After milling, the restorations were cleaned in an ultrasonic bath and degreased with ethanol. The luting surface was etched with a 5% hydrofluoric acid (Ceramics Etch; Vita Zahnfabrik, Bad Säckingen, Germany) for 60 s and then rinsed with water for 60 s [40 (
link)]. Silanization (
Monobond Plus; Ivoclar Vivadent, Schaan, Liechtenstein) was performed for 60 s, before a dual-polymerized resin cement (
Panavia V5; Kuraray Noritake Dental Inc., Kurashiki, Japan) was used for adhesive luting. The restorations were seated, and finger pressure was applied. After removing excess material, the luting resin cement was polymerized (
Bluephase G2; Ivoclar Vivadent, Schaan, Liechtenstein) with 1200 mW/cm
2 from the occlusal, buccal, lingual, mesial and distal aspect for 40 s each. The preparation of the RC, PM and HC abutments for adhesive luting was performed as proposed by the manufacturer for each material, as presented in
Table 2. The prepared teeth were cleaned using an occlubrush (KerrHawe SA, Bioggio, Switzerland) followed by application of a self-etching primer (
Panavia V5 Tooth Primer; Kuraray Noritake Dental Inc., Kurashiki, Japan) for 20 s (
Table 2).
Bencun M., Ender A., Wiedemeier D.B, & Mehl A. (2020). Fracture Load of CAD/CAM Feldspathic Crowns Influenced by Abutment Material. Materials, 13(15), 3407.