TY - JOUR 
A1 - Albero Monteagudo, Alberto
AU - Pascual, Agustín
AU - Camps, Isabel
AU - Grau Benítez, María
T1 - Comparative characterization of a novel cad-cam polymer-infiltrated-ceramic-network
Y1 - 2015
SN - 1989-5488
UR - http://hdl.handle.net/11268/8780
AB - Background
The field of dental ceramics for CAD-CAM is enriched with a new innovative material composition having a porous three-dimensional structure of feldspathic ceramic infiltrated with acrylic resins.The aim of this study is to determine the mechanical properties of Polymer-Infiltrated-Ceramic-Network (PICN) and compare its performance with other ceramics and a nano-ceramic resin available for CAD-CAM systems.

Material and Methods
In this study a total of five different materials for CAD-CAM were investigated. A polymer-infiltrated ceramic (Vita Enamic), a nano-ceramic resin (Lava Ultimate), a feldspathic ceramic (Mark II), a lithium disilicate ceramic (IPS-e max CAD) and finally a Leucite based ceramic (Empress - CAD). From CAD-CAM blocks, 120 bars (30 for each material cited above) were cut to measure the flexural strength with a three-point-bending test. Strain at failure, fracture stress and Weibull modulus was calculated. Vickers hardness of each material was also measured.

Results
IPS-EMAX presents mechanical properties significantly better from the other materials studied. Its strain at failure, flexural strength and hardness exhibited significantly higher values in comparison with the others. VITA ENAMIC and LAVA ULTIMATE stand out as the next most resistant materials.

Conclusions
The flexural strength, elastic modulus similar to a tooth as well as having less hardness than ceramics make PICN materials an option to consider as a restorative material.
KW - Odontología
KW - Materiales dentales
KW - Odontología
KW - Tecnología de materiales
LA - eng
ER -