Setting Time refers to the amount of time that a liquid material needs to solidify.
In dental medicine, setting time plays an important role, especially when it comes to casting materials. In the case of dental impression materials, the pressure that needs to be applied while taking an impression can usually be lifted once the setting time has elapsed. Most dental materials shrink during hardening, because of which they are particularly sensitive to faults. Dimensional errors may result if the impression material is removed from the patient‘s oral cavity too early or if the dental technician pours the impression in plaster too late, consequently leading to the fabrication and placement of leaking crowns in the patient’s oral cavity. Secondary caries and/or bleeding/receding gums are the end result.
Therefore, dentists or dental technicians always adhere to the setting time specified by the manufacturer of the material by using a stopwatch during manipulation and impression taking. Note that apart from setting time, other factors play a crucial role in the fabrication of a good dental prosthesis. Most materials comprise two components that are mixed directly before processing and then begin to harden. In the past, self-mixing materials were used, but currently, dentists use precast cartridges in which materials are mixed according to strict guidelines (here you see such an application tip). This technique will provide the best results. Video about setting time!Setting Time in Dentistry