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Tangguh Okta Wibowo
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Gedung Lengkung, Unit 1, Lantai 2, Sayap Timur Sekolah Pascasarjana Universitas Gadjah Mada Jalan Teknika Utara, Pogung, Sleman- Yogyakarta Telp. (0274-564239 extc. 207)
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INDONESIA
Jurnal Teknosains
Published by Universitas Gadjah Mada
ISSN : 20896131     EISSN : 24431311     DOI : https://doi.org/10.22146/teknosains.xxxx
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknosains is a peer-reviewed journal which began publication in 2011, and published each semester in June and December. It is a series of scientific publications in engineering, science and technology area. Jurnal Teknosains aims to encourage research in Science and Technology studies. Topics addressed within the journal include but not limited to: Engineering, which is divided into several topics: Mechanical Engineering, Industrial Engineering, Biomedical Engineering, Chemical Engineering, Nuclear and Physical Engineering, Civil Engineering, and Planology. Basic Sciences, which is divided into: Chemistry and Physics Health Sciences, which is divided into: Medical, Biotechnology specially in Health Science, and Dentistry
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 232 Documents
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Differences in permanent tooth maturation in stunted and normal children aged 6-9 years inToroh district, Grobogan, Central Java Auliya Rahma; Sri Kuswandari; Al Supartinah Santoso
Jurnal Teknosains Vol 15, No 2 (2026): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.113604

Abstract

Stunting is a condition of chronic malnutrition that can affect children's physical growth and cognitive development. Toroh is a district in Grobogan, Central Java, listed among areas with nutritional problems, including stunting. The purpose of this study was to determine the differences in tooth maturation between stunted and non-stunted children aged 6-9 years in Toroh District. An observational, cross-sectional study was conducted on 27 stunted and 27 normal children aged 6-9 years. The nutritional status was assessed based on height-for-age (H/A), using the WHO 2007 growth curve and the Maternal and Child Health (KIA) book. Stunting was assessed when the H/A of the child was less than -2 SD and the KIA book showed a history of the H/A being always under -2 SD; and normal when the H/A was between -2 SD and +2 SD, with a history (KIA book) of no experience of H/A under -2 SD. Permanent tooth maturation was assessed using the Demirjian method on panoramic radiographs. The result was analyzed using an independent t-test at a 95% confidence level. The results indicated that the mean dental maturation score of stunted children in all age groups was significantly lower (p < 0.05) than that of normal children. Girls exhibited a higher mean dental maturation score than boys in both stunted and normal groups. It may be concluded that stunted children had delayed dental maturation compared with normal children in Toroh District, Grobogan Regency, Central Java.
Surface roughness and topography on denture base material fabricated with additive manufacturing techniques Abizar Agung Wibawa; Budi Arifvianto; Rini Dharmastiti; Heribertus Dedy Kusuma Yulianto; Dibyo Pramono
Jurnal Teknosains Vol 15, No 2 (2026): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.116126

Abstract

Denture fabrication plays an important role in restoring oral functions, including mastication, speech, and esthetics, while also helping to prevent temporomandibular joint disorders. Conventional denture bases are commonly fabricated using heat-cured acrylic resin; however, this method still presents several limitations, including longer fabrication time, lower accuracy, and outcomes that are highly dependent on operator performance. The development of additive manufacturing technology offers several advantages, such as high reproducibility, improved accuracy in producing complex geometries, a more efficient digital workflow, and reduced material waste. This study investigated the effect of additive manufacturing using digital light processing (DLP) on the surface roughness and topography of denture bases fabricated with different printing layer thicknesses (50 μm and 100 μm), compared with conventional heat-cured acrylic resin bases. Disc-shaped samples with a diameter of 5 mm and a thickness of 2 mm were analyzed for surface roughness using a profilometer along a 2 mm straight line, while surface topography was observed using scanning electron microscopy (SEM). The results showed significant differences in surface roughness among the groups, where the additive manufacturing group with a 50 μm layer thickness exhibited the smoothest surface (0.96±0.26 μm), followed by the conventional heat-cured group (1.75±0.31 μm), while the additive manufacturing group with a 100 μm layer thickness showed the highest roughness value (4.27±0.55 μm). SEM analysis also revealed crater-like surface defects correlated with variations in layer thickness. These defects were observed more frequently in the additive manufacturing group with a 100 μm layer thickness compared with the 50 μm layer thickness group. These findings confirm the importance of additive manufacturing parameters in determining the final properties of denture bases and indicate the potential for optimizing fabrication techniques to achieve improved denture outcomes.

Page 24 of 24 | Total Record : 232

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