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Effect of corncob powder concentration on properties of inlay waxes

Dental Journal (Majalah Kedokteran Gigi) · Vol. 58 No. 3 (2025) · hlm. 242–248

DOI
10.20473/j.djmkg.v58.i3.p242-248
ISSN
2442-9740, 1978-3728
Terbit
2025-05-10
Penerbit
Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-sa/4.0

Abstrak

Background: Corncob powder is a promising filler that needs to be assessed when it is incorporated into inlay waxes to modified its properties. Purpose: This study aims to investigate the effect of different concentrations of corncob powder filler on physical and mechanical properties of inlay waxes. Methods: Five groups of inlay waxes were prepared from paraffin, corncob powder, carnauba wax, and beeswax in varying proportions (w/w%), namely, group I (70:0:25:5), II (65:5:25:5), III (60:10:25: 5), IV (55:15:25:5), and V (50:20:25:5). The wax mixture was heated at 80°C, filtered, added with corncob powder, and stirred until homogeneous then poured into mold for melting point, residue on ignition, flow, hardness, and trimming samples. They were based on ANSI/ADA specification no.122 and ASTM D 1321. The data were analyzed through one-way ANOVA, post-hoc LSD, and Tamhane tests (p = 0.05), except trimming test data. Results: One-way ANOVA revealed that the concentration of corncob filler influenced all inlay waxes properties (p<0.05). LSD and Tamhane post-hoc test, showed significant different among mostly between groups of tests. Addition corncob powder increased the melting point, hardness, and residue of inlay waxes but decreased the flow of inlay waxes. Addition corncob did not influence the trimming property of inlay waxes. Conclusion: The concentration of corncob filler added in inlay wax compositions influenced the melting point, flow, hardness and residue properties but did not influence trimming properties. Inlay wax containing 10% corncob filler potential as a local inlay wax, but further research should be done to overcome the residue on ignition property that higher than standards.

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  • Universitas Gadjah Mada
  • Sumatera Institute of Technology
  • National Research and Innovation Agency
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Rekan penulisOrganisasiArtikel bersama
Juni HandajaniUniversitas Gadjah Mada2
Ema MulyawatiUniversitas Gadjah Mada2
Nuryono NuryonoUniversitas Gadjah Mada2
Alizatul Khairani HasanUniversitas Gadjah Mada2
Sri Kavi SubramaniamUniversitas Gadjah Mada2
Niswati Fathmah RosyidaUniversitas Gadjah Mada1
Pinandi Sri PudyaniUniversitas Gadjah Mada1
Marsetyawan H. N. E. SoesatyoUniversitas Gadjah Mada1
Archadian NuryantiUniversitas Gadjah Mada1
Dewi AgustinaUniversitas Gadjah Mada1
Widya AsmaraUniversitas Gadjah Mada1
Yulita KristantiUniversitas Gadjah Mada1
Marsetyawan HnesUniversitas Gadjah Mada1
Widjijono WidjijonoUniversitas Gadjah Mada1
Purwanto AgustionoUniversitas Gadjah Mada1
Tunjung NugraheniUniversitas Gadjah Mada1
Dyah Anindya WidyasriniUniversitas Gadjah Mada1
Wayan Tunas ArtamaUniversitas Gadjah Mada1
Sri Budi BarunawatiUniversitas Gadjah Mada1
Suparyono SalehUniversitas Gadjah Mada1
Yosi Bayu MurtiUniversitas Gadjah Mada1
Mariyam MariyamSumatera Institute of Technology1
Leny YuliatunNational Research and Innovation Agency1
Ismi KhuzaimahUniversitas Gadjah Mada1

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Sumber metadata: OAI-PMH (metadata jurnal) https://e-journal.unair.ac.id/MKG/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Effect of corncob powder concentration on properties of inlay waxes</dc:title>
	<dc:creator>Irnawati, Dyah</dc:creator>
	<dc:creator>Harsini</dc:creator>
	<dc:creator>Widjijono</dc:creator>
	<dc:creator>Siswomihardjo, Widowati</dc:creator>
	<dc:creator>Sunarintyas, Siti</dc:creator>
	<dc:creator>Yasnawi, Mohammad Imanuddin</dc:creator>
	<dc:creator>Verani, Dhea Maurilla</dc:creator>
	<dc:subject xml:lang="en-US">corncob powder</dc:subject>
	<dc:subject xml:lang="en-US">concentration</dc:subject>
	<dc:subject xml:lang="en-US">inlay wax</dc:subject>
	<dc:subject xml:lang="en-US">mechanical properties</dc:subject>
	<dc:subject xml:lang="en-US">physical properties</dc:subject>
	<dc:description xml:lang="en-US">Background: Corncob powder is a promising filler that needs to be assessed when it is incorporated into inlay waxes to modified its properties. Purpose: This study aims to investigate the effect of different concentrations of corncob powder filler on physical and mechanical properties of inlay waxes. Methods: Five groups of inlay waxes were prepared from paraffin, corncob powder, carnauba wax, and beeswax in varying proportions (w/w%), namely, group I (70:0:25:5), II (65:5:25:5), III (60:10:25: 5), IV (55:15:25:5), and V (50:20:25:5). The wax mixture was heated at 80°C, filtered, added with corncob powder, and stirred until homogeneous then poured into mold for melting point, residue on ignition, flow, hardness, and trimming samples. They were based on ANSI/ADA specification no.122 and ASTM D 1321. The data were analyzed through one-way ANOVA, post-hoc LSD, and Tamhane tests (p = 0.05), except trimming test data. Results: One-way ANOVA revealed that the concentration of corncob filler influenced all inlay waxes properties (p&amp;lt;0.05). LSD and Tamhane post-hoc test, showed significant different among mostly between groups of tests. Addition corncob powder increased the melting point, hardness, and residue of inlay waxes but decreased the flow of inlay waxes. Addition corncob did not influence the trimming property of inlay waxes. Conclusion: The concentration of corncob filler added in inlay wax compositions influenced the melting point, flow, hardness and residue properties but did not influence trimming properties. Inlay wax containing 10% corncob filler potential as a local inlay wax, but further research should be done to overcome the residue on ignition property that higher than standards.</dc:description>
	<dc:publisher xml:lang="en-US">Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en</dc:publisher>
	<dc:date>2025-05-10</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:format>text/xml</dc:format>
	<dc:identifier>https://e-journal.unair.ac.id/MKG/article/view/55097</dc:identifier>
	<dc:identifier>10.20473/j.djmkg.v58.i3.p242-248</dc:identifier>
	<dc:source xml:lang="en-US">Dental Journal (Majalah Kedokteran Gigi); Vol. 58 No. 3 (2025): September; 242-248</dc:source>
	<dc:source>2442-9740</dc:source>
	<dc:source>1978-3728</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://e-journal.unair.ac.id/MKG/article/view/55097/32604</dc:relation>
	<dc:relation>https://e-journal.unair.ac.id/MKG/article/view/55097/39571</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2025 Dental Journal</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>