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Reni Purba, Member
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Dentistry

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THE DIFFERENCES IN THE EFFECTS OF PROPOLIS, SODIUM HYPOCHLORITE, AND EDTA AS AN IRRIGANT SOLUTIONS ON THE MICROHARDNESS OF ROOT CANAL DENTIN: IN-VITRO STUDY Florencia Farrent Br S. Pandia, Ellen; Soraya Tanjung, Dian; Reni Purba, Member
Journal of Health and Dental Sciences Vol. 4 No. 3 (2025): Journal of Health and Dental Sciences
Publisher : Fakultas Kedokteran Gigi Unjani

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Sodium hypochlorite (NaOCl) and EDTA are commonly used irrigants due to their antimicrobial properties and ability to dissolve both organic and inorganic components. However, the use of these chemicals at varying concentrations and durations can affect the physical and chemical properties of root canal dentin. Recently, propolis has gained attention as an alternative irrigant because it shows similar potential to conventional irrigants. The aim of this study is to examine whether there are differences in the effects of propolis extract, NaOCl, and EDTA on the microhardness of root canal dentin. This study utilized 24 single-rooted premolar teeth. The crowns were removed, and the roots were longitudinally split into two halves. Samples were randomly divided into six groups (n=8), each immersed in 8% propolis, 20% propolis, 30% propolis, 2.5% NaOCl, 5% NaOCl, and 17% EDTA. The microhardness of root canal dentin was measured using a Vickers Hardness Tester before and after immersion. Data were analyzed using One Way ANOVA. The results showed that 8% propolis had the smallest decrease in microhardness among all treatment groups, with an average difference in initial and final microhardness of 3.68, followed by 20% propolis, 2.5% NaOCl, 5% NaOCl, 30% propolis, and 17% EDTA. The conclusion of this study is that there are significant differences (p<0.05) among the treatment groups regarding the microhardness of root canal dentin. Extracts of 8% and 20% propolis can be used as alternative irrigants. DOI : 10.54052/jhds.v4n3.p255-264
DIFFERENCES IN MICROHARDNESS OF MICROHYBRID COMPOSITE RESIN AFTER EXPOSURE TO ALCOHOL-BASED, ALCOHOL-FREE, AND HERBAL MOUTHWASHES: AN IN VITRO STUDY Reni Purba, Member; Erawati, Suci; Surta Simbolon, Winda
Journal of Health and Dental Sciences Vol. 5 No. 3 (2026): Journal of Health and Dental Sciences
Publisher : Fakultas Kedokteran Gigi Unjani

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Composite resin is one of the most widely used restorative materials in dentistry due to its aesthetic properties, mechanical strength, and ease of manipulation. However, the long-term mechanical stability of composite resins can be affected by chemical exposure, such as from mouthwash solutions used in daily oral hygiene routines. This study aimed to determine the difference in microhardness of microhybrid composite resin after immersion in mouthwash containing alcohol, alcohol-free mouthwash, and herbal mouthwash. This was an experimental laboratory study with a pre-test and post-test group design. A total of 30 samples of microhybrid composite resin (Solare X) were divided into three groups, each immersed for 48 hours at 36°C in Listerine Multi Protect Zero (alcohol-containing), MeToo Mouthwash Probiotic (alcohol-free), and Amodent Gargle with Cardamom Essential Oil (herbal). The microhardness values were measured using a Vickers Hardness Tester, and the data were analyzed using One Way ANOVA followed by Post Hoc Bonferroni tests. The results showed a significant increase in surface hardness after immersion in all groups, with the highest mean value in the alcohol-containing mouthwash group (32.85 VHN), followed by the herbal mouthwash (29.23 VHN), and the alcohol-free mouthwash (24.05 VHN) (p < 0.05). It can be concluded that all types of mouthwash have a significant effect on the surface hardness of microhybrid composite resin. The increase in hardness is likely due to the high filler content, strong silane coupling, and post-cure polymerization process occurring during immersion DOI : 10.54052/jhds.v5n3.p321-330
Co-Authors Erawati, Suci Florencia Farrent Br S. Pandia, Ellen Soraya Tanjung, Dian Surta Simbolon, Winda