |
| 10+ years | Standard | 1,350 to 1,500 ppm | Child with occasional checks |
Diet changes that actually work
Parents in our chair often expect a lecture on cutting out sweets entirely. We rarely give one. Banning sugar usually backfires, and birthday parties are part of childhood. What works better is changing when sugar happens.
Keep sugary food and drink to mealtimes. Between meals, stick to water or milk. Fruit juice and smoothies count as sugar, even when they’re labelled “no added sugar”. Squash counts too, even sugar-free squash, because the acid still erodes enamel.
Worth knowing: dried fruit sticks to teeth aggressively. Raisins look healthy and they are nutritionally fine, but eaten between meals they’re closer to toffee than apple in their effect on enamel.
What treatment looks like at Westcliff
The earlier we catch decay, the smaller the intervention. Here’s roughly what each stage involves for a child:
- Early white spot lesion. Fluoride varnish applied four times a year, careful brushing technique review at home, and dietary advice. Often reverses entirely.
- Decay confined to enamel. A small filling, usually tooth-coloured composite, sometimes with no need for an injection if the cavity is shallow.
- Decay into dentine. A larger filling under local anaesthetic. We use topical numbing gel first so the injection itself isn’t a shock.
- Decay into the nerve. A pulpotomy on a baby tooth, or root canal treatment on a permanent tooth, followed by a stainless steel preformed crown to protect the remaining structure.
- Tooth beyond saving. Extraction, sometimes under sedation or general anaesthetic at a hospital if multiple teeth are involved.
Honestly, the jump from step 2 to step 4 can happen in months on a back molar. That’s why we routinely recommend six-monthly check-ups even when nothing seems wrong.
Fissure sealants and fluoride varnish
For children prone to decay, or where the molar grooves are particularly deep, sealants and varnish work as a proper insurance policy. Fissure sealants are a thin plastic coating bonded to the chewing surface of permanent back molars, usually applied around age 6 or 7 when the first adult molars come through. They take about 10 minutes per tooth, no drilling, no anaesthetic. Fluoride varnish is painted on directly and reapplied every three to six months. The NHS overview of tooth decay covers the evidence base in plain English if you want to read more.
Both are routinely available on the NHS for children, so there’s no extra cost beyond the appointment time.
When to bring your child in
Most children should be seen every six months from the time their first tooth appears. If you’ve moved to Southend recently, or your child has never had a dental appointment, please don’t wait until something hurts. The first visit is mostly about building familiarity, counting teeth, and giving you specific brushing feedback.
Between visits, the daily routine genuinely is what determines whether decay shows up at the next check-up. Two minutes of proper brushing, twice a day, with the right amount of fluoride toothpaste, and sugar kept to mealtimes. That’s the entire formula. Everything else (electric versus manual, mouthwash, flossing, special children’s products) is secondary and far less important than getting the basics right consistently.
Parents often ask whether they should be using disclosing tablets at home. For an older child who’s resistant to brushing properly, a weekly disclosing tablet that stains plaque pink can be genuinely eye-opening. Children who can see the plaque tend to brush it off properly, and the change in technique often lasts long after the tablets stop.
If you’re in Southend or Westcliff-on-Sea and would like our team to take a look, you can reach Westcliff Dental Practice on 01702 344 500. We see children of all ages on the NHS and we’re happy to talk through any concerns before booking, particularly if your child has had a difficult experience elsewhere or is anxious about the chair.
