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)

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

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: 2thLectures@gmail.com

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