Evolution of Dental Composites PBL

8/17/2019 Evolution of Dental Composites PBL

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Evolution of Dental CompositesPBL 2014


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Timeline

Source: http://portland-or.sites.acs.org/jan/jan.html


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Introduction

• n ultimate goal o! "#$ is to ha%e dimensionall&and chemicall& sta'le material that is a'le to sealthe restoration (ithout an& marginal lea)age*micro or nano+

• ,enerall& composites progressed !rom large

particle sie inorganic !iller particle to smallerparticle sie con!igurations (ith enhanced !illers

• "his resulted in composite resins that aresmoother and stronger and ha%e less

pol&merisation shrin)age


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Classification


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Macrofilled

• iller: #r&stalline uart ground into a !inepo(der particles 1 to 0 microns *3+ in diameter

506 to 706 glass '& (eight 806 to 86 '& %olume.

• Shrin)age: compensated partiall& '& glassparticles Shrin)age still signi!icant microlea)age and

recurrent caries

• Brands: daptic and #oncise


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• d%antage: Large num'ers o! particles can 'e incorporated

into the paste (ithout ma)ing it too sti!! tomanipulate.

• 9isad%antage: ot polisha'le

$estoration sho(s signi!icant (ear o%er time 'ite ma& change teeth (ill mo%e o%er time


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Microfilled

• ;


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• =n!erior to h&'rid composites Lo(er percentage o! !iller content

>igher coe!!icients o! thermal e


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Hybrid• #om'ination o!:

1. the larger particle sie o! the earl& composites

pro%ided strength2. the smaller particles o! the micro!illed composites (hich assisted (ith esthetics and (ear.

• ?suall& !illed 506 to 706 '& (eight (ith 0.04-

3m and 1-3m to -3m !iller particles• #an 'e !illed to a much higher densit& (ith glass

particles than those composites containing onl&micro sied particles


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• d%antages: $etains eas& (or)ing characteristics due to the high

percentage o! larger particle sies

uch more resistant to (ear than the older macros

,ood !or posteriors

• 9isad%antages: 9o not retain a high polish !or long

due to the tendenc& o! the largest particles to pop out o! the

sur!ace

• Brands: Prisma P> >erculite lert and P-0 *'& @-+


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Flowables

• lo(s !reel& o%er the inside sur!ace o! the ca%it&preparation

• ?tilied in a (ide %ariet& o! clinical applications: ranging !rom #lass = === and A restorations to

sealants and pre%enti%e resin restorations *P$$s+

to 'ase/liners to repair o! temporar& restorations• Some 'rands contain l-l-Si glass particles release !luoride to the adjacent tooth structure

• 9eli%ered into a ca%it& using a s&ringe


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• d%antages: Possi'le to !ill small ca%ities on occlusal sur!aces (ithout

anaesthesia

?se!ul in the restoration o! highl& conser%ati%epreparations

=ndicated in areas o! di!!icult access and irregular ca%it&preparations

• 9isad%antages:

more prone to shrin)age and (ear due to the lo( le%el o!!iller particles generall& not used in 'ul) to !ill large→ca%ities

Possess in!erior mechanical properties


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Microhybrid

• aintains the strength o! the h&'rid materials (hile signi!icantl& impro%ing esthetics

• ?ses up to three distinct particle sies !or moree!!icienc& and a much smaller sie range o!larger particles *0.8 -0.5 microns+

• ?ses uni!orml& cut small !iller particles 'et(eenthe larger particles as (ell as resin hardeners

• Brands: Prisma "P> >erculite $A "etric#eram and #harisma


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• d%antages: greater polisha'ilit&

aintains sur!ace polish during prolonged !unction

superior colour optics mechanical properties strong enough !or

re'uilding incisal edges on anterior teeth

• 9isad%antages: su!!er !rom lo(er particle densit& due to the small

sie o! the largest particles in the mi


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Nanofilled

• #onsist o! nanomers * nm to 5 nm particles+and CnanoclusterD agglomerates as the !illers anoclusters are agglomerates *0.8 3m to 1.4 3m+

o! primar& irconia/silica nanoparticles * nm to20 nm in sie+ !used together at points o! contact

