Effects of scanning technique on <i>in vitro</i> performance of CAD/CAM-fabricated fiber posts

• DOI: 10.2334/josnusd.17-0254
• Publication Date: 2018-06-19T18:25:46Z
• Authors: Nino Tsintsadze; Jelena Juloski; Michele Carrabba; Cecilia Goracci; Alessandro Vichi; Simone Grandini; Marco Ferrari
• Keywords: Dental Stress Analysis; nanoleakage; fiber post; Dental Stress Analysi; Post retention; In Vitro Techniques; CAD/CAM; 03 medical and health sciences; 0302 clinical medicine; Fiber post; CAD/CAM; Cement thickness; Fiber post; Nanoleakage; Post retention; Scanning techniques; Dental Bonding; Dental Leakage; Dental Prosthesis Design; Dental Stress Analysis; Humans; In Vitro Techniques; Computer-Aided Design; Post and Core Technique; Humans; scanning techniques; cement thickness; post retention; Dental Leakage; In Vitro Technique; Scanning technique; Dental Bonding; Dental Prosthesis Design; Computer-Aided Design; Cement thickne; Nanoleakage; Human; Post and Core Technique

The study assessed push0out strength, cement layer thickness and interfacial nanoleakage of luted fiber posts fabricated with CAD0CAM technology following three different scanning techniques: direct the post space (DS); a polyether impression (IS) plaster model (MS).Thirty premolars were randomly assigned to 3 groups according technique.Posts computer0 designed milled from experimental fiber0reinforced composite blocks.The mean standard deviation values strength thickness, respectively, were: DS) 17.12 ± 7.73 MPa 162 24 =m; IS) 10.66 4.56 187 50 MS) 12.03 7.17 258 78 =m.Median scores (interquartile range) 3; (204) 2.5 (204); (204).Fiber DS technique demonstrated superior performance compared upon IS MS, in terms retention.The did not differ between IS, whereas MS group was significantly thicker then other two groups.Scanning influence sealing ability, as all showed comparable nanoleakage.