ABSTRAK Nama Mahasiswa : Fauziah Rahmadini
Program Studi : Kedokteran Gigi
Judul KTI : Perbedaan Waktu Penyinaran Resin Komposit Flowable Terhadap Kekuatan Tarik Braket Ortodontik
Pembimbing : drg. Indah Lestari Vidyahayati, MDSc., Sp.KGA Diah Rahayu Wulan dari, S.KM,MKes
Tujuan : Mengetahui perbedaan kekuatan tarik braket menggunakan resin komposit flowable dengan berbagai macam durasi penyinaran. Motode : Jenis penelitian eksperimen laboratoris dengan rancangan post test only control design. 27 sampel gigi premolar pertama rahang atas dibagi menjadi 3 kelompok, kelompok perlakuan 1 penyinaran light curing selama 20 detik, kelompok perlakuan 2 penyinaran light curing selama 40 detik, dan kelompok perlakuan 3 penyinaran light curing selama 60 detik. Sampel direndam saliva buatan selama 24 jam.
Kekuatan tarik braket diuji menggunakan universal testing machine. Hasil : Berdasarkan uji Paired T-test didapatkan nilai p < 0,05 yang menunjukkan terdapat perbedaan kekuatan tarik braket menggunakan resin komposit flowable dengan variasi durasi waktu penyinaran.
Kesimpulan : Terdapat perbedaan yang signifikan antara kekuatan tarik braket dengan lama penyinaran 20 detik, 40 detik, dan 60 detik.
Kata Kunci : Kekuatan tarik braket, Resin Komposit Flowable, Penyinaran light curing
ABSTRACT
Name : Fauziah Rahmadini
Study Program : Kedokteran Gigi
Title : Difference in Irradiation Time of Flowable Composite Resin on the Tensile Strength of Orthodontic Brackets
Counsellor : drg. Indah Lestari Vidyahayati, MDSc., Sp.KGA Diah Rahayu Wulan dari, S.KM,MKes
Objective: To determine the difference in tensile strength of brackets using flowable composite resins with various irradiation durations. Methods: Type of experimental laboratory research with post-test-only control design. Twenty-seven maxillary first premolar tooth samples were divided into three groups: group 1 received light curing irradiation for 20 seconds, group 2 received light curing irradiation for 40 seconds, and group 3 received light curing irradiation for 60 seconds. The samples were then soaked in artificial saliva for 24 hours. The tensile strength of the brackets was tested using a universal testing machine. Results: The paired T-test showed a p- value <0.05, indicating a difference in the tensile strength of brackets using flowable composite resins with variations in the duration of irradiation time. Conclusion: There is a significant difference between the tensile strength of the brackets with irradiation durations of 20 seconds, 40 seconds, and 60 seconds.
Keywords: Bracket tensile strength, Flowable Composite Resin, Light curing irradiation
