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...
Tiny Tweaks Make Big Differences:How Sphere Technology May Revolutionize Composite
Dentistry
Timothy M. Bizga, DDS, FAGD
www.2thLectures.com
ABOUT ME
What matters?
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
1. Excellent handling
2. Durable restorations
3. Fast and easy polishing
4. Simplified shading
Development objectives
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)
How to overcome these contradictions?
– Make large fillers out of small primary particles
Filler technology - overview
Ivoclar-Vivadent
Pre-polymerized
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)
Surface after generalized wear (2500x)
Latta MA (2015)
Tetric EvoCeram
30 µm
Filler technology - overview
3M Espe Ivoclar-Vivadent
Nanocluster Pre-polymerized
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)
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
Surface after generalized wear (2500x)
Latta MA (2015)
30 µm
Filtek Supreme Ultra
Filler technology - overview
*patent applied
Dentsply Sirona 3M Espe Ivoclar-Vivadent
Nanocluster Pre-polymerized*
Submicron Glass Filler (SEM)
SphereTECTM – Spherical pre-polymerized granulated filler
Matthias Hagner
Nanostructure Laboratory
Univ. Konstanz
Filler Technology –
milling balls
agglomerated glass
resin mixture in
solvent
Filler Technology –
Filler Technology –
glass particles coated
with resin
solvent
Filler Technology –
Filler Technology
raw materials dispersion atomization evaporation curing
Filler Morphology
Micro-mechanical interlocking
Bizga!
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%
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
Handling characteristics
• Easy Extrusion
• Low stick
• Exceptional adaptation and handling
• Uncompromised Strength
Leinfelder – Generalized Wear (2500x)
Latta MA (2017)
TPH Spectra ST
Tetric EvoCeram
30 µm
Filtek Supreme Ultra
TPH Spectra
Dr Manuel Pinon & Dr Walter Dias
Indirect onlays on molars
Preparation Indirect onlays Post-operative view
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%
Polishing – composite with large filler particles
Resin matrix
Primary barium
glass particles
filler particles
Resin matrix
Primary barium
glass particles
Polishing –
Finishing and Polishing
da Costa J, Ferracane JL (2017)
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10
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F 20 40 60 80 100 120
Glo
ss
Unit [
GU
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TPH Spectra ST
+ Enhance + Pogo
Filtek Supreme Ultra
+ Sof-Lex (medium-superfine)
polishing time [sec]
Polishing (comparing systems)
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Glo
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Unit [
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finishing time [sec]
TPH Spectra ST
Filtek Supreme Ultra
Tetric Evo Ceram
TPH Spectra
Finishing with Enhance
Amazing gloss
After contouring
After finishing
After polishing
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
Simplified shading
VITA®
– Cloud shades
Chameleon effect
Review of TodayEfficient
Esthetic
Built to
Last
Contact Info
• Dr. Tim Bizga• Like Dr. Tim Bizga on Facebook
• @DrTimBizga
• 2thLectures.com
• Email: [email protected]
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