Preparações de flúor para prevenir cáries
Duraphat, Fluor-a-day, FluoriGard
Revisado por Sid DajaniÚltima atualização por Michael Stewart, MRPharmSÚltima atualização 19 Jun 2023
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Fluoride preparations help to prevent tooth decay.
Use your fluoride product exactly as your doctor or dentist tells you to. If you have not been given specific directions, follow the instructions on the package.
Before giving a fluoride supplement (tablets or drops) to your child, make sure your doctor/dentist knows if the area where you live has fluoride added to the drinking water.
Em resumo
Fluoride preparations help to prevent tooth decay by strengthening tooth enamel.
They are available as tablets, drops, mouthwash, and toothpaste.
Different strengths are suitable for various age groups, from babies to adults.
Always follow the specific instructions from your doctor, dentist, or product packaging.
Rarely, using more than directed might cause yellowish-brown tooth discolouration.
About fluoride preparations
Usado para | Prevention of tooth decay |
Também chamado de | Duraphat®; En-De-Kay®; Fluor-a-day®; FluoriGard®; Fluoritop®; oraNurse® |
Disponível como | Tablets, oral drops, mouthwash and toothpaste |
Tooth decay (also called dental caries) occurs when holes form in parts of the enamel of a tooth. The main cause is due to a build-up of plaque. Using dental preparations which contain sodium fluoride, such as toothpastes and mouthwashes, can help to strengthen tooth enamel and prevent tooth decay. Many toothpastes and mouthwashes which are on general sale contain sodium fluoride. Some fluoride-containing dental preparations can also be prescribed by doctors and dentists.
In areas of the country where the fluoride content of drinking water is particularly low, fluoride tablets or drops can be prescribed as a supplement for children over 6 months of age. However, the topical action of fluoride on tooth enamel is considered more effective than when it is ingested.
How to take/use fluoride preparations
Before you start the treatment, read the manufacturer's printed information leaflet from the pack. It will provide more information about the preparation and how to use it. The doses below are the usual recommended amounts and are provided to act as a guide only. Your doctor or dentist will tell you what dose is correct for you or your child - you should follow the directions you are given.
If your child is taking fluoride tablets
There are different strengths of tablet for different age groups of children.
The usual dose is one tablet daily, preferably taken in the evening.
The tablet should be sucked or allowed to dissolve in the mouth.
If your child is taking fluoride drops
The usual daily dose for children aged between 6 months and 3 years is seven drops.
Count out the drops on to a spoon, or into your child's drink or food. (Não confiar give the drops directly from the bottle into your child's mouth.)
Give the drops at a different time of day to when the teeth are brushed.
If your child is using a fluoride mouthwash
Read the directions on the label carefully. Some mouth rinses are intended to be used daily, and others are to be used weekly. Also, some rinses are supplied as drops which must be diluted with water before they are used.
Your child should rinse the mouthwash around their mouth for one minute and then spit it out.
After using the mouthwash, do not give your child anything to eat or drink for about 15 minutes.
If you or your child are using a fluoride toothpaste
The toothpaste comes in different strengths;
'1000 ppm' is suitable for babies and children aged 0 to 3 years.
'1450 ppm' is suitable for children over the age of 4 years.
'2800 ppm' is suitable for adults and for children over the age of 10 years.
'5000 ppm' is suitable for adults and for children over the age of 16 years.
Brush your teeth with the toothpaste for the amount of time specified on the packaging before spitting it out. The directions on the pack will tell you how often to use the toothpaste - it will be either two or three times a day.
It is recommended that you use the toothpaste to brush your teeth after meals, and that you do not drink anything or use a mouth rinse for at least 30 minutes afterwards.
Maximizando os benefícios do tratamento
It is important to get into a regular habit of good oral hygiene. In particular, brush teeth regularly, at least twice a day. Teach your children good oral hygiene as young as possible.
Have regular dental checks at intervals recommended by your dentist. Your dentist can also advise about special coatings for your child's teeth to help prevent tooth decay.
Can fluorides cause problems?
Using a fluoride dental preparation is unlikely to cause any problems when used as directed. On occasion, white flecks may appear on the teeth even when recommended amounts of products are used. Rarely, yellowish-brown tooth discoloration can appear if more than the recommended amounts are used. Speak with your doctor or dentist if you are concerned about either of these.
How to store fluoride preparations
Mantenha todos os medicamentos fora do alcance e da vista das crianças.
Armazene em local fresco e seco, longe de calor e luz diretos.
Informações importantes sobre todos os medicamentos
Informações importantes sobre todos os medicamentos
Nunca tome mais do que a dose prescrita. Se suspeitar que você ou outra pessoa possa ter tomado uma overdose, vá ao departamento de emergência do hospital local. Leve o recipiente com você, mesmo que esteja vazio.
Se você for se submeter a uma operação ou a qualquer tratamento dentário, informe à pessoa que está realizando o tratamento quais medicamentos você está tomando.
Este medicamento é para você. Nunca o dê a outras pessoas, mesmo que a condição delas pareça ser a mesma que a sua.
Não guarde medicamentos vencidos ou indesejados. Leve-os à sua farmácia local, que se encarregará de descartá-los para você.
Se você tiver alguma dúvida sobre este medicamento, pergunte ao seu farmacêutico.
MHRA - Relatando reações adversas
Relate efeitos colaterais suspeitos de medicamentos, vacinas, cigarros eletrônicos, incidentes com dispositivos médicos, produtos defeituosos ou falsificados (falsos) à Agência Reguladora de Medicamentos e Produtos de Saúde para garantir o uso seguro e eficaz.

