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All Journal Dentika Dental Journal Jurnal Material Kedokteran Gigi Sriwijaya Journal of Dentistry Cakradonya Dental Journal

Sefty Aryani Harahap

Department Of Dental Material And Technology Science, Faculty Of Dentistry, Universitas Sumatera Utara

Author-ID : 1157845

Dentistry Health Professions Immunology & microbiology Materials Science & Nanotechnology Public Health

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Articles

TEKNOLOGI NANO DI BIDANG KEDOKTERAN GIGI: NANO TECHNOLOGY IN DENTISTRY Sefty Aryani Harahap; Sumadhi Sastrodihardjo
Dentika: Dental Journal Vol. 18 No. 2 (2014): Dentika Dental Journal
Publisher : TALENTA

Akhir-akhir ini teknologi nano semakin berkembang pesat di bidang kedokteran gigi. Penggunaan teknologi ini akanmemungkinkan pengembangan ilmu material dan bio-teknologi. Teknologi nano mengembangkan bahan dalam bentukpartikel berukuran nano untuk mendapatkan produk-produk yang lebih baik. Hal ini erat hubungannya denganperkembangan bahan dan perawatan di kedokteran gigi. Makalah ini akan memaparkan mengenai pengaplikasianteknologi nano, teknologi pemanipulasian serta tujuan penggunaan teknologi nano di bidang kedokteran gigi.Nanokomposit, dental implan, nanoadhesif, bahan cetak nano, gigi tiruan, pasta gigi dan kawat ortodonti merupakanbahan yang telah menggunakan teknologi nano. Sintesa partikel nano dapat diakukan dengan metode top down (fisika)dan metode bottom up (kimia). Sebagai kesimpulan, dengan teknologi nano ini akan diperoleh sifat-sifat bahan yang lebihbaik pada sifat fisis (hardness, translusensi, flow), mekanis (strength, modulus of elasticity, strength, khemis(osseointegrasi) dan biologis. Walaupun demikian masih ada keburukan yang masih kontroversi pada penggunaanteknologi nano, misalnya sitotoksisitas.

Pengaruh Desinfeksi Energi Microwave Terhadap Kekuatan Transversal Resin Akrilik Polimerisasi Panas Sefty Aryani Harahap; Lasminda Syafiar; Yosepha Yulinda Esdaria Lubis
Jurnal Material Kedokteran Gigi Vol 8 No 1 (2019): JMKG Vol 8 No 1 Maret 2019
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v8i1.363

Disinfectant by microwave energy is highly recommended as a solution to solve the problem of chemical disinfection on denture bases. One of the denture base materials is heat cured acrylic resin. Aim, to evaluate the effect of disinfectant by microwave energy with different time on the transversal strength of heat cured acrylic resin. 30 plates (n = 6) of heat cured acrylic resin with size 65x10x2,5 mm were divided into 5 groups (control; and microwave energy disinfected for 2, 4 , 6, and 8 minutes with 650 Watts of power). Transversal strength test was carried out using Torsee's Electronic System Universal Testing Machine with a test speed of 0.1 mm / second, and a load cell of 50 kgf. Data analyzed using one-way ANOVA and LSD pos hoc. Results, there were significant differences in the transverse strength among all groups (p <0.05). Mean values of all groups were 103.59 ± 0.66 MPa; 112.02 ± 2.10 MPa; 117.48 ± 1.73 MPa; 125.46 ± 2.25 MPa; and 135.89 ± 1.56 MPa respectively. Conclusion, the longer it is disinfected by microwave energy, the higher the transversal strength of heat cured acrylic resin.

Role of Composition to Degree of Conversion of Bulk Fill Composite Resins Sefty Aryani Harahap; Yosi Kusuma Eriwati
Jurnal Material Kedokteran Gigi Vol 6 No 1 (2017): JMKG Vol 6 No 1 Maret 2017
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

A recent technology of Bulk fill composite resin has been developed to save manipulation time. Bulk fill composite resinhas been claimed to have depth of cure up to 4 mm with a high degree of conversion. This paper will evaluate the role of bulk fill composite resin’s composition in increasingits degree of conversion. The degree of conversion is the percentage of carbon double bonds that were converted into single bonds as a result of polymerization. It is determined by its composition that contained filler, resin matrix and the photoinitiator. With the development and modifications of the composition, the bulk fill compositeresin can be obtained a high degree of conversion so that the expected properties can be achieved.

