The effect of different materials and lengths of custom made post and core on the fracture resistance of endodontically treated teeth | ||||
| Ain Shams Dental Journal | ||||
| Volume 37, Issue 1, March 2025, Page 132-140 PDF (521.63 K) | ||||
| Document Type: Original articles | ||||
| DOI: 10.21608/asdj.2024.331181.1601 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Bassant Hassan Ibrahim  1; Marwa Esmat Beleidy2; Amina Mohamed Hamdy3; Hoda Mohamed Abdel Sadek 4
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| 1Fixed prosthodontics department, faculty of dentistry, ain shams university | ||||
| 2Associate Professor, Department of Fixed Prosthodontics, Faculty of Dentistry, October 6 University. Egypt | ||||
| 3Professor, Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University. | ||||
| 4Associate Professor, Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University. | ||||
| Abstract | ||||
| Aim: To investigate the fracture resistance and the mode of failure of custom-made post and cores fabricated with different materials and two post space lengths. Materials and methods: forty-two extracted maxillary central incisors were chosen, and split into 3 groups randomly (n = 14) according to each material: group 1: Hybrid ceramic (Vita Enamic), group 2: Fiber reinforced composite (Trilor) and group 3: polyetheretherketone (Pekton). All groups were subdivided into two subgroups based on post length (6 mm and 9 mm). All teeth were endodontically treated and the post spaces had been scanned by primescan intraoral scanner. The post-and-cores were designed, manufactured using CAD/CAM and cemented using a self-adhesive resin cement (G-CEM). The fracture resistance was tested in a universal testing machine under controlled load at a crosshead speed of 1mm per minute. The failure mode was tested using optical microscope at a x40 magnification. Statistical analysis was performed using two way ANOVA to detect significance between groups. Results: Two-Way ANOVA showed that both post material and length had a significant effect on fracture resistance (p<0.001). Post material and post lengths interactions had no significant impact on the fracture resistance (p=0.160). Conclusion: Trilor custom-made posts had the highest fracture resistance, with the most unfavorable fracture. Nine mm post length had higher fracture resistance than six mm. | ||||
| Keywords | ||||
| Keywords: Custom-made post; Endodontically treated teeth; Polyetheretherketon; Glass fiber reinforced composite; fracture resistance | ||||
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