Applied Sciences,
Journal Year:
2024,
Volume and Issue:
15(1), P. 171 - 171
Published: Dec. 28, 2024
Background:
3D-printed
(3DP)
resins
for
permanent
restorations
are
increasing
in
availability
and
gaining
popularity.
Aesthetic
stability
is
an
issue
of
dental
that
may
compromise
the
long-term
success
restorations.
A
staining
test
has
been
performed
to
evaluate
gloss,
roughness,
color
a
3DP
resin,
effects
repolishing.
Methods:
Squared
specimens
one
resin
(Crown
permanent,
Formlabs)
have
CAD-designed
3D-printed.
After
measurements,
they
were
immersed
coffee
bath
at
44
°C
24
h
then
measured
again.
Subsequently,
repolished
with
three
different
systems:
prophy
cup
Nupro
paste,
HiLuster
Plus
2-step,
Opti1Step
Polisher
1-step
polishing
systems.
Results:
Gloss
Roughness
not
significantly
affected
by
procedure.
No
significant
changes
observed
gloss
after
repolishing,
while
tested
systems
(prophy
paste)
produced
worsening
effect
on
roughness.
Color
was
b*
almost
completely
recovered,
L*
recovered
only
partially.
Conclusions:
still
represents
challenge,
use
affected.
Repolishing
should
be
further
developed
tested.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
Abstract
Background
The
development
of
composite
resin
materials
that
can
be
used
with
additive
manufacturing
techniques
has
contributed
to
the
widespread
use
3D
printers
for
producing
implant-supported
permanent
crowns.
number
studies
evaluating
surface
roughness
and
fracture
resistance
these
is
limited.
This
study
aims
evaluate
features
crowns
produced
by
using
an
experimental
setup
as
close
clinical
conditions
possible,
compare
results
those
subtractive
methods.
Crowns
in
three
different
thicknesses
were
determine
optimal
wall
applicable
practice.
Methods
In
this
vitro
study,
two
resins
one
hybrid
ceramic
used.
A
total
180
crowns,
(1.0,
1.5,
2.0
mm),
cemented
onto
titanium
abutments.
Half
designated
experimental,
whereas
other
half
served
control
groups
(n
=
10
each
material
thickness
group).
samples
group
subjected
thermal
aging
simulate
year
aging.
Surface
measurements
taken
a
profilometer,
universal
testing
machine
was
employed
assess
resistance.
Two-way
ANOVA
means,
Duncan’s
post-hoc
test
comparative
evaluation
subgroups,
t-test
before
after
Results
Compared
technique,
via
technique
presented
lower
values.
Thermal
did
not
significantly
affect
parameters
across
all
(p
>
0.05).
There
no
difference
between
at
1.0
mm
0.05),
1.5
greater
than
<
0.01).
Conclusions
It
concluded
meet
requirements
regarding
Journal of Advanced Oral Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 1, 2025
This
narrative
review
explores
the
evolution
of
occlusal
splint
fabrication,
focusing
on
transition
from
traditional
analog
methods
to
modern
digital
workflows,
incorporating
scanning
and
3D-printing
technologies.
It
examines
advantages
3D
printing,
including
accuracy,
efficiency,
patient
comfort.
The
also
materials
techniques
involved
in
splints,
conventional
acrylic
splints
alginate
impressions
more
advanced
computer-aided
design
(CAD)/computer-aided
manufacturing
(CAM)
systems.
available
literature
demonstrates
that
printing
accelerates
production
offering
greater
customization
while
reducing
material
waste.
However,
challenges
remain
concerning
strength,
biocompatibility,
durability
3D-printed
oral
environment.
While
milled
are
known
for
their
superior
strength
longevity,
provide
increased
flexibility
faster
turnaround
times,
with
orientation
playing
a
crucial
role
fit
accuracy.
In
conclusion,
significantly
enhances
procedure
creating
notable
improvements
over
methods.
Nevertheless,
further
research
is
necessary
optimize
performance
address
concerns
match
longevity
splints.
Journal of Medicine and Life,
Journal Year:
2025,
Volume and Issue:
18(1), P. 29 - 37
Published: Jan. 1, 2025
This
study
compared
the
biomechanical
behavior
of
three
widely
used
dental
materials-zirconia,
lithium
disilicate
(IPS
e.max
CAD),
and
3D-printed
composite
(VarseoSmile
CrownPlus)-
for
maxillary
anterior
bridge
restorations.
Finite
element
analysis
(FEA)
was
employed
to
evaluate
mechanical
response
these
materials
under
normal
occlusal
forces,
replicating
real
clinical
conditions.
