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Flashcards in IST and SDF Deck (14)
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1
Q

what is ist

A
  • interim stabilization therapy
  • the materials usually employed are zinc-oxide eugenol, glass ionomer or other medicated/non-medicated temporary cements
2
Q

when should you use ist

A
  • access to a permanent restoration is not immediate or practical
  • there is a reasonable risk of further damage to the tooth structure
  • the pulp is not exposed
  • the client is in discomfort or is experiencing difficulty in eating
  • the discomfort is due to recent trauma, fracture or lost dental restoration
  • the client has not received any medical/dental advice that would contraindicated placing a temporary restoration
3
Q

what is consent and record keeping

A
  • the client consents to the treatment and it is in the client’s best interest to proceed ->
  • the client record must indicated the tooth restored, the material used and the notification to the client that the restoration is temporary ->
  • the referral to a dds must be noted
4
Q

what is sdf

A
  • silver diamine fluoride
  • in 2017 canada approved the use of silver diamine fluoride as a preventative measure for stopping caries
  • it has been used in Europe and Asia for up to 80 yrs
5
Q

what are the parts of sdf

A
  • silver nitrate: antimicrobial
  • fluoride: hardens enamel
  • ammonia: stabilizer
6
Q

how does sdf work

A
  • it is thought that pdf reacts with hydroxyapatite crystals to form calcium fluoride and silver phosphate
  • it is 2-3x more effective than fluoride varnish
7
Q

what is the ‘zombie effect’

A
  • silver ions bind to bacteria then the dead bacteria are added to the living bacteria thus killing more bacteria
8
Q

what are the pros to sdf

A
  • cheap
  • effective
  • decreases sensitivity
9
Q

what are the cons to sdf

A
  • stains

- may need to be reapplied over time

10
Q

when is it good to use sdf

A
  • clients who are increased risk for caries (sticky pits)
  • root caries
  • to secure leaking margins of posterior restorations
  • to use a liner under restorations
11
Q

what are the procedural steps of sdf

A
  • isolate area
  • dry well
  • dispense 1 drop into happen dish
  • using micro brush, apply sdf to lesion for minimum of 60 seconds
  • remove excess with cotton pellet or roll
  • apply fl varnish to create barrier (not necessary). if no varnish is applied, let dry for 60 secs
  • may need to repeat procedure every 6 months to optimize caries arrest
12
Q

what are risks to sdf

A
  • if silver diamine fluoride comes in contact with skin it will cause a small dark spot that will go away on its ow in 1-2 weeks. if it comes into contact withe existing white fillings it might stain
13
Q

information to tell ptes

A
  • fluoride with silver looks like water but is very powerful and stops cavities that are hard to see. it is painted on the teeth with a tiny brush and can heal early tooth decay
  • it goes on quickly, doesn’t hurt or smell. cavities that are stopped or healed with sdf will turn dark brown or black. teeth without cavities will not change colour. if the colour shows a lot, a dental provider can cover it with white filling material
  • fillings may not be needed for cavities that are healed with silver fluoride, especially in baby teeth because those will be lost anyway when the permanent teeth come in
14
Q

what are some alternatives to sdf

A
  • choose not to have the silver fluoride applied. this could leave harmful bacteria on your teeth and increase the chance of tooth decay
  • another alternative would be to use fluoride toothpaste regularly and have fluoride varnish and sealants applied at the dental office