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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 eugenol- zinc 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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