Key
factors
analyzed
included
stress
distribution,
deformation,
potential
failure
high
loads.
For
each
material,
material
constants
such
as
Poisson's
ratio
Young's
modulus
were
in
simulations,
with
values
chosen
from
validated
literature
sources.
The
findings
demonstrated
that
zirconia
exhibited
superior
strength
uniform
making
it
an
ideal
posterior
restorations
subjected
stresses.
Lithium
showed
balanced
distribution
proved
be
a
versatile
suitable
both
moderate-load
restorations,
its
aesthetic
properties
attractive
option
areas.
On
other
hand,
found
have
higher
concentrations,
particularly
regions,
lower
elasticity
materials,
limiting
their
use
permanent
but
them
temporary
or
areas
demands.
provides
valuable
insights
into
selection
different
scenarios,
emphasizing
importance
FEA
optimizing
choice
restoration
design.
results
suggest
while
is
long-term
durability,
remains
preferred
requirements,
composites
serving
promising
alternative
applications.
Journal of Esthetic and Restorative Dentistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
To
investigate
the
effect
of
cement
shade
and
printing
parameters
on
optical
properties
additively
manufactured
(AM)
permanent
crown
materials.
Two
AM
materials
(Bego
VarseoSmile
Crown
Plus
Formlabs
Permanent
Crown)
one
conventional
milled
material
were
tested
(n
=
560).
Dimensions
for
each
specimen
measured
10
×
mm
categorized
by
thickness
(1
2
mm).
(3D-printed)
at
three
orientations:
0°,
45°
90°.
Specimens
cemented
with
four
shades
dual-cure
cement:
light,
neutral,
warm,
translucent.
Color
change
(ΔE)
translucency
parameter
(TP)
measurements
calculated
utilizing
a
spectrophotometer,
VITA
EasyShade
V.
Data
was
analyzed
two-
way
ANOVA
Tukey's
post
hoc
tests.
Neutral
exhibited
lowest
ΔE
overall
(2.30
±
0.43).
Translucent
least
color
difference
between
Milled
generally
higher
(5.57
0.26-7.17
0.33)
than
Material
significantly
affected
across
all
(p
<
0.05).
print
orientation
thick
specimens
greatest
clinically
acceptable
ΔE.
Cement
may
cause
unacceptable
changes
based
choice
3D-printing
parameters.
Clinicians
providing
crowns
must
consider
impact
aesthetic
outcomes.
BMC Oral Health,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: April 15, 2025
Abstract
Background
Controversial
properties
and
performance
of
commercially
available
3D-printed
resin
composite
for
permanent
restorations.
So,
the
purpose
this
study
was
to
assess
flexural
strength,
microhardness,
wear,
color
stability
versus
milled
nanohybrid
composites
restoration.
Methods
A
total
70
samples
were
used;
38
bar-shaped
(14
mm
⋅
2
mm)
32
disc-shaped
(10
Tetric
CAD
™
blocks
(TC)
Flexcera
Smile
Ultra
plus
(FSU)
fabricated
(
n
=
35).
Flexural
tested
using
3-point
bending
test.
The
Vickers
test
used
microhardness
evaluation.
Volumetric
wear
analysis
changes
assessed
after
simulated
aging
via
Geomagic
Control
X
software
a
Vita
Easyshade
spectrophotometer,
respectively.
Color
calculated
CIEDE2000
formula.
paired
t-test
dependent
variable
analysis,
Mann‒Whitney
U
independent
variables
(α
0.05).
Results
TC
resulted
in
significantly
higher
strength
(247.7
±
29.1
MPa)
(94.6
3
gf/um
)
than
did
FSU
(97.2
10.2
MPa
31
4.6
2,
respectively)
P
<
0.0001).
Compared
with
(–36.3
),
lower
rates
(–17.6
)(
had
ΔE00
value
2.4
0.5,
whereas
2.1
0.7
0.532),
no
significant
difference
between
groups,
but
both
values
above
acceptability
limit
(1.8).
Conclusions
composites,
have
better
properties.
Clinical
relevance
Milled
exhibit
superior
resistance,
making
them
potentially
more
durable
clinical
dental
restorations
compared
composites.
BMC Oral Health,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: April 15, 2025
The
quality
of
marginal
and
internal
adaptation
plays
a
crucial
role
in
the
clinical
longevity
pediatric
crowns.
This
study
aimed
to
evaluate
effect
restoration
type
(3D-printed,
milled,
prefabricated)
on
absolute
discrepancy
(AMD)
values
crowns
for
primary
molar
teeth.
