PowerPoint Presentation : USING FLUORIDE IN DENTISTRY Janet Hayes-Hall BDS MMedEd
PowerPoint Presentation : At the end of this lesson the student will be able to Advise patients how to obtain the fluoride level of the water in their area Describe how fluoride reduces dental decay
PowerPoint Presentation : classwork QUIZ
Natural sources of fluoride : Natural sources of fluoride 1 ppm- reduces caries
Natural sources of fluoride : Natural sources of fluoride 1 ppm- reduces caries Find your water quality at home or at the practice or your patients homes http://www.stwater.co.uk/category/48
Fluoride levels : Fluoride levels ppm equivalent to mg/l So 1ppm equivalent to 1mg/litre of water
Fluoride levels : Fluoride levels Recommended fluoride ion intake to reduce caries rate is 0.05 mg/kg of body weight per day from all sources not exceeding1 mg per day. Toxic dose is 5mg/kg of body weight One tube of duraphat toothpaste 5000 contains 225 mg fluoride ion
Artificial sources : Artificial sources Mouthwashes Tablets Toothpaste Varnish
Artificial sources : Artificial sources Mouthwashes Ideally used between toothbrushing to top up fluoride levels
Fluoride and dental caries : Fluoride and dental caries There are three different ways that fluoride can act to reduce decay Ingestion of fluoride whilst the enamel is f orming produces a tooth in which the enamel is more resistant to decay.
Fluoride and dental caries : Fluoride and dental caries In this case the fluoride ion bonds with the tooth enamel to form calcium fluorapatite crystals that are less soluble in the mouth than calcium hydroxyapatite
Fluoride and dental caries : Fluoride and dental caries When teeth are subjected to alternating demineralisation and remineralisation, the presence of low levels of fluoride in the plaque and saliva both encourages remineralisation, and ensures that the enamel crystals that are laid down are of improved quality.
Fluoride and dental caries : Fluoride and dental caries Fluoride reduces the ability of the plaque bacteria to produce acid. Plaque bacteria can concentrate the low levels of fluoride at the tooth surface up to a level that inhibits the function of some enzymes, which are essential to the bacteria’s ability to produce acid.
Fluoride and dental caries : Fluoride and dental caries http://www.bfsweb/org
PowerPoint Presentation : classwork QUIZ