A dental impression is a negative imprint of hard (teeth) and soft tissues in the mouth from which a positive reproduction (cast or model) can be formed. Impression material is of liquid or semi-solid nature when first mixed and placed in the mouth. It then sets to become an elastic solid (usually takes a few minutes depending upon the material), leaving an imprint of person's dentition and surrounding structures of oral cavity. Alginate is an irreversible hydrocolloid. It exists in two phases: either as a viscous liquid, or a solid gel, the transition generated by a chemical reaction. The overall setting double composition reaction is as follows:
Potassium (sodium) alginate + calcium sulphate dihydrate + water → calcium alginate + potassium (sodium) sulphate Sodium phosphate is added as a retarder which preferentially reacts with calcium ions to delay the set of the material.
The market has been estimated at USD 6.2 billion in 2016 and is projected to reach USD 8.5 billion by 2021, at a CAGR of 6.5% during the forecast period from 2016 to 2021. Dental equipment is tools used to diagnose and treat dental diseases. Dental tools are used by dental professionals to examine, manipulate, restore and remove teeth and surrounding oral structures and to provide dental treatment. The end-users for this market include hospitals, dental clinics, and dental practitioners.
The Global Restorative Dentistry Market is projected to Reach USD 21.27 Billion by 2022 from USD 15.60 Billion in 2017, at a CAGR of 6.4% Increase in the prevalence of dental diseases (dental caries and edentulism), rising demand for advanced cosmetic dental procedures, growing dental tourism, and increasing dental expenditure are the major factors driving the demand for restorative dentistry. As a whole any entrepreneur can venture in this project without risk and earn profit.