Table 2.

Procedures for application of used restorative materials according to manufacturer’s recommendation

Material	Workflow
Adhesive
OptiBond FL	1. Etching with 37.5% H3PO4 (30–40 s for enamel, 15–20 s for dentin) 2. Adaptation of matrix (KerrHawe Lucifix® Molar Bands Transparent, KerrHawe SA, Bioggio, CH) 3. Application of Primer for 15 s 4. Evaporating the solvent using oil-free air for at least 5 s 5. Application of adhesive for 15 s 6. Blowing for 3 s 7. Light-cure for 20 s with direct tooth contact (1100 mW/cm2 ± 10%; bluephase (G2), Ivoclar Vivadent AG, Schaan, Liechtenstein)
Xeno V+	1. Adaptation of Matrix (KerrHawe Lucifix® Molar Bands Transparent) 2. Application of self-etch adhesive for 20 s 3. Blowing for min. 5 s 4. Light-cure for 10 s with direct tooth contact (1100 mW/cm2 ± 10%; bluephase)
Composite
SDR	1. Inserting the cap into the dispenser 2. Application of the filling material onto the cavity (layers of 4 mm thickness max.) 3. Light cure from the occlusal, vestibular and oral surface for 20 s each with direct tooth contact (1100 mW/cm2 ± 10%; bluephase) 4. Application of the Premise (nano-filled hybrid composite, reference composite) onto the cavity (layers of 2 mm thickness min.) as an occlusal coverage 5. Light-cure from the occlusal, vestibular and oral surface for 10 s each with direct tooth contact (1100 mW/cm2 ± 10%; bluephase)
x-tra base	1. Inserting the cap into the dispenser 2. Application of the filling material into the cavity at the deepest point (layers of 4 mm thickness max.) 3. Light cure from the occlusal, vestibular and oral surface for 10 s each with direct tooth contact (1100 mW/cm2 ± 10%; bluephase) 4. Application of the Premise (nano-filled hybrid composite, reference composite) onto the cavity (layers of 2 mm thickness min.) as an occlusal coverage 5. Light-cure from the occlusal, vestibular and oral surface for 10 s each with direct tooth contact (1100 mW/cm2 ± 10%; bluephase)
Tetric EvoCeram Bulk Fill	1. Inserting the cavifil into the injector 2. Application of the filling material onto the cavity (layers of 4 mm thickness max.) 3. Build-up with modellation instruments 4. Light-cure from occlusal, vestibular and oral surface for 10 s each with direct tooth contact (1100 mW/cm2 ± 10%; bluephase)
Premise	1. Inserting the unidose into the dispenser 2. Application of the filling material onto the cavity (layers of 2.5 mm thickness max.) 3. Build-up with modellation instruments 4.Light-cure from occlusal, vestibular and oral surface for 10 s each with direct tooth contact (1100 mW/cm2 ± 10%; bluephase)