Tooth decay in children is more common than many parents realise, and when a filling is needed, questions about the right material and process naturally follow.
The short answer is yes — children can have white fillings, and at Coniston Dental Practice, composite resin (tooth-coloured) dental fillings are what we use for patients of all ages. But there are some age-related and tooth-specific considerations that are worth understanding before your child’s appointment.
Are White Fillings Safe for Children?
Composite resin fillings have been used in paediatric dentistry for many years and have a strong safety record. The material is free from mercury — a concern some parents raise in connection with older amalgam (silver) fillings — and bonds directly to the tooth structure, which means less drilling is typically required to prepare the cavity compared with amalgam.
The British Dental Association supports the use of composite fillings in routine dental care, and they’re considered a safe and appropriate choice for both primary (baby) teeth and permanent teeth.
In our experience, parents are often reassured to learn that composite fillings involve less tooth preparation than older materials, which is particularly relevant when treating children’s smaller teeth.
Fillings in Baby Teeth vs Permanent Teeth
A common question is whether it’s worth filling a baby tooth at all, given that it will eventually fall out. The answer depends on the age of the child and which tooth is affected.
Baby teeth serve several important functions that make treating decay worthwhile in most cases.
- Chewing and nutrition: Decayed baby teeth can be painful and make eating difficult, affecting a child’s diet and wellbeing.
- Speech development: Front baby teeth play a role in the development of certain speech sounds.
- Space maintenance: Baby teeth hold space in the jaw for the emerging permanent teeth. Early loss can cause adjacent teeth to drift and create orthodontic problems later.
- Infection risk: Untreated decay in a baby tooth can develop into an abscess that, in some cases, can affect the developing permanent tooth underneath.
For a young child’s back molar that won’t be replaced by a permanent tooth until age 11 or 12, treating decay early almost always makes sense. For a front tooth that’s only six months from natural shedding, the calculation is different, and we’ll discuss this with you at the appointment.
What Does the Treatment Involve for a Child?
The process of placing a white filling in a child’s tooth is very similar to the adult process, with the main differences being the size of the cavity and the approach we take to keep younger patients calm and comfortable.
We’ll apply a topical anaesthetic gel to the gum before giving a local anaesthetic injection, so the area is numb before any treatment begins. Most children experience very little discomfort during the procedure itself. We work at a pace that suits the child, explaining each step in age-appropriate language.
| Step | What Happens | Typical Duration |
|---|---|---|
| Numbing | Topical gel, then local anaesthetic injection | 5–10 minutes |
| Cavity preparation | Removal of decayed tooth material | 5–10 minutes |
| Filling placement | Composite resin applied in layers and cured with a light | 10–15 minutes |
| Bite check and polish | Adjustment and smoothing of the surface | 5 minutes |
For anxious children or complex cases, we can discuss options such as relative analgesia (sometimes called happy air or inhalation sedation) to help them feel more relaxed during the appointment.
How Long Do White Fillings Last in Children?
The lifespan of a composite filling in a child’s tooth depends on several factors: the size and location of the cavity, the child’s diet, and how well they clean their teeth. In permanent teeth, composite fillings typically last five to ten years or more. In baby teeth, durability matters less — what matters is that the filling holds until the tooth naturally falls out.
And with good home care and regular check-ups, most fillings in children’s teeth perform very well for as long as they’re needed.
Preventing Decay in the First Place
The best filling is the one that was never needed. Prevention in children centres on a few well-evidenced habits.
- Start brushing early: Begin brushing as soon as the first tooth appears, using a smear of fluoride toothpaste for children under three, and a pea-sized amount from age three onwards.
- Supervise brushing: Children generally need parental supervision when brushing until around age seven or eight, to ensure the technique is effective and all surfaces are cleaned.
- Limit sugar frequency: It’s not just how much sugar children eat, but how often. Frequent snacking on sugary or acidic foods keeps teeth under repeated acid attack. Limiting sugar to mealtimes reduces this significantly.
- Fissure sealants: Once permanent molars come through, we can apply a protective sealant to the deep grooves on the biting surface to prevent decay from starting there.
- Regular check-ups: Starting dental visits early — ideally from when the first tooth appears — builds familiarity with the practice environment and allows any problems to be caught early.
The NHS guidance on children’s dental care provides a useful overview for parents who’d like to read more about the basics.
Bringing Your Child to Us in Surrey
We aim to make every child’s experience at our practice as positive as possible. A good first experience at the dentist — ideally a routine check-up before any treatment is needed — sets the tone for a lifetime of regular attendance and good dental health.
If you’d like to discuss your options with our team, you’re welcome to get in touch with Coniston Dental Practice on 01932 343 675.
