Perbandingan setting time dental plaster, gipsum white orthodontic, dan gipsum bangunan (Laporan Penelitian)
Info Katalog
File Repositori
Nomor Panggil : 617.695 DAR p
Penerbit : FKG - Usakti
Kota Terbit : Jakarta
Tahun Terbit : 2020
Pembimbing 1 : drg. Octarina, M.Si.
Subyek : Dental materials
Kata Kunci : construction gypsum, dental plaster, white orthodontic, Initial setting time, Final setting time
Status Posting : Published
Status : Lengkap
File Repositori
| No. | Nama File | Hal. | Link |
|---|---|---|---|
| 1. | 2020_TA_KG_040001600062_Halaman-Judul.pdf | ||
| 2. | 2020_TA_KG_040001600062_Lembar-Pengesahan.pdf | ||
| 3. | 2020_TA_KG_040001600062_Bab-1_Pendahuluan.pdf | 3 | |
| 4. | 2020_TA_KG_040001600062_Bab-2_Tinjauan-Pustaka.pdf | 8 |
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| 5. | 2020_TA_KG_040001600062_Bab-3_Kerangka-Teori,-Kerangka-Konsep,-Hipotesis.pdf |
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| 6. | 2020_TA_KG_040001600062_Bab-4_Metode-Penelitian.pdf | 8 |
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| 7. | 2020_TA_KG_040001600062_Bab-5_Hasil-Penelitian.pdf | 4 |
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| 8. | 2020_TA_KG_040001600062_Bab-6_Pembahasan.pdf | 4 |
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| 9. | 2020_TA_KG_040001600062_Bab-7_Kesimpulan-dan-Saran.pdf | 2 |
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| 10. | 2020_TA_KG_040001600062_Daftar-Pustaka.pdf | ||
| 11. | 2020_TA_KG_040001600062_Lampiran.pdf | 7 |
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L atar belakang: Dental plaster, gipsum white orthodontic dan gipsum bangunanmemiliki bentuk partikel β-hemihidrat. Gipsum kedokteran gigi memilikikarakteristik penting yaitu setting time yang dapat mempengaruhi kekuatan bahan.Tujuan: Membandingkan setting time dental plastser, white orthodontic, dangipsum bangunan. Metode: Penelitian eksperimental laboratoris ini dilakukanpada 3 kelompok sampel gipsum yaitu bangunan(A), dental plaster(B) dan whiteorthodontic(C). Setiap kelompok perlakuan berjumlah 10 sampel. Manipulasigipsum menggunakan perbandingan 120 gram bubuk dan 60 mL air. Pengadukanmenggunakan gypsum mixer dengan kecepatan 120 rpm hingga homogen,kemudian dituang ke cetakan dan dilakukan pengujian setting time menggunakanalat Gillmore needle sesuai standar ASTM C266-03. Alat ini memiliki 2 ukuranjarum dan beban berbeda yang dipenetrasi ke dalam campuran gipsum denganinterval 15 detik. Pengujian initial setting time menggunakan beban 113,4 gram,diameter jarum 2,12 mm. Sedangkan pengujian final setting time menggunakanbeban 453,6 gram, diameter jarum 1,06 mm. Pengujian ini dilakukan berulanghingga jarum tidak dapat penetrasi permukaan sampel. Hasil: Nilai rerata initialsetting time gipsum kelompok A(10.39±1.19) menit, B(16.17±1.40) menit, danC(24.46±1.51) menit. Nilai rerata final setting time gipsum kelompokA(15.97±0.79) menit, B(24.31±0.88) menit, dan C(33.37±0.66) menit. Analisisone way ANOVA, Post Hoc-Tukey menunjukkan perbedaan signifikan initialsetting time dan final setting time antar ketiga kelompok (p < 0.05). Kesimpulan:Terdapat perbedaan setting time antara dental plaster, gipsum white orthodonticdan gipsum bangunan. Setting time gipsum bangunan memenuhi standar ADANo.25 sebagai gipsum kedokteran gigi II.
B ackground: Dental plaster, white orthodontic gypsum and construction gypsumhave β-hemyhidrat particle. Setting time is an important characteristic of dentalgypsum which can affect the strength of material. Objective: Comparing dentalplaster, white orthodontic gypsum, and construction gypsum’s setting time.Materials and methods: Experimental laboratory study divided into 3 groups:construction gypsum(A), dental plaster(B), white orthodontic(C). Each groupconsisted of 10 samples. Gypsum manipulation was using 120 gr powder and 60mL water. The mix was conducted using gypsum mixer with 120 rpm speed. Ahomogeneous mixture was poured into a mold and setting time test was measuredusing Gillmore needle according to ASTM C266-03. This tool has 2 differentneedles diameter and loads. Initial setting time test was measured using 113.4grams and 2.12 mm needle. Final setting time test was measured using 453.6grams and 1.06 mm needle. This test repeated until the needle fail to penetrate thegypsum’s surface. Results: The mean initial setting time for groupA(10.39±1.19), B(16.17±1.40), and C(24.46±1.51). The mean final setting timefor group A(15.97±0.79), B(24.31±0.88) and C(33.37±0.66). One way ANOVAand Post Hoc-Tukey analysis showed significant differences in initial setting timeand final setting time between three groups (p<0.05). Conclusions: There is adifference in setting time between dental plaster, white orthodontic andconstruction gypsum. The construction gypsum’s setting time is suitable as type IIdental gypsum according to ADA No.25.
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