Journal of International Dental and Medical Research ISSN 1309-100X Analysis of the Compounds of Dental Enamel http://www.jidmr.com Asmawati, and et al Volume ∙ 11 ∙ Number ∙ 2 ∙ 2018 Page 656 An Analysis of the Compounds of Dental Enamel after Application Strawberry Gel with Energy-Dispersive X-ray Spectroscopy (EDS) Asmawati 1 *, Bahruddin Thalib 2 , Nurhayati Natsir 3 , Irene E. Rieuwpassa 1 , Alqarama Mahardhika 4 , Rafikah Hasyim 1 1. Department of Oral Biology, Faculty of Dentistry, Universitas Hasanuddin, Makassar, Indonesia. 2. Department of Prosthodontic, Faculty of Dentistry, Universitas Hasanuddin, Makassar, Indonesia. 3. Department of Conservative, Faculty of Dentistry, Universitas Hasanudidn, Makassar, Indonesia. 4. Oral and Dental Hospital, Universitas Hasanuddin, Makassar, Indonesia. Abstract To analyze compounds of dental enamel after strawberry gel application. This study using six central incisors maxillary that has been extracted. Six central incisors maxillary were divided into five time series, one tooth is used as a control and five tooth given applications of strawberry gel for 1 hour, 1 hour 30 minutes, 2 hours, 2 hours 30 minutes and 3 hours. Then, compounds of dental enamel observed by using Energy-Dispersive X-Ray Spectroscopy. An analysis using non- parametric test (Kruskal Wallis test) to determine differences compounds that occur at each time range. The results of this study, p value = 0.406> 0.05. This means there is no significant difference on dental enamel compound between the control group and the group that had been treated with strawberry gel application. There was no significant effect between time duration and changes in mineral compounds of dental enamel after application of strawberry gel. Clinical article (J Int Dent Med Res 2018; 11(2): pp. 656-662) Keywords: Compound dental enamel, dental bleaching, strawberry gel. Received date: 22 January 2018 Accept date: 18 February 2018 Introduction In the era of globalization, aesthetics is one thing that the public is concerned, especially those working in the entertainment field such as movie stars, models, singers, and they are very demanding field of work looks like the flight attendant, news readers, and executive marketing. 1 Tooth discoloration can be derived from various sources of intrinsic and extrinsic. Intrinsic discoloration caused by trauma of the pulp (which produces hemorrhagic) of genetic and congenital disorders (eg, phenylketonuria, congenital hyperbilirubinemia, amelogenesis and dentinogenesis imperfecta) or medications (eg, tetracycline and fluorosis). Meanwhile, extrinsic discoloration only affects the enamel surface. This occurs because the consuming beverages and foods that contain dyes that are very high, smoking and poor oral hygiene. 2 Tooth whitening or better known by the term bleaching is a way back tooth whitening discolored tooth to near native colors with the repair process chemically whose main purpose is to restore function to the person's aesthetic. The number of patients who are sensitive to bleaching materials and the high cost to be incurred for treatment makes many researchers both outside and within the country to look for other alternative materials that are safer and cheaper to use as a bleaching material. 1 Strawberry is one of the natural ingredients that can be used to whitening back teeth that have changed color. 1 Strawberry contain elagat acid and malic acid that can whiten teeth. Part of the strawberry plants can be used to whiten teeth is the fruit and leaves. 2,3 Malic acid is said to be involved in the process of erosion. These acids can bind calcium in dental enamel and cause porosity crystal enamel which have an impact on the occurrence of dental erosion will further lower the surface hardness of teeth. 4 *Corresponding author: Asmawati Department of Oral Biology Faculty of Dentistry, Universitas Hasanuddin Makassar Indonesia. E-mail: asmaamin281068@gmail.com