“They’re only milk teeth. Won’t they fall out anyway?” It is one of the most common questions parents ask about a child’s cavity, and it is a fair one. The short answer is that most cavities in milk teeth do need treatment, but treatment does not always mean drilling and filling. The right choice depends on how deep the cavity is, which tooth it is in, and how long that tooth still has to last.
Why milk teeth are worth treating
Milk teeth do much more than fill a gap until the adult teeth arrive. Your child uses them to chew, to learn to speak clearly and to smile with confidence. They also hold space for the adult teeth developing underneath.
The front milk teeth usually fall out at around six or seven. The back milk teeth stay much longer, typically until about 10 to 12 years of age. A cavity in a back molar at age four may need to be managed for six or more years.
What happens if a cavity is left alone
Decay in milk teeth can move quickly, because their enamel is thinner than adult enamel and the nerve sits closer to the surface. An untreated cavity can lead to:
toothache, often worse at night
infection, swelling or an abscess
early loss of the tooth, which can let nearby teeth drift and crowd the adult teeth
difficulty eating, poor sleep and missed school days
Infection around a milk tooth can also sometimes affect the adult tooth forming beneath it.
Treatment options, from smallest to largest
Early white spots: no drilling needed
Dull, chalky white spots are the first visible sign of decay, before a hole has formed. At this stage the damage can often be stopped, or even reversed, with fluoride varnish applied by the dentist, fluoride toothpaste at home, and fewer sugary foods and drinks.
A small or medium cavity: a filling
Once a hole has formed, a filling is usually the best option. The dentist removes the decay and fills the space with a tooth-coloured material. In milk teeth this is commonly a composite resin or a glass ionomer cement, a material that also releases fluoride.
Stopping decay without drilling
In some situations, such as a very young or anxious child, a dentist may use a treatment that halts decay without removing it. One option is silver diamine fluoride, a liquid painted onto the cavity that can stop decay from progressing. It permanently stains the decayed area black, which matters to some families, especially on front teeth. Your dentist will discuss whether this is suitable.
A large cavity or a weakened tooth: a crown
When decay has damaged much of a back milk tooth, a filling may not hold. A small crown covers the whole tooth and protects it until it falls out naturally. Crowns for milk teeth come in stainless steel and tooth-coloured options.
Decay that has reached the nerve: pulp treatment
If the decay has reached the pulp, the soft core of nerves and blood vessels, the tooth may need a pulpotomy or pulpectomy, often called a baby root canal, followed by a crown. Our guide to pulpotomy and pulpectomy explains the difference.
When the tooth cannot be saved: extraction
If a tooth is too badly damaged or infected, removing it may be the kindest option. If a back milk tooth comes out years early, a space maintainer can hold the gap open for the adult tooth.
Signs a cavity needs prompt attention
Book a visit soon, rather than at your next routine check, if your child:
– has toothache that wakes them at night
– has swelling of the gum or face near a tooth
– has a pimple-like boil on the gum
– has a fever along with tooth pain
– avoids chewing on one side or refuses food
Facial swelling with fever needs same-day care. Infection from a tooth can spread, and children can become unwell quickly.
Is it ever reasonable to wait?
Sometimes. If a milk tooth is already loose and close to falling out, or a small area of decay is shallow and not progressing, your dentist may suggest monitoring it with regular checks and stronger prevention at home. This is a clinical decision that depends on an examination and often an X-ray. It is not something to judge from home based on how the tooth looks.
Making treatment easier for young children
Many parents worry more about how their child will cope than about the treatment itself. Paediatric dentists use child-friendly explanations, short appointments and gentle techniques. For anxious children, laughing gas (nitrous oxide) can help them relax while staying awake. Children who need a lot of treatment, or who cannot cope in the chair, may be treated under general anaesthesia in a hospital setting.
Preventing the next cavity
Once a cavity is treated, the aim is to stop new ones. Brush twice a day with fluoride toothpaste, limit sugary snacks and drinks between meals, avoid milk or sweet drinks in a bottle at bedtime, and keep up regular check-ups. Dental sealants on the back teeth add another layer of protection.
Frequently asked questions
Will a filling in a milk tooth fall out?
Fillings in milk teeth are designed to last until the tooth falls out naturally, but they can wear or chip. Your dentist checks them at each visit.
Are white fillings safe for children?
Tooth-coloured materials such as composite resin and glass ionomer are widely used in children’s teeth. Your dentist will choose the material that suits the size and position of the cavity.
Can a cavity in a milk tooth heal on its own?
An early white spot can sometimes harden again with fluoride and better habits. Once a hole has formed, it cannot fill back in, and it needs a dentist’s care.
Have your child’s cavity checked
If you have spotted a white patch, a brown spot or a hole in your child’s tooth, a check-up will show which treatment is needed and how urgent it is. Book a visit at Dentistry Junior in JP Nagar online or call 097402 78302.
