Download - Glass Ionomer
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Komposisi
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-Partikel glass : diameter < 40μ untuk material restoratif
-Partikel glass : diameter < 40μ untuk material restoratif
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Kegunaan
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Secara umum,dapat digunakan untuk :
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Sifat GIC
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PERBANDINGAN SIFAT KETIGA JENIS GLASS IONOMER
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Conventional Glass-Ionomer
Resin-Modified Glass-Ionomer
Polyacid Glass-Ionomer Resin Composite
VLC (visible light-cured) depth of cure (mm)
NA 2.7 4.7
Water absorption (μg/mm3)
7d 236 - -
180d - 174 26
Radioopacity (mm of Al)
2.5 1.8 3
Fluoride release (μg/cm3)
7d 25.9 21.2 7.8
22d 9.3 8.8 7.8
Flexural modulus (Gpa)
Dry 12.9 9.6 7.6
Wet 5.5 - 7.5
3-pt. flexure strength (Mpa)
Dry 20 68 96
Wet 4 - -
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Type GIC
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KLASIFIKASI ADA NO.8
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Type 1 lutting agent atau lutting cement• Flow dan ketebalannya lebih baik dari pada
semen fosfat• Kelarutan rendah• Lebih kuat• Setting time lebih cepat
• Indikasi : sementasi crown atau sementasi restorasi cor
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Type 2
Glass ionomer filling material ( esthetic filling material )
• Indikasi : – lesi akibat abrasi dan erosi– Karies kelas III dan V – Tidak layak pakai untuk gigi posterior
Reinforced Glass Ionomer ( type II bis reinforced filling material )
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• Semen glass ionomer reinforced dibedakan :• Semen glass ionomer reinforced
menambahkan A203, Ti02, A12Ti05Metal reinforced ionomer cement :• Menambahkan amalgam alloy• Untuk pasak inti• Bahan tambal pada insidensi karies yang tinggi• Tidak tahan abrasi
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Cement ionomer cement• Campuran bubuk gelas + logam ( seperti
porcelain fused to metal Au Ag )• Lebih kuat dan tahan abrasi• Pembentuk inti, pelapis inlay, penutup pit dan
fissure
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Type IIIcavity Liners / Fissure sealant & baseSifat :• Radiopak• Cepat mengeras• Pemakaian mudah Keuntungan :• Kuat• Tahan asam• Dapat menahan tubuli dentin (mengurangi sensitifitas)
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Indikasi :• Dasar tambalan resin komposit posterior• Sebagai pit and fissure sealant• Kontra indikasi :
Karena sifatnya rapuh & tidak tahan tekanan besar, maka kontraindikasi utk:
• preparasi kelas IV, II,VI• Permukaan labial gigi anterior dengan karies yang
luas.
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Modifikasi GIC
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Metal-modified GIC• Ditambahkan metal untuk memperbaiki
kekuatan, fracture toughness, dan resistansi pemakaian
• Kegunaannya untuk restorasi kelas I, biasanya pada pasien muda yang mudah karies
• Warnanya abu-abu karena adanya fase metallic; sehingga tidak dapat digunakan utk gigi anterior
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Resin-modified GIC• Kegunaan : – restorasi kelas I, III, atau V– Basis & lining– Adhesive bracket orthodontic– Penyemenan crown&bridge
• Sifat optis : kurang translusen
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Manipulasi
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