Deformation behaviour of hybrid composite-ceramic cad/cam materials in comparison with behaviour of the tooth dentine and enamel under compression and stretching
The mechanical properties of hybrid composite-ceramic CAD/CAM materials are compared with properties of intact tooth hard tissues at monoaxial compression and stretching in this article. The conducted research demonstrated that hybrid composite-ceramic materials for CAD/CAM-restorations Vita Enamic (VITA Zahnfabrik, Germany) and Lava Ultimate (3M ESPE, the USA) can be characterized as fragile solid materials which are capable to high level bending deformation, but not to plastic deformation as a dentine. Lava Ultimate is closer to a dentine in the mechanical properties, and Vita Enamic is closer to an enamel in rigidity. In general, these materials are capable to replace functionally and esthetically intact teeth at the reasonable choice of clinical indications for using.