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Dental fluorosis

Authoring team

  • dental fluorosis is a developmental disturbance of enamel which occurs during enamel forming (1)

    • caused by systemic overexposure to fluoride during the first six years of life, when the enamel of the crowns of permanent teeth is formed
      • enamel contains more protein, is porous, opaque and less transparent
      • enamel fluorosis and primary dentin fluorosis can only occur when teeth are forming, and therefore fluoride exposure (as it relates to dental fluorosis) occurs during childhood
        • in the permanent dentition, this would begin with the lower incisors, which complete mineralization at approximately 2-3 years of age, and end after mineralization of the third molars

    • clinical manifestation vary from narrow, white horizontally running lines, larger patches or yellow to light brown colored areas of porous enamel, to (qualitative) loss of enamel in varying degrees

Treatment of dental fluorosis:

  • treatments for fluorotic teeth are limited
    • mildest forms of fluorosis - bleaching may be recommended
    • moderate dental fluorosis include microabrasion, where the outer affected layer of enamel is abraded from the tooth surface in an acidic environment
    • severe fluorosis - options include composite restorations combined with microabrasion or application of aesthetic veneers
      • in some very severe cases - prosthetic crowns may be necessary

Use of fluoride toothpaste in children:

For the optimal effect of fluoride toothpaste, it is important to follow recommended guidelines for the use of products containing fluorides - Recommended use of fluoride toothpaste for children. Source: European Academy of Paediatric Dentistry (EAPD), 2009.

Age

Fluoride concentration

Daily use

Daily amount

6 months-2 years

500 ppm

2x

pea size

2-6 years

1000 ppm

2x

pea size

6 years and over

1450 ppm

2x

1-2 cm

In this way, the probability for fluorosis is decreased and the protective effect of fluoride on the development of caries is significantly important.

Notes:

  • in England, around 10% of the population receives public drinking water served by a fluoridation scheme (4)
    • water fluoridation schemes aim to achieve a level of 1mg of fluoride per litre of water
    • World Health Organization (WHO) guidance recommends a maximum concentration of fluoride in public water supplies of 1.5mg/l, this being protective against any known harmful effect over a lifetime of consumption
      • in the most deprived 20% of areas, the chance of 5 year old children having cavities was 25% lower in areas with a fluoridation scheme than in areas without
      • 5 year olds in areas with higher fluoride concentrations were less likely to experience dental cavities than in areas with low fluoride concentrations
      • up to 56% of hospital admissions for the removal of decayed teeth among children and young people could be prevented in the most deprived areas through water fluoridation scheme

Reference:


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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