Timothy M. Bizga, DDS, FAGDd1ue90e5sp4tcv.cloudfront.net/3178/images/Asset308133_v1.pdf · Timothy...
Transcript of Timothy M. Bizga, DDS, FAGDd1ue90e5sp4tcv.cloudfront.net/3178/images/Asset308133_v1.pdf · Timothy...
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Tiny Tweaks Make Big Differences:How Sphere Technology May Revolutionize Composite
Dentistry
Timothy M. Bizga, DDS, FAGD
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www.2thLectures.com
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ABOUT ME
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What matters?
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Composite Resins
• Composed of a resin matrix and fillers
• Fillers (glass, quartz, silica, pre-polymerized resin) help to reduce shrinkage
• Fillers influence material based on size, shape, surface quality, optical index
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1. Excellent handling
2. Durable restorations
3. Fast and easy polishing
4. Simplified shading
Development objectives
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The “Filler” Problem
The smaller the filler…
+ the better the gloss
the lower the filler load (due to increased surface) the weaker the material
the lower the wear resistance (in occlusal contact areas)
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How to overcome these contradictions?
– Make large fillers out of small primary particles
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Filler technology - overview
Ivoclar-Vivadent
Pre-polymerized
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Combination of pre-polymerized macrofiller and submicron glass filler
resin
submicron
glass filler
silanized
submicron-
filler
irregularly
shaped pre-
polymerized
macro-filler
(10-100 µm)
milling resin
resin matrix
curing
Filler Technologies: Tetric EvoCeram(Ivoclar)
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Surface after generalized wear (2500x)
Latta MA (2015)
Tetric EvoCeram
30 µm
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Filler technology - overview
3M Espe Ivoclar-Vivadent
Nanocluster Pre-polymerized
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FS combines “Nanoclusters” with nanofillers
zirconia- and
siliciumdioxide
nanoparticles
(10- 20 nm)
irregularly shaped
„Nanocluster“
(1 - 20 µm)
1. spray-drying
2. calcination
3. milling
Filler Technologies: Filtek SupremeUltra (3M ESPE)
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FS combines “Nanoclusters” with nanofillers .
zirconia- and
siliciumdioxide
nanoparticles
(10- 20 nm)
irregularly shaped
„Nanocluster“
(1 - 20 µm)
1. spray-drying
2. calcination
3. milling
Filler Technologies: Filtek SupremeUltra (3M ESPE)
4. silane
5. resin
+ nanofiller
resin matrix
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Surface after generalized wear (2500x)
Latta MA (2015)
30 µm
Filtek Supreme Ultra
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Filler technology - overview
*patent applied
Dentsply Sirona 3M Espe Ivoclar-Vivadent
Nanocluster Pre-polymerized*
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Submicron Glass Filler (SEM)
SphereTECTM – Spherical pre-polymerized granulated filler
Matthias Hagner
Nanostructure Laboratory
Univ. Konstanz
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Filler Technology –
milling balls
agglomerated glass
resin mixture in
solvent
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Filler Technology –
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Filler Technology –
glass particles coated
with resin
solvent
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Filler Technology –
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Filler Technology
raw materials dispersion atomization evaporation curing
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Filler Morphology
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Micro-mechanical interlocking
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Bizga!
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The role of composites in procedure success
What matters: Handling that enables efficient placement with confidence
74% of dentists complain about handling
properties of composites such as
adaptability and stickiness.
74%
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Low Compule Extrusion Force due to ”Ball-Bearing“-Effect
* out of standardized compule
Composite Extrusion Force*
TPH Spectra ST (HV) 71 N
Filtek Supreme Ultra 76 N
Tetric EvoCeram 148 N
Venus Diamond 175 N
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Handling characteristics
• Easy Extrusion
• Low stick
• Exceptional adaptation and handling
• Uncompromised Strength
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Leinfelder – Generalized Wear (2500x)
Latta MA (2017)
TPH Spectra ST
Tetric EvoCeram
30 µm
Filtek Supreme Ultra
TPH Spectra
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Dr Manuel Pinon & Dr Walter Dias
Indirect onlays on molars
Preparation Indirect onlays Post-operative view
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Common Class II Clinical Considerations
14% of total Class II chair time is spent
finishing and polishing14%
What matters: The finishing system produces a smooth surface efficiently
More than 80% of dentists are satisfied
with the final surface generated by
Enhance in posterior restorations80%
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Polishing – composite with large filler particles
Resin matrix
Primary barium
glass particles
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filler particles
Resin matrix
Primary barium
glass particles
Polishing –
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Finishing and Polishing
da Costa J, Ferracane JL (2017)
0
10
20
30
40
50
60
70
80
F 20 40 60 80 100 120
Glo
ss
Unit [
GU
]
TPH Spectra ST
+ Enhance + Pogo
Filtek Supreme Ultra
+ Sof-Lex (medium-superfine)
polishing time [sec]
Polishing (comparing systems)
0
5
10
15
20
25
30
0 20 40 60 80 100
Glo
ss
Unit [
GU
]
finishing time [sec]
TPH Spectra ST
Filtek Supreme Ultra
Tetric Evo Ceram
TPH Spectra
Finishing with Enhance
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Amazing gloss
After contouring
After finishing
After polishing
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The role of composites in procedure success
Dentists spend up to 28% of Class II chair
time on shade selection and finishing and
polishing
80% of patients are reportedly aware
of color differences between restored
and adjacent natural teeth.
28%
80%
What matters: Simple, accurate shade selection & fast, effective finishing
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Simplified shading
VITA®
– Cloud shades
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Chameleon effect
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Review of TodayEfficient
Esthetic
Built to
Last
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Contact Info
• Dr. Tim Bizga• Like Dr. Tim Bizga on Facebook
• @DrTimBizga
• 2thLectures.com
• Email: [email protected]
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