How to Make False Teeth With Plaster of Paris

Updated April 17, 2017

False teeth are an easy and quick way to change your appearance for Halloween or a theatrical performance. Making a homemade set of false teeth requires special equipment but offers your unlimited freedom to make vampire fangs, misshapen teeth, buckteeth or any other design you wish.

Once you create your plaster mould of your teeth, you can save it and reuse it to make additional sets and styles of false teeth.

Sit upright and place the dental plates on your teeth, biting down gently. Let the alginate harden for 3 minutes.

Carefully remove the plates, wiggling a little if needed to free your teeth from the alginate. The alginate will not completely harden.

Fill the mould with plaster to make a duplicate set of your teeth. Let the plaster harden completely before removing from the alginate (read plaster instructions for specific timing), and use the sculpting tools to remove any imperfections or air bubbles.

Use wax or clay to create your false teeth over the plaster copy of your teeth. Use the carving tools to shape enlarged or misshapen teeth. You usually need to cover the front eight teeth to cover your smile and without glue to hold the finished product in place.

Make a new mould of the false teeth using alginate in a small bowl. Let the new mould sit for 3 minutes.

Fill the new mould with dental acrylics and gently push your existing plaster teeth into the mould. This will create an acrylic version of your false teeth that will fit over your real teeth. Do not use plaster to form your false teeth as this will damage your real teeth.

Use non-toxic paints to colour your teeth as desired. Let the acrylics and paint to dry for more than 45 minutes before use.


Ensure any material used is non-toxic before putting it in your mouth. Ensure you are using materials meant for dental use to protect your teeth from damage.

Things You'll Need

  • Dental impression plate filled with alginate
  • Extra alginate
  • Plaster of Paris
  • Sculpting tools
  • Wax or clay
  • Dental acrylics
  • Non-toxic paint


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About the Author

Alane Michaelson began writing professionally in 2002. Her work has appeared in Michigan publications such as the "Detroit Free Press" and the "Flint Journal." Michaelson graduated from Oakland University in 2006, earning a Bachelor of Arts in journalism.