Aim: To prepare, evaluate and submit medicated toothpaste.
Requirements: Sieve No. 80 #, Mortar-pestle, Beakers, Water bath, and Collapsible tube.
Chemicals: Calcium carbonate, Dicalcium phosphate dehydrate, Glycerin, Sodium carboxymethyl cellulose, Sodium Lauryl Sulphate, Sodium Saccharin, Potassium nitrate, clove oil, Colour, Flavour, Preservatives, and Purified water.
Formulation Consideration: Potassium nitrate is used as a desensitizer for treating tooth sensitivity to touch, sweets, or hot, cold, or acidic substances. Clove oil is a mild anesthetic that temporarily deadens the nerves of the teeth.
Storage: Store in a cool dry place.
Directions: For dental use only.
Label:
- Name and type of toothpaste (fluoridated/ non-fluoridated).
- Net weight.
- Fluoride ion content in ppm for fluoridated toothpaste.
- Key ingredients of the formulation.
- Best use before.
- Foaming or non-foaming
Formula:
| Sr. No. | Ingredients | Quantity Given % w/w | Quantity Taken |
| 1 | Calcium carbonate (Precipitated chalk) | 15 | |
| 2 | Dicalcium phosphate dihydrate (DCP) | 35 | |
| 3 | Glycerin | 25 | |
| 4 | Sodium carboxymethyl cellulose | 1.5 | |
| 5 | Sodium lauryl sulfate | 2 | |
| 6 | Sodium saccharin | 0.05 | |
| 7 | Potassium nitrate | 5 | |
| 8 | Clove oil | 0.2 ml | |
| 9 | Colour and flavor | q.s | |
| 10 | Preservatives | q.s | |
| 11 | Purified water | qs to 100 gm |
Procedure:
- Sift calcium carbonate and DCP through sieve No. 80 # and triturate the required quantity with sodium saccharin in clean and dry mortar.
- Then add glycerin to the mortar and triturate.
- Prepare the mucilage of Sodium CMC in the dry beaker with a small amount of hot water with preservatives and potassium nitrate dissolved in it. Break lumps if formed.
- Add this mucilage to the above mixture in mortar and continue trituration to get a smooth consistency.
- Then add the required quantity of color, flavor, and clove oil.
- Dissolve the required quantity of SLS in the rest of the required quantity of water in a separate beaker.
- Add SLS solution to the above paste and stir gently to avoid foaming. Weigh and fill in a clean and dry collapsible tube.
Label: For external use only.
Storage: Store in a cool dry place below 30°C.
Packaging: In a collapsible tube of different sizes.
Use: Whitens the teeth, fights cavities, fights tartar build-up, and freshens breath.
Directions: Brush the teeth thoroughly after each meal or at least twice a day with pea size amount of toothpaste.
Precautions: Not to be swallowed. Keep out of reach of children.
Evaluation Test:
| Sr.No. | Test | Observations |
| 1 | Appearance | |
| 2 | Homogeneity | |
| 3 | Stability | |
| 4 | Tube inertness | |
| 5 | Determination of hard and sharp-edged abrasive particles | |
| 6 | Spreadability | |
| 7 | PH | |
| 8 | Foaming power | |
| 9 | Scratch test |
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