Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal E-Prodenta Journal of Dentistry Denta: Jurnal Kedokteran Gigi
Calvin Kurnia
Unknown Affiliation
Dentistry Health Professions Medicine & Pharmacology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Efek Antibakteri Ekstrak Etanol Buah Asam Jawa (Tamarindus indica L.) terhadap Pertumbuhan Bakteri Prevotella intermedia Fatta Wijaya; Calvin Kurnia; Vinna Kurniawati Sugiaman
E-Prodenta Journal of Dentistry Vol 6 No 2 (2022)
Publisher : Fakultas Kedokteran Gigi UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.eprodenta.2022.006.02.4

Abstract

Latar Belakang : Periodontitis merupakan penyakit inflamasi yang disebabkan oleh mikroorganisme, berkembangdari waktu ke waktu yang diawali dengan akumulasi plak gigi. Salah satu mikroorganisme yang memiliki hubungandalam terjadinya periodontitis adalah Prevotella intermedia, yang merupakan bakteri gram negatif yang seringdiisolasi pada plak gigi. Buah asam jawa (Tamarindus indica L.) mengandung metabolit sekunder yaitu senyawaflavonoid, tanin, saponin, alkaloid, triterpenoid, dan fenolik yang berperan sebagai antibakteri. Tujuan: Penelitianini bertujuan untuk mengetahui aktivitas antibakteri buah asam jawa (Tamarindus indica L.) terhadap pertumbuhanbakteri Prevotella intermedia dengan mengukur Kadar Hambat Minimal (KHM) dan Kadar Bunuh Minimal (KBM).Metode: Metode yang digunakan dalam penelitian ini adalah metode dilusi, sebanyak 10 perlakuan dengankonsentrasi 100%, 50%, 25%, 12,5%, 6,25%, 3,13%, 1,56%, 0,78%, kontrol positif dengan chlorhexidineglukonat 0,2%, kontrol negatif menggunakan akuades. Hasil: Data dianalisis menggunakan uji statistik KruskallWallis sebagai pengganti uji statistik One way ANOVA karena tidak berdistribusi normal. Hal ini menunjukkan pvalue < 0,05 yang menunjukkan penurunan jumlah koloni bakteri Prevotella intermedia terhadap beberapakonsentrasi yang diuji. KHM terjadi pada konsentrasi 3,125% dan KBM pada konsentrasi 6,25%. Kesimpulan:Ekstrak etanol buah asam jawa (Tamarindus indica L.) memiliki efek sebahai antibakteri terhadap Prevotellaintermedia dengan KHM pada konsentrasi 3,125% dan KBM pada konsentrasi 6,25%. Kata Kunci: Asam Jawa, Antibakteri, Dilusi, Periodontitis, Prevotella intermedia
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.
Co-Authors Axel Adryanto Fatta Wijaya Hernindya Dwifulqi Jane Amelia Vebriani Wibisono Vinna Kurniawati Sugiaman