cpdclinicalbiochem.co.ukCPDCLINICALBIOCHEM.CO.UKCPDCLINICALBIOCHEM.CO.UK3008-044410.61336/cpdcb/2024-01-08Patient satisfaction of teeth prepared with vertical versus deep chamfer finish line for monolithic zirconia crowns (Randomized Clinical Trial)Elgohary NoneMaiNabil NoneOmniaTaymour NoneMahaKheiralla NoneLamiaPhD candidate, Division of Fixed Prosthodontics, Faculty of Dentistry, Cairo University, Egypt.Lecturer, Division of Fixed Prosthodontics, Faculty of Dentistry, Cairo University, EgyptAssociate Professor, Division of Fixed Prosthodontics, Faculty of Dentistry, Cairo University, Egypt | Associate Professor at Fixed Prosthodontics Department, Faculty of Dentistry, New Giza University, EgyptProfessor at Fixed Prosthodontics Department, Faculty of Dentistry, Cairo University, EgyptAim: Evaluate the patient satisfaction of monolithic zirconia crowns with vertical preparation technique and compare them to deep chamfer finish line preparation in single crowns restoring posterior teeth. Materials and methods: Fourty full coverage zirconia crowns were fabricated for posterior teeth. The patients were divided into two groups according to the preparation designs. Group1: (control group) horizontal finish line and Group2: (intervention group) vertical finish line. Monolithic zirconia was used for the final restorations. EXOCAD software was used to design the try-in & final restorations which were later produced by five axis milling machine. The cementation was done by using self-adhesive resin cement. Patient satisfaction was assessed immediately after cementation using the “Visual Analogue Scale” VAS. These measurements were repeated after one, three, six, nine, and twelve months respectively. Result: independent t-test was used to compare between the two groups. No statistically significant difference was detected between both groups for patient satisfaction over one year. Conclusion: Both horizontal finish line and vertical finish line revealed successful clinical performance in terms of patient satisfaction for zirconia full coverage restorations.