Silver diamine fluoride, often called SDF, is a liquid that can be painted onto cavities to stop them from progressing. It is quick, painless and does not require drilling or injections, making it useful for young or anxious children.
SDF contains silver, which kills bacteria, and fluoride, which strengthens enamel. Together, they can arrest decay.
SDF is useful for young children, anxious children and those with multiple cavities where traditional treatment is difficult.
SDF turns decayed areas black. This is permanent on the treated area but does not affect healthy enamel.
SDF is considered safe when used correctly. It may cause a temporary metallic taste.
SDF may need to be reapplied periodically to keep decay arrested.
SDF can be used to stabilise decay before placing fillings later when the child is older.
SDF does not restore tooth shape and may not be suitable for front teeth due to staining.
Applying SDF is quick and simple. The dentist dries the tooth, protects the surrounding gums and lips, and paints a small amount of the liquid onto the decayed area with a tiny brush. It is left for a short time to soak in, and the excess is removed. The whole process usually takes just a few minutes per tooth, without needles or drilling, which makes it ideal for children who find traditional treatment difficult.
Because SDF darkens decayed areas, parents should discuss appearance before treatment, especially for front teeth. For back teeth that are not visible, the dark colour is often not a concern. For visible teeth, a tooth-coloured filling may be placed over the treated area later to improve appearance. Your dentist will show you photographs of what to expect so you can make an informed choice.
After SDF treatment, children can usually eat and drink normally after a short time, as advised by the dentist. The treated area should be kept clean with regular brushing using fluoride toothpaste. SDF can temporarily stain skin or clothing if it comes into contact with them, so dentists take care to protect these areas during application.
SDF works best as part of a wider plan to prevent new decay. This includes brushing twice daily with fluoride toothpaste, limiting sugary snacks and drinks, regular check-ups and, where appropriate, fluoride varnish and sealants. Treating existing cavities while also preventing new ones gives children the best chance of a healthy smile.
SDF is not suitable for children with a silver allergy or certain mouth ulcers or sores, and it may not be appropriate for teeth with deep decay close to the nerve or signs of infection. Your dentist will examine your child carefully before recommending it.
Parents often ask whether SDF will need to be repeated, whether the black colour will fade and whether fillings will be needed later. Your dentist will explain how often reapplication is recommended, that the staining on decayed areas is generally permanent, and when fillings may be considered as your child grows.
No. It is painted on without drilling or injections.
Yes, decayed areas turn black.
It can stop decay, but fillings may still be needed later.
Ask about gentle cavity treatment options for your child.
Call 03 751 0245 WhatsApp 056 536 4536 Email Us