Abstract: A dental tray with encapsulated fluid that includes an arched tray frame having a bottom surface spanning a tray length separating ends of the tray frame, an outer sidewall spanning the tray length, with an upper edge, and with an inner sidewall surface, an inner sidewall spanning the tray length, with an upper edge, and with an inner sidewall surface. The inner sidewall surfaces of the outer sidewall and the inner sidewall and the bottom surface of the tray frame define a tray channel spanning the tray length and the continuous tray channel has a teeth applicator fluid housed therein. The tray frame also includes a flexible cover selectively removably coupled to the upper edges of the outer and inner sidewalls of the tray frame in a hermetically sealed configuration to encapsulate the teeth applicator fluid.