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All Journal Denta: Jurnal Kedokteran Gigi Sonde (Sound of Dentistry)
Hernindya Dwifulqi
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Dentistry

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Effect of Glass Fiber Reinforcement on the Mechanical Properties of Acrylic Resin Denture Base Jane Amelia Vebriani Wibisono; Hernindya Dwifulqi; Calvin Kurnia; Axel Adryanto
Denta Journal Kedokteran Gigi Vol 19 No 2 (2025): Agustus
Publisher : Fakultas Kedokteran Gigi Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/denta.v19i2.4

Abstract

Background: Acrylic resin dentures are frequently reported to experience damage within a few years after fabrication. Intraorally, repeated masticatory forces can lead to fatigue failure and fracture, while high extraoral impact forces, such as accidental drops, may also lead to fractures of the denture base. Objective: To determine the optimal concentration of glass fibers reinforcement that provides the highest values of impact strength, transverse strength, and hardness in acrylic resin. Materials and Methods: A total of 48 acrylic resin samples were divided into four groups based on glass fiber concentration: 0%,6%,9%, and 12%. Each group was tested for impact strength, transverse strength, and hardness. Samples dimension for impact strength: 65 mm x 10 mm x 2.5 mm, 80 mm x 10 mm x 4 mm for transverse strength, and tube-shaped with a diameter of 5 mm and a thickness of 3 mm for hardness test. Testing equipment for impact strength: Charpy testing machine (Resil Impactor Ceast 6958.000), Universal Testing Machine (Shimadzu AGS-X 10kN for transverse strength, and Vickers machine (HMV-G) for hardness test. Results: The highest impact strength was observed in the group with 0% glass fibers. Meanwhile, the addition of 12% glass fibers exhibited the highest transverse strength exhibited and the highest hardness was achieved in samples containing 6% glass fibers. Conclusion: The addition of 12% glass fiber enhances the transverse strength of acrylic resin but decreases impact strength. Meanwhile, adding 6% glass fiber improves the hardness of acrylic resin.
Pengaruh Pelapisan yang Dapat Dimakan terhadap Perubahan Warna dan Sifat Mekanik Resin Akrilik yang Disembuhkan dengan Panas yang Direndam dalam Teh Hitam (Camellia Sinensis) Hernindya Dwifulqi; Silvia Nailani; Vinna Kurniawati Sugiaman; Theodora Adhisty Dwiarie; Maria Florensia Rosa Centifolia Bulata Dolu
Denta Journal Kedokteran Gigi Vol 19 No 2 (2025): Agustus
Publisher : Fakultas Kedokteran Gigi Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/denta.v19i2.3

Abstract

Background: Dentures are a standard treatment option for replacing missing teeth. One of the most essential components of dentures is the denture base. However, the acrylic resin has a weakness, namely that it has porosity, which can cause water absorption and colour changes. Water absorption in the acrylic resin can affect its colour stability, flexural strength, and hardness over a specific period. Tea is a drink often consumed in Indonesia. Black tea has undergone oxidation of several polyphenolic compounds (catechins). The fermentation process results in the oxidation of simple polyphenols, where tea catechins are converted into more complex and concentrated molecules that give black tea its characteristic colour. The edible coating is a thin layer made from consumable materials that acts as a barrier. Objective: To determine the effect of edible coating on heat-cured acrylic resin denture plates on colour retention, flexural strength, and hardness after soaking in black tea. Materials and Methods: This research utilized 25 heat-cured acrylic resin plates, divided into five groups with varying soaking times for the edible coating. The plates were then soaked in black tea for 15 hours, after which testing was conducted on the color resistance, hardness, and flexural strength of the heat-cured acrylic resin plates. Results: Acrylic resin plates with chitosan have better colour retention than acrylic resin not soaked with chitosan. Meanwhile, flexural strength and hardness values between groups did not differ significantly. Conclusion: Chitosan immersion affects the colour durability of the heat-cured acrylic resin denture base without significantly decreasing the hardness and strength values.
Morfologi Permukaan Glass Ionomer Cement dengan Penambahan Nanoselulosa Kristalin dari Serat Ampas Tebu Hernindya Dwifulqi; Rosalina Tjandrawinata; Joko Kusnoto
SONDE (Sound of Dentistry) Vol. 9 No. 1 (2024): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/sod.v9i1.11501

Abstract

Perkembangan penelitian teknologi nano membuat penggunaan cellulose nanocrystalline (CNC) menjadi alternatif menarik dalam meningkatkan sifat mekanis glass ionomer cement (GIC). Ampas tebu (Saccharum officinarum L.) merupakan sumber CNC, dengan selulosa nanokristal berkristalinitas tinggi (72,5%). Tujuan penelitian ini adalah untuk mengetahui pengaruh penambahan CNC serat ampas tebu pada sifat mekanis GIC. Sampel GIC (GC Fuji IX) untuk pengujian dibagi dalam 2 kelompok yaitu kontrol dan penambahan 0,2% CNC ampas tebu. Setelah disimpan di dalam aqua distilata dalam inkubator 370C selama 24 jam, sampel dikarakterisasi dengan scanning electron microscope (SEM). Penambahan CNC serat ampas tebu sebanyak 0,2% menunjukkan hasil SEM dengan morfologi permukaan yang lebih padat dan tidak berporus. Dapat disimpulkan bahwa penambahan ampas tebu dengan konsentrasi 0,2% dapat menunjukan morfologi permukaan yang tidak berporus.
Co-Authors Axel Adryanto Calvin Kurnia Dwiarie, Theodora Adhisty Jane Amelia Vebriani Wibisono Joko Kusnoto Maria Florensia Rosa Centifolia Bulata Dolu Rosalina Tjandrawinata Silvia Nailani Vinna Kurniawati Sugiaman