The purpose of this in vitro study to evaluate the effect
of ceramic primer on the bond strength of adhesive resin cement to
zirconia ceramic surface.
Several methods have been introduced to treat inflammatory
gingival enlargement including laser, electrocautery, and surgical
scalpel which is the standard method adopted. Recently, however,
ceramic bur has emerged as a simple and rapid tool for
gingivectomy
The aim of this study was to evaluate and compare gingivectomy
by using ceramic bur and traditional gingivectomy by using
surgical scalpel.
This study aimed to evaluate the fracture resistance of the E
glass Fiber Reinforced Composite when used to repair two different
kinds of dental porcelain.
This research with additives of kaolin is
being carried out in order to improve different types of clay soil. It was
studied the nature and extent of the change on final product.
It was recently noted that there are
serious trials to develop dental materials used in the prosthodontics.
As a result of this development, some veneering ceramic systems
used in metal-ceramic crowns have been appeared. In view of the
major impo
rtance of marginal fit and its role in the success of
restoration it must be a study and evaluation of marginal fit for these
modern systems.
This research aimed to comparasion of marginal fit for metal ceramic
crowns using two types of veneering ceramic.
The goal of all prosthetic treatment is to obtain a satisfying
functional and esthetical oral status. Successful treatment outcome
following prosthetic treatment relies on healthy hard tissues but
also on healthy soft tissues. The aim of this study is to
comparatively assess the clinical and biochemical parameters in
gingival sulcus around the teeth received zerconium ceramic
crowns with supra and sub-gingival crown margin position.
the scientific researches go
towards applying practical and scientific experiments to achieve these goals.
From this point, we try in our research to create strength and increase it for
ceramic tiles at phases with lower temperature degree than what is used in
industry.
The aim of this laboratory study was to evaluate the
internal fit of lithium disilicate glass ceramic laminate veneers
fabricating using heat-pressing technique and cemented using two
types of adhesive resin cement.
Objective: is to study the effect of colored (non-opaque) adhesive resin cement and opaque adhesive resin cement on color matching of full ceramic crowns set on severe discolored abutments.
Materials and Methods: Sample consisted of 15 full cerami
c (IPS e-max press) crowns (A1 Vita Classical Guide) set on severe discolored abutments (ND9) and divided into 3 equal groups (1) left without adhesive (2) adhered with colored Adhesive Resin Cement (3) adhered with opaque Adhesive Resin Cement. The color of these full ceramic crowns was analyzed in the cervical, medium and incisal third using digital color analyzer (Easy Shade Compact); and the values of color change (∆E) were studied and compared with (∆E) of one full ceramic (IPS e-max press) crown (A1 Vita Classical Guide) set on non-discolored abutment (ND1).
Results: showed that White Opaque (WO) Adhesive Resin Cement improved the ∆E values in the full ceramic crowns bonded on severe discolored abutments, were relatively better than the colored cement. However, both kinds of the cements did not reach a color matching level that we can clinically accept.
Co-Cr alloys have excellent corrosion resistance, but in the
ceramic firing process, they are exposed to high temperatures that may affect the alloy corrosion causing ions' release.
We aimed to study the effect of ceramic firing on Co, Cr ions rele
ase from Co-Cr frameworks.
So, 30 Co-Cr models were fabricated and divided randomly into
two equal groups: 1st group: (control), 2nd group: exposed to ceramic firing conditions. Then samples were submerged in artificial saliva for one month, and measurements of released ions were performed using atomic absorption spectrometry.
Concentrations of both cobalt and chromium ions released in
control group (in μg/l) were less than those in 2nd group (without a
statistically significant difference).
We can consider ceramic firing as safe and acceptable process
that slightly increase Co, Cr ions release from Co-Cr frameworks.
