Introduction: Denture cleanser must be able to remove bacterial plaque layers, eliminate food debris, with non-toxic properties. Denture cleansing was performed by immersing the denture into a solution of H 2 O 2 . Continuous denture wear can lead to plaque accumulation of Candida albicans colonies thus causes denture stomatitis. There was a slight dimensional stability difference of the self-cured acrylic base compared to the heat-cured after immersion in water. This study was aimed to analyse the effect of denture cleansing solution (H 2 O 2 ) on the water solubility of self-cured acrylic resin. Methods: Twentyfour specimens of self-cured acrylic resin sized 15 x 20 x 2 mm, were divided into the control group (n = 12) and the treatment group (n = 12). All specimens were then immersed in the aquadest (control group) and H 2 0 2 (treatment group) for 6, 8, and 10 hours consecutively. Result: The average water solubility of self-cured acrylic resin soaked in H 2 O 2 solution at 6 hours was 0.0007 µg/mm 3 ; at 8 hours was 0.0011 µg/ mm 3 ; and at 10 hours was 0.0013 µg/mm 3 . The average water solubility of self-cured acrylic resin soaked in aquadest solution at 6 hours was 0.0013 µg/mm 3 ; at 8 hours was 0.0080 µg/mm 3 ; and at 10 hours was 0.0125 µg/mm 3 . Conclusion: The water solubility of the self-cured acrylic resin immersed in the H 2 O 2 solution for 6, 8, and 10 hours was still below the ISO standard.
Latar belakang: Resin komposit memiliki beberapa sifat yaitu menyerupai warna gigi dan dapat diaplikasikan langsung ke dalam kavitas gigi sehingga memiliki keuntungan dalam segi estetika dan waktu. Resin komposit flowable adalah salah satu jenis resin komposit yang memiliki tingkat viskositas yang rendah dan banyak digunakan pada kavitas servikal, pasien anak-anak dan restorasi pada bagian yang tidak mendapatkan tekanan yang tinggi. Salah satu penyebab perubahan warna pada resin komposit adalah polimerisasi yang tidak sempurna yang diakibatkan oleh kurangnya waktu penyinaran ataupun rendahnya intensitas sinar LED. Tujuan: Menjelaskan pengaruh perbedaan intensitas sinar LED terhadap perubahan warna pada resin komposit flowable. Metode: Penyinaran dilakukan pada intesitas sinar LED 2400 mW/cm2 selama 2 detik dan intesitas sinar LED 600 mW/cm2 selama 20 detik untuk melihat perbedaan warna pada resin komposit flowable. Pengukuran warna resin komposit dilakukan menggunakan spectrophotometer Vita EasyShade untuk melihat nilai light, chrome, dan hue pada resin komposit. Analisis data menggunakan uji parametrik T-test Independent. Hasil: Terdapat perbedaan yang signifikan pada nilai light, chroma, dan hue pada pada resin komposit flowable yang disinar dengan intensitas sinar LED 2400 mW/cm2 dan dengan intensitas sinar LED 600 mW/cm2. Kesimpulan: Terjadi perubahan yang signifikan pada warna light, chroma, dan hue pada pada resin komposit flowable yang disinar dengan intensitas sinar LED 2400 mW/cm2 selama 2 detik.
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