Plaster and dental stone are both types of gypsum materials used in dentistry, but they have some key differences. Both are made from Calcium Sulfate Dihydrate or raw gypsum, but through the process of crushing and heating, dental stone is made from Calcium Sulfate Hemihydrate, which is ready to receive the correct ratio of water for use with gypsum products in dentistry.
Plaster is less refined and has irregular shaped crystals, which have higher water powder ratios of 40-50 milliliters per 100 grams of powder. It is relatively soft and is a great choice for basic procedures where extended durability is not required, such as models that are for one-time use or quick diagnosis. Plaster can also be used for mounting if it has an expansion of .10% or lower. It is mainly used in applications where the case will be dismounted or disposed of and no mounting record is needed.
Dental stone is a more refined gypsum and is characterized by regularly shaped crystals. The water powder ratios for dental stone are 35 milliliters or below, per 100 grams of powder. These more accurate and predictable dental stones are harder and more suitable for procedures like crown and bridge, implants, and orthodontic appliances. Lower expansion versions are also great for mounting, especially for cases that need to be kept long term and not discarded after fabrication.
In summary, plaster is a less refined material with higher water powder ratios and is suitable for basic procedures, while dental stone is a more refined material with lower water powder ratios and is more suitable for advanced procedures and long-term record keeping.
Dentists and dental technicians can find and buy dental Gypsum and Plaster Materials from SOUQ DENTAL in Saudi Arabia. We will ship your order within 24 hours.