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All Journal Journal of Indonesian Dental Association Jurnal Kedokteran Gigi Terpadu
Dewi Liliany Margaretta
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Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology

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Pengaruh Aplikasi Karbamid Peroksida 20% Dan 35% Terhadap Kekerasan Resin Komposit Mikro Hibrid Dewi Liliany Margaretta; Vega Indriana
Jurnal Kedokteran Gigi Terpadu Vol. 2 No. 1 (2020): Jurnal Kedokteran Gigi Terpadu
Publisher : Fakultas Kedokteran Gigi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.112 KB) | DOI: 10.25105/jkgt.v2i1.7535

Abstract

Background: Many people are very concerned about performance especially in terms of the appearance of their teeth. Various attempts were made to improve the appearance of teeth by bleaching. Carbamide peroxide and hydrogen peroxide as bleaching materials may release free radicals which affect surface roughness of the composite restoration. Objective: to determine the effect of carbamide peroxide 20% and 35% on micro hybrid resin composite hardness Methods: Samples are micro hybrid resin composite with 4 mm thickness and 10 mm diameter. Total number is 10 samples for each groups which were divided into 2 groups: group 1 application of 20% carbamide peroxide and group 2 application of 35% carbamide peroxide. Each group were tested prior, after 7 and 14 days using Vickers Hardness. Result: The results indicate that there was no significant effect of 20% carbamide peroxide on resin composite hardness for 7 days with (p > 0.05) and 35% for 7 days (p > 0.05), but the use of carbamide peroxide 20% and 35% on a micro hybrid resin composite for 14 days yielded a significant increase in hardness (p<0.01). Conclusion: The use of carbamide peroxide 20% and 35% for 7 and 14 days did not cause hardness decrease on micro hybrid resin composite.
Effect of Strawberry Juice (Fragaria Ananassa) on Mechanical Properties of Nanofilled Composite Resins Stephanie Justine Kusnadi; Dewi Liliany Margaretta; Rosalina Tjandrawinata
Journal of Indonesian Dental Association Vol. 6 No. 2 (2023): October
Publisher : Indonesian Dental Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jida.v6i2.953

Abstract

Introduction: Nanofilled composite resins have small filler particles size (1-100 nm). Its mechanical properties consist of hardness, surface roughness, and water absorption. Composite resins easily degraded by acid pH because it contains polymer with unstable bonds. Degradation can cause water absorption. It can be scratched more easily if they have low hardness. Rough surfaces can cause the risk of plaque formation, secondary caries, discoloration, damage to the surface of the patch, reduces resistance, accelerates abrasion, and can cause irritation to the surrounding soft tissue. Objective: To analyze the effect of mechanical properties (water absorption, hardness, and surface roughness) on nanofilled composite resins after strawberry juice (Fragaria ananassa) immersion. Methods: This research was a laboratory experimental with post-test and control group design. Forty cylindrical samples of nanofilled composite resins Filtek Z350XT (3M ESPE) (10mm x 2 mm) were divided into four groups: water absorption group, hardness tested group, surface roughness tested group, and control group. Surface roughness tested group and hardness tested group were immersed in strawberry juice each 10 mL for 2 hours a day and repeated for 12 days. After 10 and 12 days of immersion, hardness tested group, surface roughness tested group, and control group will be measured using surface roughness test and hardness test. Water absorption test will be carried out before immersion and after 10 and 12 days of immersion. Results: One Way ANOVA statistical test on surface roughness test showed a p-value of 0.001 (p<0.05) and the water absorption test show a p-value of 0.983 (p>0.05). Post Hoc Tukey test had significant difference of roughness tested on day 12 and control group with a p-value of 0.01 (p<0.05). Conclusions: Strawberry juice increases surface roughness of nanofilled composite resins after 2 hours immersion for 12 days in comparison with control group.
Co-Authors Rosalina Tjandrawinata Stephanie Justine Kusnadi Vega Indriana