Three
groups
were
created:
3D-printed
resin,
milled
resin-matrix
ceramic,
prefabricated
zirconia
(n
=
10
per
group).
A
typodont
tooth
was
prepared
according
guidelines
scanned
design
restorations.
fabricated
from
same
design.
All
cemented
standardized
resin
dies
with
self-adhesive
cement.
Marginal
AMD
evaluated
using
micro-computed
tomography
(micro-CT)
at
multiple
measurement
points.
Data
analyzed
one-way
analysis
variance
(ANOVA)
Tukey
HSD
tests,
statistical
significance
set
P
<
0.05.
significantly
influenced
gap
(P
0.05).
crown
group
exhibited
highest
(233.5
±
33.4
μm)
(538.6
47.4
μm).
showed
value
(299.5
70.2
demonstrated
lowest
values,
which
remained
within
clinically
acceptable
limits.
Prefabricated
displayed
gaps,
whereas
most
favorable
Given
their
superior
adaptation,
CAD-CAM-produced
restorations
may
be
recommendable
alternative
patients.
BMC Oral Health,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: May 14, 2025
The
polymerization
extent
of
resin
cement
used
for
bonding
indirect
restorations
is
contingent
upon
the
light
transmittance
restoration
materials
and
intensity
employed
device.
temperature
increase
during
these
cements
via
a
critical
factor
in
preserving
pulp
health.
present
study
aimed
to
assess
optical
properties
different
thicknesses
restorative
such
as
feldspathic
ceramics
[Vitablocs
Mark
II,
(VBM)],
composites
[Gradia,
(GRA)]
3D
printing
resins
[VarseoSmile
Crown
Plus,
(VSC)]
rise
on
undersurface
LED
application.
irradiance
loss,
absorbance,
absorbance
coefficient
values
three
(VBM,
GRA,
VSC)
with
four
(0.5,
1.0,
1.5,
2.0
mm)
were
analyzed.
A
Valo
Cordless
(Ultradent,
USA)
device
was
source.
Light
measured
using
radiometer,
averages
recorded.
variation
(Δt)
recorded
K-type
thermocouple
Data
statistically
analyzed
at
significance
level
0.05.
It
revealed
that
loss
absorption
increased,
decreased
thickness
material
groups.
VBM
GRA
comparable
across
all
thicknesses.
value
VSC
group
distinct
from
thicknesses,
except
0.5
mm
(p
<
0.05).
assessment
groups
regarding
differential
diminished
more
thickness,
although
no
significant
difference
seen
between
>
escalated
greater
particularly
group.
efficacy
light-polymerized
may
be
negatively
impacted;
therefore,
it
advisable
prolong
curing
duration
thicker
materials.
Moreover,
grows,
thermal
exposure
diminishes,
resulting
reduced
danger
Journal of Prosthetic Dentistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 1, 2025
Little
is
known
about
factors
influencing
the
bond
strength
of
additively
manufactured
materials
in
dentistry.
The
impact
diverse
pretreatment
strategies
on
3-dimensionally
(3D)
printed
composite
resins
indicated
for
definitive
cementation
to
dentin
has
scarcely
been
investigated.
aim
this
study
was
evaluate
adhesive
two
3D
fixed
restoration
by
using
different
protocols.
Composite
resin
rods
(2×2×10
mm,
n=20/group)
were
with
3Delta
Crown
and
saremco
print
CROWNTEC.
Half
airborne-particle
abraded
(APA),
other
half
untreated.
All
chemically
conditioned
1
3
adhesives
(Adhese
Universal,
Heliobond,
Monobond
Plus).
Dentin
(2×2×5
mm)
cut
from
bovine
teeth,
pretreated
Adhese
bonded
Variolink
Esthetic
LC.
specimens
thermocycled
(10
000
cycles)
before
testing
tensile
(TBS)
assessment
failure
mode.
Surface
roughness
(SR)
degree
conversion
(DC)
examined
laser
scanning
microscopy
Raman
spectroscopy.
Data
statistically
analyzed
1-,
2-,
3-way
analyses
variance
(ANOVAs)
Weibull
analysis
(α=.05).
TBS
values
ranged
6.57
10.58
MPa,
without
significant
differences
among
groups
(P>.05).
demonstrated
a
comparable
modulus
predominant
failure.
SR
increased
significantly
(P<.05)
upon
APA,
DC
70.1%
71.9%.
Regardless
printable
material,
around
70%.
Different
mechanical
chemical
pretreatments
appear
exert
relatively
little
influence
TBS.
