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All Journal Jurnal Kedokteran Brawijaya ODONTO Dental Journal Odonto dental journal
Lisyani Suromo, Lisyani
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Health Professions Medicine & Pharmacology

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IgM-RF pada Anak Terinfeksi Virus Dengue Tidak Berkorelasi dengan Jumlah Trombosit dan Hematokrit Jatmiko, Safari Wahyu; Suromo, Lisyani; Dharmana, Edi
Jurnal Kedokteran Brawijaya Vol 29, No. 4 (2017)
Publisher : Fakultas Kedokteran Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkb.2017.029.04.4

Abstract

Banyak teori diajukan untuk menjelaskan patogenesis trombositopenia dan hemokonsentrasi pada Infeksi Virus Dengue (IVD), termasuk teori autoimun. Hal ini menimbulkan pertanyaan apakah Rheumatoid Factor (RF) yang biasa ditemukan pada pasien autoimun juga ditemukan dan berhubungan dengan perubahan jumlah trombosit dan nilai hematokrit pada pasien IVD. Tujuan penelitian adalah untuk membuktikan hubungan RF dengan jumlah trombosit dan nilai hematokrit pada anak terinfeksi virus dengue. Desain penelitian menggunakan analisis korelatif dengan pendekatan belah lintang dilakukan terhadap 40 pasien yang mengalami demam minimal 4 hari dan memenuhi kriteria diagnostik IVD menurut WHO 2009, usia di bawah 14 tahun, dan diagnosis dikonfirmasi dengan antibodi antidengue. Pasien dengan riwayat penyakit autoimun dan riwayat immunocompromised dikeluarkan dari penelitian. Sampel diambil secara konsekutif. Darah rutin diperiksa penggunakan hematology analyzer sedangkan RF diperiksa dengan metode aglutinasi lateks. Data diolah dengan uji korelasi Spearman. Hasil penelitian menunjukkan pasien dengan RF (+) sebanyak 62,5%. Hasil uji korelasi RF dan jumlah trombosit menunjukkan nilai r=0,151 dengan p=0,354 sedangkan hasil uji korelasi RF dan nilai hematokrit nilai r=0,3 dengan p=0,06. Penelitian ini menunjukkan bahwa tidak terdapat korelasi antara kadar RF serum dengan jumlah trombosit pada pasien IVD dan antara kadar RF serum dengan nilai hematokrit pada pasien IVD, walaupun ada kecenderungan peningkatan kadar RF serum diiringi dengan kenaikan nilai hematokrit.
CORRELATION OF SURFACE ROUGHNESS AND FRICTION RESISTANCE IN ORTHODONTICS Aditya, Grahita; Santoso, Oedijani; Suromo, Lisyani; Nugraha, Reeza Maulana
Odonto : Dental Journal Vol 9, No 1 (2022): July 2022
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (284.706 KB) | DOI: 10.30659/odj.9.1.153-157

Abstract

Background: The orthodontic bracket transmit significant force from orthodontic wire to the teeth. Metal ions from the bracket may undergo biodegradation due to corrosion and create micro pit on the surface which increase friction resistance. Friction resistance between the archwire and the bracket may effect tooth movement and cause loss of anchorage. This study determine the correlation between surface roughness and friction resistance in orthodontic Roth brackets.Method: Seventeen brackets were prepared from previous study and were analyzed using SEM-EDX (Phenom Pro X) to measure surface roughness. Friction resistance were measured using universal testing machine. Data were analyzed using Spearman correlation.Result: Significant correlation were found between surface roughness and friction resistance on orthodontic brackets (p<0.05). The relationship is strongly correlated and directly proportional, with a positive coefficient value of 0.587. Conclusion: The conclusion of the research showed that there was a significant correlation between surface roughness and friction resistance of orthodontic brackets.
CORRELATION OF SURFACE ROUGHNESS AND FRICTION RESISTANCE IN ORTHODONTICS Aditya, Grahita; Santoso, Oedijani; Suromo, Lisyani; Nugraha, Reeza Maulana
Odonto : Dental Journal Vol 9, No 1 (2022): July 2022
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.9.1.153-157

Abstract

Background: The orthodontic bracket transmit significant force from orthodontic wire to the teeth. Metal ions from the bracket may undergo biodegradation due to corrosion and create micro pit on the surface which increase friction resistance. Friction resistance between the archwire and the bracket may effect tooth movement and cause loss of anchorage. This study determine the correlation between surface roughness and friction resistance in orthodontic Roth brackets.Method: Seventeen brackets were prepared from previous study and were analyzed using SEM-EDX (Phenom Pro X) to measure surface roughness. Friction resistance were measured using universal testing machine. Data were analyzed using Spearman correlation.Result: Significant correlation were found between surface roughness and friction resistance on orthodontic brackets (p<0.05). The relationship is strongly correlated and directly proportional, with a positive coefficient value of 0.587. Conclusion: The conclusion of the research showed that there was a significant correlation between surface roughness and friction resistance of orthodontic brackets.
Co-Authors Edi Dharmana Grahita Aditya Nugraha, Reeza Maulana Oedijani Santoso Safari Wahyu Jatmiko