The Effect of two Crystallization Speeds on optical properties of two Lithium Disilicate Ceramics
DOI:
https://doi.org/10.48047/69f1xj13Keywords:
crystallization, translucency, advanced lithium disilicate ceramicAbstract
Objective: to investigate the impact of heat treatment employing two distinct crystallization (firing) rates
on the translucency of various indirect restorative materials.
Materials and methods: A cohort of twenty-eight specimens, each exhibiting a disc-shaped morphology,
was meticulously fabricated utilizing two distinct categories of restorative CAD/CAM materials,
specifically lithium disilicate glass-ceramic (IPS e.max CAD, Ivoclar Vivadent, Liechtenstein) and
advanced lithium disilicate ceramic (Cerec Tessera, Dentsply Sirona, USA). All specimens were
meticulously finished and polished. The samples were divided into two primary groups: 14 specimens
of IPS e.max CAD and 14 specimens of Cerec Tessera. Each primary group was systematically
partitioned into two subsidiary subsets, each consisting of seven disc-shaped specimens, with the
division predicated upon the heat treatment applied. The first subgroup of each material underwent heat
treatment in a Programat CS3 furnace (Ivoclar Vivadent, Zurich, Switzerland), while the second
subgroup was treated in a Cerec Speedfire furnace (Dentsply Sirona).
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