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Effect of 100% Chamomile Extract on The Number of Staphylococcus Aureus Bacterial Colonies in Orthodontic Bracket (In Vitro Study) Prasetyadi, Tjokro; Deviyanti, Sinta; Maharani, Karlina Rahma
YARSI Dental Journal Vol. 1 No. 2 (2024): YARSI DENTAL JOURNAL
Publisher : Lembaga Penelitian Universitas YARSI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33476/ydj.v1i2.160

Abstract

Abstract Background: Fixed orthodontic appliances in malocclusion treatment consist of several components. Bracket components in fixed orthodontic appliances cause side effects such as gingivitis due to retention of Staphylococcus aureus bacterial plaque. Chamomile flower extract contains antibacterial compounds, α-bisabolol. Objective: To analyze 100% chamomile extract effectiveness of Staphylococcus aureus bacteria colonies in orthodontic bracket. Methods: This study using post test only control group design. Chamomile extract procure from percolation methods. Eighteen orthodontic brackets were divided into three groups, soaked in artificial saliva for 1 hour, contaminated with Staphylococcus aereus, then immersed in 100% chamomile flower extract solution, 0,2% chlorhexidine (positive control), and aquadest (negative control) for 30 minutes. Total of 0,1 ml of multilevel serial dilution from three different groups was dripped and streaked onto Brain heart infusion agar, incubated for 24 hours at 37oC for further colony counting tests. Results: S. aureus bacteria colonies in orthodontic bracket group with 100% chamomile flower extract solution was not significantly different from 0,2% chlorhexidine group (p>0,05), but significantly lower than aquadest group (p<0,05). Conclusion: The 100% chamomile extract solution as effective as Chlorhexidine 0,2% in reducing number of Staphylococcus aureus colonies in orthodontic braket. Keywords: Staphylococcus aureus, the 100% chamomile extract, Chlorhexidine 0,2%, orthodontic brackets.
Pengaruh tugas akademik, lingkungan belajar klinis, dan fasilitas klinis terhadap produktivitas kerja mahasiswa profesi di rumah sakit gigi mulut: Studi Cross-sectional Sudrajat, Nabilah Khairunnisa; Prasetyadi, Tjokro; Budiharto, Budiharto
Padjadjaran Journal of Dental Researchers and Students Vol 10, No 2 (2026): June 2026
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v10i2.69757

Abstract

ABSTRAKPendahuluan: Produktivitas kerja mahasiswa profesi kedokteran gigi merupakan penopang mutu pelayanan rumah sakit gigi dan mulut pendidikan, namun capaiannya bervariasi antarmahasiswa. Rendahnya atau tidak optimalnya produktivitas kerja mahasiswa profesi dapat menghambat pencapaian kompetensi klinik, menurunkan mutu pelayanan, dan memperpanjang masa pendidikan, sehingga faktor-faktor yang memengaruhinya penting untuk diteliti. Penelitian ini bertujuan menganalisis asosiasi tugas akademik, lingkungan belajar klinis, dan fasilitas klinis dengan produktivitas kerja mahasiswa profesi. Metode: Studi kuantitatif potong lintang (cross-sectional) analitik korelasional terhadap 120 dari 171 mahasiswa profesi yang dipilih secara simple random sampling (rumus Slovin, e = 5%). Data dikumpulkan dengan kuesioner tertutup skala Likert lima poin yang valid (r = 0,467-0,940; r tabel = 0,441) dan reliabel (Cronbach’s alpha = 0,885-0,911), lalu dianalisis dengan statistik deskriptif, korelasi Pearson, dan regresi linier berganda. Hasil: Ketiga variabel berasosiasi positif dan signifikan dengan produktivitas kerja: tugas akademik (B = 0,319; SE = 0,089; β = 0,275; t = 3,596; p < 0,001; IK95% 0,143-0,495), lingkungan belajar klinis (B = 0,282; SE = 0,096; β = 0,292; t = 2,945; p = 0,004; IK95% 0,092-0,472), dan fasilitas klinis (B = 0,276; SE = 0,100; β = 0,262; t = 2,767; p = 0,007; IK95% 0,078-0,474). Model simultan signifikan (F(3;116) = 32,411; p < 0,001) dengan R = 0,675; R² = 0,456; dan R² terkoreksi = 0,442. (4) Simpulan: Tugas akademik, lingkungan belajar klinis, dan fasilitas klinis berasosiasi positif dengan produktivitas kerja mahasiswa profesi dan bersama-sama menjelaskan 45,6% variasinya.      KATA KUNCI: fasilitas klinis, lingkungan belajar klinis, mahasiswa profesi, produktivitas kerja, tugas akademikThe association of academic tasks, clinical learning environment, and clinical facilities with the work productivity of dental professional students in teaching dental hospital: Study Cross-sectionalABSTRACTIntroduction: The work productivity of dental professional students supports the quality of services provided by teaching dental hospitals, yet it varies considerably among students. Suboptimal work productivity among dental professional students can hinder the achievement of clinical competence, lower the quality of care, and prolong the training period, making the factors that influence it important to investigate. This study aimed to analyze the associations of academic tasks, the clinical learning environment, and clinical facilities with work productivity among dental professional students at a teaching dental hospital. Methods: A quantitative cross-sectional analytical correlational study was conducted on 120 of 171 professional students selected by simple random sampling (Slovin formula, e = 5%). Data were collected using a closed-ended five-point Likert-scale questionnaire that was valid (r = 0.467-0.940; r table = 0.441) and reliable (Cronbach’s alpha = 0.885-0.911), and were analysed using descriptive statistics, Pearson correlation, and multiple linear regression. Results: All three variables were positively and significantly associated with work productivity: academic tasks (B = 0.319; SE = 0.089; β = 0.275; t = 3.596; p < 0.001; 95% CI 0.143-0.495), clinical learning environment (B = 0.282; SE = 0.096; β = 0.292; t = 2.945; p = 0.004; 95% CI 0.092-0.472), and clinical facilities (B = 0.276; SE = 0.100; β = 0.262; t = 2.767; p = 0.007; 95% CI 0.078-0.474). The overall model was significant (F(3,116) = 32.411; p < 0.001) with R = 0.675, R² = 0.456, and adjusted R² = 0.442. Conclusions: Academic tasks, the clinical learning environment, and clinical facilities were positively associated with work productivity and jointly explained 45.6% of its variance. KEY WORDS: academic tasks, clinical facilities, clinical learning environment, dental professional students, work productivity