![]() Qianqian Pan, Stephen Westland, Tooth color and whitening – digital technologies, Journal of Dentistry 74 (2018) S42-S46. Isaac Mayer., Monica Iliescu., Orit Jacobsohn., Mireille Richard-Plouet., Tamara Niazov., Jacques Werckmann., Olaf Burghaus., and Dirk Reinen, “Manganese in Precipitated Hydroxyapatites”, Eur. de Groat, “Relationship Between the Colour Change of Hydroxyapatite and the Trace Element Manganese”, Biomaterials, 14 (13), 969-972, (1993) Part I: XRD and SEM of Crystalline Phases”, Journal of the European Ceramic Society, 22, 731–736, (2002) Kristanto Wahyudi., Frank Edwin., dan Naili Sofiyaningsih, “Sintesis dan Karakterisasi Bone Ash Sintetik dari Bahan Alam”, Jurnal Keramik dan Gelas Indonesia, 25 (2), 46-58, (2016)Īlpagut kara., and Ron Stevens, “Characterisation of Biscuit Fred Bone China Body Microstructure. Takeo Hattori., Yasuhiko Iwadate., and Tomoyoshi Kato, “Hydrothermal Synthesis of Hydroxyapatite from Calcium Pyrophosphate”, Journal of Materials Science Lettres, 8, 305 306, (1989) Murakami, “Hydrothermal Synthesis of Crystalline Hydroxyapatite Ultrafine Particles”, Chem. Hakimi, “Effect of Hydrolisis on the Phase Evolution of Water-based Sol-gel Hydroxiapatite and Its Application to Bioactive Coatings”, Journal of Materials Science: Material in Medicine, 13, 657-665, (2002)Į. Kamiya, “Preparation of Hydroxyapatite by the Hydrolysis of Brushite”, Journal of Materials Science, 22, 4247-4250, (1987)ĭ.-M Liu., T.Troczinski., and D. Bolen, “Hydroxylapatite Synthesis and Characterization in Dense Polycrystalline Form”, Journal of Materials Science, 11, 2027-2035, (1976) ![]() Masayuki Asada., Yoshinari Miura., and Akiyoshi Osaka, “Hydroxyapatite Crystal Growth on Calcium Hydroxyapatite Ceramics”, Journal of Materials Science, 23, 3202-3205, (1988) and Jose Maria Gonzales-Calbet, “Calcium Phospates as Substitution of Bone Tissues”, Progress in Solid State Chemistry, 32, 1–31, (2004) Kata Kunci: CIELAB, bone ash sintetik, kromatik, kalsinasi, whiteness, brightness Pergeseran indeks whiteness terkecil adalah bone ash B10, ΔW * = 13,20 dan terbesar adalah bone ash B125 ΔW * = 36,29. Pergeseran warna terkecil adalah bone ash kalsinasi 1000 oC, ΔE = 13,37 dan terbesar adalah bone ash kalsinasi 1250 oC, ΔE = 37,75. ![]() Berdasarkan nilai L*, a* dan b* ruang warna bone ash sintetik bergeser dari Hijau Kuning menjadi Hijau Biru dan indeks whiteness bergeser menuju hitam. Derajat whiteness dan brightness mengalami penurunan dengan nilai terbesar pada bone ash kalsinasi 1250 oC, D whiteness = -59,90% dan D brightness = -61,42%. Panjang gelombang bone ash sintetik kalsinasi 492-574nm dan glasir bone ash 477-542nm, berarti termasuk material putih. Masing-masing hasil kalsinasi dijadikan aplikasi glasir ubin pada suhu 1170 oC. Bone ash sintetik dikalsinasi dengan variasi suhu 600 oC – 1250 oC. Pada penelitian ini sifat kromatik bone ash sintetik t elah dipelajari berdasarkan sistem CIELAB.
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