1. DISCLOSING AGENTS .

2. DISCLOSING AGENTS
A disclosing agent is a preparation in liquid, tablet, or lozenge form that contain a dye or other coloring agent
In dentistry, a disclosing agent is used to identify bacterial plaque deposits for instruction, evaluation and research

5. Bacterial plaque is nearly colorless unless stained by food, beverages or tobacco. After use of a disclosing agent, the soft deposits pick up the colour of the agent where as the dye can be rinsed off readily from plaque-free surfaces

6. PURPOSE of use:
Personalized patient instruction in the location of soft deposits and the techniques for removal
Self-evaluation by the patient on a daily basis
Continuing evaluation of the effectiveness of the instructions for the patient to determine the need for revisions of the plaque control procedures
Preparation of plaque indices
To gain new information about the incidence and formation of deposits on the teeth, effectiveness of specific devices for plaque control, antiplaque agents etc

9. IDEAL PROPERTIES of DISCLOSING AGENT:
1\Intensity of color:
The colour should contrast with normal colors of oral cavity
2\Duration of intensity:
The colour should not rinse off immediately with ordinary rinsing methods
3\Taste:
The patient should not be made uncomfortable by an unpleasant or highly flavored substance
It should be pleasant and encourage co-operation of the patient

10. 4\Irritation to the mucous membrane:
It should produce no irritation or allergic reaction
Because of possibility of allergy, more than one type of disclosing agent should be available for use
5\Diffusibility:
A solution should be thin enough so it can be applied readily to the exposed surfaces of the teeth

11. DISCLOSING AGENTS: Iodine solution preparations
Diluted tincture of iodine
Bismarck brown
Erythrosin
Fast green
Fluorescein

12. METHOD OF APPLICATION:
Dry the teeth with compressed air
Retract cheek or tongue
Use swab or small cotton pellet with cotton pliers to carry the solution to the teeth
Apply solution to the crown of the teeth only
Direct the patient to spread the agent over all surfaces of the teeth with the tongue

13. METHOD OF APPLICATION OF RINSES:
A few drops of a concentrated preparation are placed in a paper cup
Water is added for dilution
Instruct the patient to rinse and swish the solution over all tooth surface
METHOD OF APPLICATION OF TABLET:
The patient chews the tablet
Swishes it around for 30 to 60 seconds
Rinse it completely

14. INSTRUCTIONS TO PATIENTS:
Patient need to be informed about bacterial plaque composition and effect of plaque in the production of gingival and periodontal infections
Patient should be shown about the location and distribution of plaque on lingual surfaces and posterior facial areas
Techniques of daily plaque removal to be instructed to the patients

16. Thank you .