•ost common 'rand: ilte)E Supreme Plus


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• d%antages: similar mechanical and ph&sical properties to

those o! microh&'rid composites 'ut per!orm

signi!icantl& 'etter (hen it comes to polish andgloss retention

(ear uite (ell and are suita'le !or restorationson the occlusal sur!aces o! the posterior teeth


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Nanohybrid

• ar)eted as uni%ersal composites

• Prepol&meried !inel& milled agglomeratednanoclusters

• #onsists o!: Larger *su'-micron sied+ glass or silica particles

in the range o! 0.4 micron =ndi%idual nano-sied particles *.0 micron+


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• d%antages: suita'le !or 'oth posterior and anterior

applications *'ecause o! their sur!ace hardness+

high polisha'ilit& their eas e


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Bul fill

• 9esigned to ha%e a deep depth o! cureFrecommended depth: 4 mm.

• $ecent de%elopment o! dramaticall& impro%edmatri< s&stems has since ena'led clinicians to use 'ul)-!ill

s&stems and create e


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• d%antages: !eatures lo( percentage o! pol&meriation

shrin)age

• 9isad%antages: ;sthetic capa'ilit& not so good- onl& a minimum

selection o! shades is a%aila'le


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Conclusion

• #urrentl& the ne( generations o! compositeresins o!!er e


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• =n general the microhybrid and nanofilled composites o!!er an alternati%e to micro!illedcomposites in their a'ilit& to 'e highl&

polisha'le (ith toothli)e translucenc& "his class o! composites (ould 'e considered

uni%ersal-use composite resins.


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!eferences

• http://(((.dentalaegis.com/cced/201@/01/composite-resins-in-201@-an-update-on-their-progre

ss• http://doctorspiller.com/#omposites/t&pesGo! Gcomposites.htm

• http://(((.sso.ch/doc/docGdo(nload.c!mH

uuidIB#5B04;J0@5@JBBJ98B470B292017• http://(((.dentalaegis.com/id/2005/07/direct

-composite-resins
http://www.dentalaegis.com/cced/2013/01/composite-resins-in-2013-an-update-on-their-progresshttp://www.dentalaegis.com/cced/2013/01/composite-resins-in-2013-an-update-on-their-progresshttp://www.dentalaegis.com/cced/2013/01/composite-resins-in-2013-an-update-on-their-progresshttp://doctorspiller.com/Composites/types_of_composites.htmhttp://doctorspiller.com/Composites/types_of_composites.htmhttp://www.sso.ch/doc/doc_download.cfm?uuid=BC57B04E903739FBB9D6BA480B2D2018http://www.sso.ch/doc/doc_download.cfm?uuid=BC57B04E903739FBB9D6BA480B2D2018http://www.dentalaegis.com/id/2007/08/direct-composite-resinshttp://www.dentalaegis.com/id/2007/08/direct-composite-resinshttp://www.dentalaegis.com/id/2007/08/direct-composite-resinshttp://www.dentalaegis.com/id/2007/08/direct-composite-resinshttp://www.sso.ch/doc/doc_download.cfm?uuid=BC57B04E903739FBB9D6BA480B2D2018http://www.sso.ch/doc/doc_download.cfm?uuid=BC57B04E903739FBB9D6BA480B2D2018http://doctorspiller.com/Composites/types_of_composites.htmhttp://doctorspiller.com/Composites/types_of_composites.htmhttp://www.dentalaegis.com/cced/2013/01/composite-resins-in-2013-an-update-on-their-progresshttp://www.dentalaegis.com/cced/2013/01/composite-resins-in-2013-an-update-on-their-progresshttp://www.dentalaegis.com/cced/2013/01/composite-resins-in-2013-an-update-on-their-progress

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Evolution of Dental Composites PBL