Intrinsic Discolouration in Permanent Anterior Teeth Flashcards
What are the five treatment options for treating intrinsic discolouration in permanent anterior teeth ?
Enamel microabrasion.
Internal and external bleaching.
Resin infiltration technique (ICON).
Localised composite restoration.
Veneers.
What pre-op records should be taken for all discoloured teeth ?
Clinical photos.
Shade.
Baseline sensibility testing.
Diagram of defect.
Radiographs.
Visual analogue scale.
Why are pre-op records taken before treatment of all discoloured teeth ?
Standardisation of recording of aesthetic procedures.
What two techniques are more likely to cause post-op sensitivity ?
Bleaching and microabrasion.
What type of pumice is used in microabrasion ?
Hydrochloric acid.
What % of HCl pumice is used in microabrasion ?
18%
Why do teeth need to be cleaned prior to microabrasion ?
Remove pellicle or plaque.
How should the patient be prepared prior to microabrasion ?
Glasses and bib.
Petroleum jelly to gingivae and lips.
Rubber dam.
What is used to neutralise acid if the HCl is spilled ?
Sodium bicarbonate guard.
What is the maximum amount of applications of HCl pumice which can be carried out ?
10 x 5 second applications.
Why should Duraphat not be used as fluoride varnish post-microabrasion ?
Yellow colour and makes teeth very porous.
What type of fluoride varnish should be applied after microabrasion ?
Profluorid.
Why are sandpaper discs used to polish teeth after microabrasion ?
Changes the optical properties of the enamel so that areas of intrinsic discolouration becomes less perceptible.
So improves the result.
SEM evidence.
What colour of staining does microabrasion work best on ?
Brown discolouration.
What might case permanent incisors to develop brown discolouration ?
Hypomineralisation.
Damage to primary tooth.
