Aim: To prepare and submit 100 gm of Tooth powder (dentifrices).
Requirements: Calcium carbonate, Hard soap, Sodium saccharin, peppermint oil, Beaker, Glass rod, Measuring cylinder, etc.
Theory: It is the simplest and cheapest form of dentifrices compared to tooth paste. Tooth powder has fewer solubility problems in the formulation because the interaction between components is less in absence of water.
Oxidizing agent and fluorides retain their effective concentration longer in tooth powder than in tooth paste. It contains abrasives such as precipitated chalk i.e. calcium carbonate.
It also contains detergent like hard soap which is necessary to reduce the interfacial tension between adherent matter and the surface of teeth, thereby during cleaning, it helps in penetration and removes matter in the foam produced. They may also contain sodium perborate which acts as a bleaching agent, which is added to improve the whitening action of tooth powder. Artificial sweeteners such as sodium saccharin are used to an extent of 0.05-0.25%. Flavor such as peppermint oil is used which improves the characteristic taste and sensation of freshness in the mouth.
Formula:
| Ingredients | Standard formula |
| Calcium carbonate | 92 gm |
| Hard soap | 5 gm |
| Sodium saccharin | 2 gm |
| Peppermint oil | 1 ml |
Procedure:
- Take the required amount of calcium carbonate. Mix it in a mortar and pestle.
- Now add sodium saccharin to the beaker. Then add sodium lauryl sulfate and mix well.
- Add 2 drops of clove oil or 2 drops of peppermint oil.
- Now the required tooth powder is obtained.
Category: Pharmaceutical aid.
Storage: Store in a well-closed container and keep in a cool place.
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