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All Journal Rekayasa Sipil Dentino: Jurnal Kedokteran Gigi
Shafira Kurnia
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Dentistry

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GINGIVECTOMY AND GINGIVAL DEPIGMENTASION AFTER ORTHODONTIC TREATMENT Yenniy Ismullah; Shafira Kurnia
Dentino : Jurnal Kedokteran Gigi Vol 5, No 2 (2020)
Publisher : FKG Unlam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/dentino.v5i2.8978

Abstract

ABSTRACTBackground : Gingival enlargement, a terminology for an increase in the size of the gingiva, is a general feature of gingival dis­eases. Gingival melanin pigmentation does not present a medical problem, but is likely to generate a concern in aesthetic function. Although melanin pigmentation is not a chief complain, this condition still need to be corrected. Clinicians are often confronted with a challenge in achieving gingival esthetics. Purpose : This case report aims to explain how to achieve esthetical and functional demands in gingival enlargement and gingival hyperpigmentation case with gingivectomy and gingival depigmentation. Case: This surgical procedure aim to retain esthetical and functional demands. Case Management: An 18-years-old male presenting with maxillary chronic inflam­matory gingival enlargement associated with prolonged orth­odontic therapy is reported. Orthodontic appliances are factors for irritation and plaque retention that interfere oral hygiene and regulate gingival inflammation. Surgical therapy was performed to provide a better aesthetic outcome and prevent plaque retention. Conclusion: The combination of gingivectomy and gingival depigmentation can resolve gingival enlargement and gingival hyperpigmentation perfectly with close proximity to the ideal gingival condition.Keyword : Gingival depigmentation, Gingivectomy, Orthodontic
Optimization of Geopolymer Formula Based on Bauxite Tailings Using Curing Temperature and Activator Concentration Sitanggang, Eva Pramuni Oktaviani; Riysan Octy Shalindry; Shafira Kurnia; Hozaimah; Alyaa Salsabila Nurvi
Rekayasa Sipil Vol. 20 No. 2 (2026): Rekayasa Sipil Vol. 20 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2026.020.02.3

Abstract

The rapid growth of industrialization and urbanization has significantly increased Portland cement consumption, which accounts for approximately 6–7% of global CO? emissions. Geopolymer cement synthesized from industrial waste materials represents a promising low-carbon alternative. This study aims to investigate the feasibility of producing geopolymer cement from red mud, fly ash, and bauxite tailings waste through alkali activation, with emphasis on activator chemistry, concentration, and curing temperature. Geopolymer specimens were prepared using NaOH–Na?SiO? and KOH–K?SiO? activator systems with molarities of 10 M, 12 M, and 14 M, and cured at temperatures of 60 °C, 80 °C, and 100 °C. Mechanical properties, including compressive strength, water absorption, loss in ignition, and specific gravity, were evaluated, supported by XRD and FTIR analyses. The results indicate generally low compressive strength, with a maximum value of 2.10 MPa achieved using 14 M NaOH cured at 60 °C. This limited performance is attributed to incomplete geopolymerization caused by the dominance of crystalline phases that restrict aluminosilicate dissolution. Nevertheless, TCLP results confirm low heavy metal leaching, demonstrating effective immobilization within the geopolymer matrix. These findings highlight the environmental feasibility of red mud–fly ash–based geopolymers while emphasizing the need for compositional and reactivity optimization to enhance mechanical performance.
Co-Authors Alyaa Salsabila Nurvi Hozaimah Riysan Octy Shalindry Sitanggang, Eva Pramuni Oktaviani Yenniy Ismullah