drg. purwanto-semen kedokteran gigi

8/11/2019 Drg. Purwanto-Semen Kedokteran Gigi

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SEMEN KG


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CEMENTS BASED ON ORGANOMETALLIC

CHELATE COMPOUND

Bbrp semen kg memp. karakteristik in rx setting

divalent metallic ions ( Zn ion) + orthodisubstituted

aromatic compound

chelate compound

Tipe aromatic compound adalah :

1. ZnO / Eugenol cements

2. Ortho-ethoxybenzoic acid (EBA) cements

3. Calcium hydroxide cements , in which the aromatic

liganda are silicate


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Dasar rx : Asam + Basa garam gel

KOMPONNEN UTAMA:

+

Amfoter Asam

/ basa

Proton Proton

Aceptor Donor

SERBUK CAIRAN PASTA KENTAL MASA SOLID/ PADAT


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REAKSI UMUM

MO + H2A MA + H2Oproton proton gel-salt

acceptor donor

MxSiO + H 2A MA + xSiO2 + H2O

Setting tda :

1. Inti (sisa serbuk)

2. Matrik (gel-salt)


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PLIK SI

1. Cavitiy lining

2. Cementing agent

3. Temporary restoration4. Restorastion : Decidui, anterior, posterior

5. Pit : Fissure salent

6. Pulp capping7. Root canal filling materials

8. Periodntal dressing


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Diagram cavity lining protects the dental pulp

VITAL PULP

CAVITY LINING

CHEMICAL

ATTACKTHERMAL

SHOCK

GALVANIC

EFFECT


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SPECIAL APPLICATION

FUNGSI SEMEN

Root canal sealer ZnOE, Zn Polikarboksilat

Gingival tissue pack ZnOE

Surgical dressing ZnOE, ZnOPreparation

Cementation of

orthodontic bands

ZnPO4, Zn Polikarboksilat

Orthodontic bonding Resin akrilik, Resin

komposit


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Syarat ideal

1. Non toksik, non iritan

2. Melindungi pulpa dari material restorasi

- thermal insulation eq. Dibawah amalgam

- proteksi kimiawi dr m. restorasi

- electrical insulation3.Tidak larut in saliva & cairan in mulut.

4. Sifat adesif thd gigi & material restorasi

5. Sifat mekanis ttn6. Sifat optik menyerupai s. optis jar gigi

7. Sifat reologi adonan viskositas rendah lapsemen tipis & wkt kerja cukup


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Sifat karakteristik semen kg

Tebal(m)

Set time

(Mnt)

Compressive

Str (MPa)

Zn Ph (luting) 25 2,5 - 8 70

Zn Polikarboksil (lt) 25 2,5 - 8 70

Zn Ph (base/liner) 25 2,5 6 70

Zn Poli (base/liner) 25 2,5 - 6 70

SIK (Lt ) - 2,5 - 8 70

SIK Base/liner) - 2,5 6 70

SIK restorative - 2,5 8 130


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Dental cements classified

by ingredient and application

I. Water-Bases Cements1. Glass and resin-modified glass ionmer cements

2. Zinc polyacrylate

3. Zinc phosphateII. ResinBases Cements

1. Composites and adhesive resins

2. Compomers

III. Oil

Based Cements

1. Zinc oxide Eugenol

2. Non eugenolzinc oxide


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Glass and resinmodified glass ionomer cements

Class 5 restoration Retention of convensional alloy based

restorations

Retention of alumina or zirconia-bases all-ceramic restorations

Retention of orthodontic bands

High strength bases

Long-term profesional restoration


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Zinc polyacrylate = polikarboksilat

Retention of alloy restoration, orthodontic bands and

pediatric stainless steel crowns

High strength bases

Long term provesional restorations


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- CH2CH CH2CH

C = O C = O

O O

H H

Asam poliakrilat = polikarboksilat


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Zinc phosphate semen

Retention of conventional restorations,orthodontic bands

High strengh bases

Long-term provesional restorations


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Komposisi ZnPO4semen

POWDER Weight (%)

