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Angela Evelyna
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Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Medicine & Pharmacology Public Health

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Perbedaan Kekuatan Geser Perlekatan (Shear Bond Strength) Antara Self – Adhering Flowable Composite dan Flowable Composite dengan Sistem Adhesif Self – Etch pada Dentin Steven Tanjung; Rudy Djuanda; Angela Evelyna
SONDE (Sound of Dentistry) Vol. 4 No. 1 (2019): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.119 KB) | DOI: 10.28932/sod.v4i1.1767

Abstract

Restoration is a treatment to restore the structure of missing dental hard tissue due to caries. Flowable composite has good adaptability to the cavity wall so that it is widely used as an intermediate layer. Composite resins require an adhesive system to bond chemically with dental hard tissue. Self - adhering flowable composite combining etching, priming, and adhesive in one flowable package. This study was conducted with the aim to determine the difference in shear bond strength between Self – adhering flowable composite and flowable composite with self – etch adhesive system on dentine. The number of samples used was 38 pieces. After dentin was prepared and fixed, samples was divided into 2 groups, each group consisting of 19 samples. First group was applied with self – adhering flowable composite, second group was applied with flowable composite with self – etch adhesive system. Samples was immersed in pH 6.8 normal saline and stored for 24 hours, then dried and shear bond strength was tested using a universal testing machine. The data obtained were analyzed using independent t – test. The statistical analysis using independent t – test showed that there were significant differences in the shear bond strength between the two groups, p=0,000 (p<0.05). The study concluded that there is difference of shear bond strength between self – adhering flowable composite and flowable composite with self – etch adhesive system on dentine.
Perbedaan Kebersihan Sepertiga Apikal Saluran Akar dari Smear Layer Menggunakan Sistem Aktivasi Ultrasonik dan Sonik Della Puspita; Rudy Djuanda; Angela Evelyna
SONDE (Sound of Dentistry) Vol. 4 No. 1 (2019): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (485.792 KB) | DOI: 10.28932/sod.v4i1.1768

Abstract

Irrigant activation is important for successful endodontic treatment. There are some of activation technique those are manual irrigation with needle irrigation and mechanics irrigation with sonic, and ultrasonic activation. The aim of this study was to compare the effectiveness between sonic and ultrasonic activation technique as irrigation activation for smear layer removal in apical third of the root canal. Fifteen mandibular premolars were used. NaOCl 2,5% and EDTA 17% was used as an irrigant. Sample were divided into 3 equal group (n=5) according to the final activation technique: group I as a needle irrigation II as a ultrasonic activation, group III sonic activation. Root canals were split longitudinnaly and subjected to scanning electron microscope with 2000x magnification. Data were evaluated using statistics kruskall wallis and mann whitney. The result of this study shows there were statistically significant differences in staistics Mann Whitney on group III were more clean than group II p < 0,05. Sonic technique more effective in removal of smear layer in apical third of the root canal than ultrasonic activation technicque. Important to noted the variant of irrigant and activation.
Efek Penambahan Nanoselulosa Terhadap Compressive strength Bone cement Berbasis Kalsium Fosfat Cindy Chakornnipit Fadly; Angela Evelyna; Bambang Sunendar
SONDE (Sound of Dentistry) Vol. 3 No. 2 (2018): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.686 KB) | DOI: 10.28932/sod.v3i2.1786

Abstract

Bone cement kalsium fosfat merupakan generasi terbaru material pengganti tulang. Semen ini menghasilkan hidroksiapatit yang memiliki struktur kimia dan morfologi komponen dasar yang menyerupai tulang sehingga bone cement dapat digunakan untuk memfiksasi implan gigi immediate loading dental implan yang memiliki beberapa keuntungan. Namun sifat mekanisnya rendah sehingga perlu ditambah filler agar sifat mekanisnya meningkat Penelitian ini bersifat eksperimental laboratorium dan dilakukan untuk membuat bone cement dengan alginat sebagai matriks yang ditambahkan nanoselulosa kristalin dan kalsium fosfat hidroksiapatit sebagai filler. Filler nanoselulosa kristalin disintesis dengan hidrolisis asam kemudian dikarakterisasi menggunakan TEM dan XRD. Pengujian sifat mekanis yang dilakukan yaitu uji tekan kompresi. Analisis dilakukan dengan ANOVA one way, dilanjutkan dengan Post Hoc Tuckey. Hasil uji tekan kompresi memperlihatkan kompresi tertinggi pada kelompok V (nanoselulosa 2%) sebesar 8,161 Mpa. Kesimpulan pada penelitian ini adalah penambahan filler nanoselulosa kristalin pada bone cement berbasis kalsium fosfat meningkatkan compressive strength.
Perbedaan Kekuatan Transversa Resin Akrilik Heat Cured yang Direndam pada Larutan Eeffervescent dan Perasan Daun Salam (Eugenia Polyantha Wight) Chintya Citra K; Angela Evelyna; Dahlia Sutanto
SONDE (Sound of Dentistry) Vol. 2 No. 1 (2017): SONDE (Sound of Dentistry)
Publisher : Maranatha Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.433 KB) | DOI: 10.28932/sod.v2i1.1789

Abstract

Saat ini pembersih yang sering digunakan untuk membersihkan gigi tiruan sebagian lepasan adalah larutan effervescent dibantu dengan metode mekanik yaitu menyikat gigi tiruan menggunakan sikat gigi berbulu halus dan pasta gigi. Masalah dari metode pembersihan tersebut adalah dapat menurunkan kekuatan landasan gigi tiruannya. Penelitian ini bertujuan untuk mengetahui pengaruh perasan daun salam sebagai pembersih gigi tiruan terhadap kekuatan transversa resin akrilik heat cured. Spesimen akrilik berukuran 65 x 13 x 3.3 mm sebanyak 24 buah direndam dalam larutan effervescent dan perasan daun salam dengan variasi waktu yang berbeda 30 menit dan 8 jam selama 7 hari, lalu diuji kekuatan transversanya dengan Universal Testing Machine. Didapatkan perbedaan kekuatan transversa resin akrilik heat cured yang direndam larutan effervescent dan perasan daun salam, kelompok perasan daun salam 8 jam mengalami peningkatan kekuatan transversa secara signifikan sebesar -83.5 N lebih tinggi dibanding kelompok larutan effervescent 8 jam. Kandungan fenol ? 0.005% daun salam tidak menyebabkan difusi berlebihan pada resin akrilik. Kesimpulannya terdapat perbedaan kekuatan transversa resin akrilik heat cured yang direndam pada larutan effervescent dan perasan daun salam.
Co-Authors Bambang Sunendar Chintya Citra K Cindy Chakornnipit Fadly Dahlia Sutanto Della Puspita Rudy Djuanda Steven Tanjung