Photopolymerizable and highly transparent gel for the reconstruction of thermoplastic splints with DURAN® that have been reinforced with DURASPLINT® LC. This gel can be used specifically to eliminate air bubbles in occlusal planes made with DURASPLINT® LC and to incorporate a canine guide. Polymerization occurs within a wavelength range of 360-420 nm, e.g., with the LC Mini Light or the LC-6 Light Oven. It is necessary to pre-treat the DURAN® splints with LC-Primer. BLUE-BLOKKER®, 4 x 1.5 g, includes 2 cannulas Ø 0.4 mm and 8 cannulas Ø 0.9 mm.