ZnO 90,2

MgO 8,2 SiO2 1,4

Bi2O3 0,1

Misc. BaO, Ba2SO4, CaO 0,1


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LIQUID Weight (%)

H2PO4(free acid) 38,2

H3PO4(combined with Al & Zn) 16,2

Al 2,5

Zn 7,1

H2

O 36


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Serbuk

MgO + ZnO sampai 10 % (-) suhu pemanasan in

proses kalsinasi. Serbuk dibakar in suhu 1000C---1300 C4-8 jam(-) reaktivitasnya

memberikan working/ setting time sesuai dgn semen.

Tanpa proses pembakaran semensetting terlalu cpt

Cairan

Al + Zn

larutan asam ortoposporik.

As. Posporik----------- larutan buffe

(85 %)


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Manipulasi

P/L ratio : 1,4 gm / 0,5 ml

Diaduk diatas glass slab dgn stainless spatula, gerakan

memutar

Lama pencampuran : 1520 dt


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Reaksi setting

Ketika serbuk ZnPO4semen kontak dgn cairan-nya percampuran.

Pada tahap inisiasi terjadilah pembasahan & rx kimia.

Permukaan serbuk alkalin terurai oleh cairan asam

menghasilkan reaksi eksotermis.

3 ZnO + 2 H3PO4+ H 2OZn3(PO4)2. 4 H 2O

Hidratamorphous Zn phospat Isolator termis & me(-) efek galvanik


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Composite and adhesive resins

Bonded conventional alloy-based restoration Bonded ceramic crowns, bridges, veneers, inlays, and

onlays

Bonded laboratory composite crown, bridges, veneers,inlays , and onlays

Bonded posts and cores

Retention of provisional restoratui

Retention of orthodontic brackets


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Compomer

Bonded conventional alloy-basedrestoration

Retention of alumina or zinkonia based all-

ceramic restoration


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Zinc oxide-Eugenol

High strength bases

Provesional restorations

Root canal sealers

Gingival tissue packs

Surgical dressings


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Komposisi ZnO/Eugenol semen

Komponen Fungsi

Powder ZnO Primary reactive ingredient

Zn Acetat

(1-5%)

Accelerator

Liquid Eugenol Primary reactive ingredient

Olive oil

(5-15 %)

To control viscosity


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Komposisi EBA semen

Component Function

Powder ZnO (60%) Primary reactive

ingredient

Quartz (35%) Reinforcing -

Hydrogenated rosin

(5%)

agent

Liquid O-Ethoxybenzoic acid Reactive ingridient

Eugenol


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Ortho-ethoxybenzoic acid

(EBA) cement

CO2H

OC2H5


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EB semen

Ratio asam orthoetoksibensoik : eugenol : 2 : 1

Cavity lining u/amalgam

Luting semen Compressive strength 85 MPa


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Non eugenolzinc oxide

Provesional restorations Root canal sealers

Gingival tissue packs

Surgical dressings


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Calsium hidroxide cements

Tda 2 pasta

Setting time : 2,5 5,5 menit

Reaksi setting : CaOH + ester salisilat Chelate viz. Amorphous

calsium disalicylate


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Etilen glikol salisilat

CH3CH2 CH2 CH

CO2 CO2OH OH


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Komposisi Ca OH semen

Component Function

Paste 1 CaOH 50 % Primary reactive ingridient

ZnO 10 % - ,, -

Zn stearat 0,5 % Accelerator

Ethyl toluene sulphon-

amide 39,5 %

Oil compound, acts as carrier

Paste 2 Glycl salicylate 40 % Primer reactive ingridient

Titanium dioxide Inert, fillers, pigments, radiopa-cifers

Calsium sulphate - ,, -

Callsium tungstate- ,, -


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drg. purwanto-semen kedokteran gigi

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