TUNCELLİ F. B. (Yürütücü), ALTAN B.
Yükseköğretim Kurumları Destekli Proje, 2018 - 2019
Günümüzde protetik diş hekimliğinde estetik beklentilerin artması ve CAD-
CAM teknolojisinde yaşanan gelişmelerle zirkonya içerikli seramik restorasyonların
kullanımı yaygınlaşmaktadır. Bu doktora tez çalışmasının amacı, farklı yüzey işlemleri
uygulanan zirkonya içerikli CAD-CAM blokların reçine simanla olan bağlanma
dayanımının incelenmesidir.
To compare the shear bond strength of resin cement to zirconia‑based
monolithic CAD‑CAM materials subjected to different surface treatments.
2 brands of monolithic zirconia blocks (Vita YZ HT, Sirona inCoris TZI), yttrium‑stabilized tetragonal zirconia (IPS e.max ZirCAD) and zirconia‑reinforced lithium silicate ceramic (Vita Suprinity) were divided into six groups according to the surface treatment received: no treatment (control), HF acid etching, sandblasting, sandblasting + Er:YAG laser irradiation, Er:YAG laser irradiation and CoJet. Composite resin cylinders were bonded to blocks with self‑adhesive resin cement (Theracem). Shear bond strength was evaluated after thermocyling. Failure modes were examined using SEM. Data was analyzed statistically by using 2‑way ANOVA and post‑hoc Tukey’s test (P < 0,05).
The bond strength was significantly affected by the surface treatment and the type of CAD‑CAM blocks (P < 0,001). Surface treatment with CoJet revealed significantly higher bond strength compared to sandblasting in Y‑TZP and monolithic zirconia specimens.
Monolithic zirconia blocks showed
higher bond strength values compared to Y‑TZP zirconia block in sandblasting
and CoJet groups. HF acid etching is more effective than sandblasting and CoJet
for Vita Suprinity.