Kekuatan Transversal Termoplastik Nilon, dan Campuran Resin Akrilik Polimerisasi Panas dan Serat Kaca Lasminda Syafiar; Sefty Aryani Harahap; Richard Salim
Jurnal Material Kedokteran Gigi Vol 9 No 1 (2020): JMKG Vol 9 No 1 Maret 2020
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v9i1.436

Heat cured acrylic resin which is often used as a base for dentures has the disadvantage of being easily broken, the use of flexible denture materials made of nylon thermoplastic has become a new innovation to increase strength. Aim this research to evaluate transversal strength between 1 wt% glass fiber added heat cured acrylic resin and nylon thermoplastic. Thirty two specimens (n=16) with size 65x10x2,5 mm were divided into 2 groups (Nylon termoplastic, and 1 wt% glass fiber added to heat cured acrylic resin). Transversal strength was tested using Torsee’s Electronic System Universal Testing Machine with a load cell of 50 kgf and a test speed of 0.1 mm / second. Statistical data analyzed with unpaired t-test. Results, transversal strength mean value of glass fiber 1 wt% added heat cured acrylic resin was 104,03±9,29 MPa, while nylon termoplastic was 313,89±27,44 MPa. There was statistically significant transversal strength difference between both of groups (p <0.05). Conclusion, It can be concluded that nylon termoplastic had higher transversal strength than 1 wt% glass fiber added heat cured acrylic resin.

Color Changes Of Discolored Human Teeth After Immersion In Spinach Extract In Different Durations Sefty Aryani Harahap; Lasminda Syafiar; Kristin Halim
Sriwijaya Journal of Dentistry Vol. 3 No. 1 (2022): Sriwijaya Journal of Dentistry
Publisher : Dentistry Study Program, Faculty of Medicine Universitas Sriwijaya

Introduction: Recently, natural dental bleaching agents are being developed to replace chemical dental bleaching agents. Chemical dental bleaching agents containing hydrogen peroxide have the potential to cause toxicity as a side effect. Spinach leaves are natural ingredients that contain oxalic acid which can whiten teeth. Purpose: To investigate the color changes in discolored human teeth after immersion in spinach extract in different durations. Methods: 30 human premolar samples were divided into 3 groups, group A (immersion in 28 hours), group B (immersion in 42 hours), and group C (immersion in 56 hours). All 30 samples were discolored with coffee solution for 12 days and color status (L1, a1, b1) were measured using the chromameter. Then, each 10 samples were immersed in spinach extract according to their treatment group, and the color status (L2, a2, b2) were measured again. Color changes (∆E) were calculated with a formula concerning L, a, b data measured. Results: A significant color change is observed between group A, group B, and group C (p-value= 0.002), and further comparison between three groups showed that group A differed significantly with group C (p-value=0.000), group B also showed significant difference with group C (p-value=0.038). However, there was no significant difference between group A and group B (p-value=0.121). Conclusion: The significant color changes can only be observed after 56 hours of immersion. The spinach leaf extract has the potential to be used as a natural dental bleaching agent.

Perubahan Warna Resin Komposit Mikrohibrid Setelah Pemutihan Dengan Hidrogen Peroksida 15% Kholidina Imanda Harahap; Astrid Yudhit; Sefty Aryani Harahap
Cakradonya Dental Journal Vol 6, No 2 (2014): Desember 2014
Publisher : FKG Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.643 KB)

Sekarang ini dental estetik berkembang dengan maju dan salah satunya adalah berkaitan dengan warna gigi. Pasien lebih memilih restorasi yang memiliki warna seperti warna gigi aslinya ataupun menjalani pemutihan gigi untuk mendapatkan warna yang lebih terang sehingga mungkin saja pasien yang memiliki tambalan resin komposit akan melakukan pemutihan gigi juga. Oleh karena itu, tujuan penelitian ini adalah untuk mengevaluasi efek bahan pemutih gigi hidrogen peroksida 15% terhadap perubahan warna resin komposit mikrohibrid. Penelitian ini menggunakan 25 sampel resin komposit mikrohibrid warna A3 dengan diameter 7 mm dan tebal 2 mm. Pengamatan warna dilakukan pada seluruh sampel sebelum dan setelah perlakuan dengan menggunakan shade guide dan diberikan skor untuk setiap hasil pengamatan. Aplikasi bahan pemutih hidrogen peroksida 15% dilakukan selama 20 menit dan perlakuan diulang untuk 10 hari. Hasil analisis statistik uji t-dependent menunjukkan perbedaan signifikan antar kelompok (p0,05). Kesimpulan dari penelitian ini adalah perubahan warna resin komposit mikrohibrid yang signifikan antara sebelum dan setelah perlakuan

Co-Authors Eriwati, Yosi Kusuma Kholidina Imanda Harahap Kristin Halim Lasminda Syafiar Lasminda Syafiar Richard Salim Sumadhi Sastrodihardjo Yosepha Yulinda Esdaria Lubis Yudhit, Astrid

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