Dentsply Sirona. has filed a patent for a method to cure polymeric dental appliances using a curing apparatus with controllable heating and LED light sources. The process involves preheating the appliance to a specific temperature before light curing to achieve a final cured state efficiently. GlobalData’s report on Dentsply Sirona gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Dentsply Sirona, AI-assisted medical imaging was a key innovation area identified from patents. Dentsply Sirona's grant share as of January 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
A newly filed patent (Publication Number: US20230390040A1) outlines a method for curing polymeric dental appliances with partially cured photopolymerizable components. The method involves placing the appliance in a curing chamber equipped with controllable heating sources and LED light sources emitting ultraviolet and/or visible light. The process includes preheating the appliance to a specific temperature, followed by a curing step where the appliance is maintained at a certain temperature while being exposed to LED light for a specified duration. This results in the conversion of partially cured components to a final cured state, forming a fully cured polymeric dental appliance. The patent also details the specific temperature ranges, time periods, and LED light emission peaks required for optimal curing.
Furthermore, the patent covers variations of the method, including the application of liquid photopolymerizable compositions to the appliance before curing, with specific compositions such as tooth bonding or sealant compositions mentioned. The tack curing step involves exposing the liquid composition to LED light for a short period to partially cure it before the preheating and curing steps. The patent emphasizes the importance of using LED light within specific wavelength ranges to activate photoinitiators in the compositions effectively. Overall, the method aims to provide a comprehensive and efficient process for curing polymeric dental appliances, ensuring the final product meets the desired standards for clinical use.
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