PENGARUH AIR PERASAN JERUK NIPIS (CITRUS AURANTIFOLIA) DAN JERUK LEMON (CITRUS LIMON) TERHADAP KEKERASAN RESIN KOMPOSIT

RAHMAWATI, RIZKA and Hudiyati, Maya and Dwi, Rosada Sintya (2018) PENGARUH AIR PERASAN JERUK NIPIS (CITRUS AURANTIFOLIA) DAN JERUK LEMON (CITRUS LIMON) TERHADAP KEKERASAN RESIN KOMPOSIT. Undergraduate thesis, Sriwijaya University.

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Abstract

Lime and lemon are the fruit which are often used as squeezed water. Both have the difference of pH, type, and acidic content. The beverage with low pH can affect the hardness of a restorative material. The purpose of this study was to determine the effect of lime (Citrus aurantifolia) and lemon (Citrus limon) squeezed water on the hardness of composite resin. Thirty specimens of composite resin in form of disc with 10 mm diameter and 2 mm thickness were divided into 3 groups and were immersed in three different testing solution. Group A was the specimen immersed in lime squeezed water, group B was the specimen immersed in lemon squeezed water, and group C (control) was the specimen immersed in aquades. The hardness of composite resin was measured before being treated (pretest) by Vickers Hardness Tester. Specimens of composite resin were immersed for 28 days dan the hardness of composite resin was measured again (posttest) after the immersion. The data were tested statistically by using paired sample T-test, one way ANOVA, and post hoc LSD. The result of paired sample T-test showed that all groups had significant hardness decreasement. One way ANOVA test of the post-test group showed that there was significant difference in hardness value among the experimental groups. The hardness of composite resin for group A (350,70±3,302); B (356,90±6,064); and C (379,50±7,807). Post hoc LSD test showed that there was significant difference in hardness between each groups. The conclusion of this study was the lime and lemon squeezed water could decrease the hardness of composite resin.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: composite resin, hardness, lemon, lime
Subjects: R Medicine > RK Dentistry > RK1-715 Dentistry
Divisions: Faculty of Medicine > 12201-Dentistry (S1)
Depositing User: Mrs Dies Meirita Sari
Date Deposited: 24 Oct 2019 08:12
Last Modified: 24 Oct 2019 08:12
URI: http://repository.unsri.ac.id/id/eprint/13087

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