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Perguntas frequentes
What is the difference between fluoride preparations available over-the-counter and those prescribed by a doctor or dentist?
Many toothpastes and mouthwashes containing sodium fluoride are available for general sale. Additionally, some fluoride-containing dental preparations can be specifically prescribed by doctors and dentists, often in areas where the natural fluoride content in drinking water is very low.
How do fluoride tablets or drops work in comparison to fluoride applied topically?
Fluoride tablets or drops are primarily prescribed as a supplement for children in areas with low fluoride water content. However, the article notes that the direct contact of fluoride on tooth enamel (topical action) is considered more effective than when fluoride is ingested.
Are there specific instructions for administering fluoride drops to children to ensure safety?
Yes, when giving fluoride drops, you should count them carefully onto a spoon or into your child's drink or food. It is important not to dispense the drops directly from the bottle into your child's mouth.
Are there any immediate restrictions after a child uses a fluoride mouthwash?
After your child uses a fluoride mouthwash, they should not be given anything to eat or drink for approximately 15 minutes.
When is the best time to brush with fluoride toothpaste for maximum effectiveness?
It is recommended to brush your teeth with fluoride toothpaste after meals. After brushing, you should avoid drinking anything or using a mouth rinse for at least 30 minutes to allow the fluoride to work effectively.
What should I do if I notice white flecks on my or my child's teeth after using fluoride products?
White flecks can occasionally appear on teeth even when fluoride products are used as recommended. If you are concerned about these, it is advisable to speak with your doctor or dentist.
Leitura adicional e referências
- Manufacturer's PIL, Fluoride 5000 ppm Toothpaste; Morningside Healthcare Ltd, The electronic Medicines Compendium. Dated October 2020.
- Manufacturer's PIL, Fluoride 2800 ppm Toothpaste; Morningside Healthcare Ltd, The electronic Medicines Compendium. Dated October 2020.
Sobre o autorVer biografia completa

Michael Stewart, MRPharmS
Gerente de Revisão de Folhetos de Medicamentos – Contratado, Farmacêutico
BPharm (Hons), MRPharmS
Michael é um farmacêutico comunitário atuando nas Midlands e em South Yorkshire, com mais de 20 anos de experiência em aconselhamento sobre medicamentos e condições médicas. Ele tem uma sólida formação em treinamento em saúde, tendo produzido e ministrado cursos de treinamento para equipes de farmácia e funcionários de ambientes de cuidados residenciais, incluindo enfermeiros. Ele também contribuiu para conselhos consultivos de farmácia para o manejo de condições de baixa gravidade na comunidade.
Sobre o revisor

Sid Dajani
Sultan Dajani se formou na Escola de Farmácia de Londres em 1994 e se tornou o membro mais jovem eleito para o conselho da Sociedade Real de Farmácia desde sua fundação em 1842.
Histórico do artigo
As informações nesta página são escritas e revisadas por clínicos qualificados.
Artigo também disponível em Inglês, Alemão, Espanhol, Francês, Italiano, Português, Hindi, Hebraico, Árabe, e Sueco.
Próxima revisão prevista: 18 Dez 2027
19 Jun 2023 | Última versão

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