BALL-ON-THREE-BALLS BIAXIAL FLEXURAL STRENGTH OF BONDED AND UNBONDED CAD/CAM MATERIALS
| Autor: | Nourah Shono, Ahmed Elhejazi, Maawadh Ahmed, Al Nahedh Hend |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Ceramics-Silikáty, Vol 66, Iss 1, Pp 66-77 (2022) |
| Druh dokumentu: | article |
| ISSN: | 0862-5468 1804-5847 |
| DOI: | 10.13168/cs.2022.0001 |
| Popis: | This study aims to compare the biaxial flexural strength of four bonded and unbonded monolithic CAD/CAM restorative materials. Twenty disk-shaped specimens (10 mm in diameter and 2 mm in thickness) were fabricated from four CAD/CAM materials (N = 80): IPS e.max CAD, VITA Suprinity, VITA Enamic, and DD cubeX². The bonded and unbonded disks were subjected to biaxial flexural stress using a universal testing machine, followed by fractographic and scanning electron microscopic analysis of the fractured samples. In the unbonded group, a significant difference in the biaxial flexural strength was observed (P ˂ .0001): DD cubeX² (566.3 MPa) ˃ IPS e.max CAD (410.5 MPa) ˃ VITA Suprinity (330.7 MPa) ˃ VITA Enamic (247.3 MPa). In the bonded group, a statistically significant difference was noted: DD cubeX² (676.5 MPa), VITA Enamic (619.3 MPa), IPS e.max CAD (605 MPa), and VITA Suprinity (544.2 MPa) (P = .009). When cemented, all the CAD/CAM materials showed an increase in the biaxial flexural strength. The bonded VITA Enamic exhibited values comparable to DD cubeX² and significantly higher than IPS e.max CAD and VITA Suprinity. |
| Databáze: | Directory of Open Access Journals |
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