Perbandingan Kekuatan Tarik Serta Letak Kegagalan Pelekatan Braket Logam Antara Adhesif Ortodonti Kandungan Selenium Dan Konvensional (Penelitan In Vitro)

FIBRIANA SAFITRI, Prof.Dr.drg. Pinandi Sri Pudyani, SU,Sp.Ort(K);drg. Soehardono D,MS.,Sp.Ort(K)

2017 | Tesis-Spesialis | SP ORTODONSIA

Perawatan ortodonti cekat beresiko terjadinya demineralisasi email. Penambahan antimikroba seperti selenium pada bahan adhesif diharapkan dapat mencegah demineralisasi email dengan kekuatan pelekatan yang adekuat dan tidak merusak email saat dilakukan debonding. Tujuan penelitian ini adalah untuk mengetahui perbandingan kekuatan tarik serta letak kegagalan pelekatan braket logam antara adhesif ortodonti dengan kandungan selenium dan adhesif konvensional. Penelitian dilakukan pada duabelas gigi premolar yang dibagi menjadi dua kelompok secara random. Gigi dilekati braket dengan bahan adhesif konvensional pada kelompok pertama (kelompok kontrol) dan bahan adhesif selenium pada kelompok kedua. Uji kekuatan tarik dilakukan menggunakan mesin pengukur Universal Testing Machine. Uji Adhesive Remnant Index (ARI) digunakan untuk mengetahui letak kegagalan pelekatan braket menggunakan stereomikroskop. Data dianalisis menggunakan Uji t untuk kekuatan tarik dan uji Mann Whitney untuk skor ARI. Hasil penelitian menunjukan bahwa tidak terdapat perbedaan kekuatan tarik antara kelompok bahan adhesif selenium (x¯ =9,22±0,75 MPa) dan pada kelompok bahan adhesif konvensional (x¯ =10,48±1,19 MPa). Nilai ARI kedua kelompok menunjukkan terdapat perbedaan letak kegagalan pelekatan braket ortodonti (p<0,05). Kesimpulan penelitian ini adalah kekuatan tarik bahan adhesif ortodonti selenium sebanding dengan adhesif konvensional. Letak kegagalan pelekatan bahan adhesif selenium antara adhesif dan braket, dan bahan adhesif konvensional antara adhesif dan email. Kata kunci : Adhesif, Selenium, Uji Kekuatan Tarik, Adhesive Remnant Index (ARI)

Enamel demineralization are the most undesired side-effect of fixed orthodontic treatments. The addition of antimicrobials such as selenium to the adhesive agent is expected to prevent enamel demineralization with adequate bond strength and without enamel damages during the debonding procedure. The aim of this study was to compare tensile strength and location of bond failure of metal bracket between adhesive containing selenium and conventional adhesive . The study was conducted on twelve extracted human premolars which randomly divided into two groups. Group I consisted of six teeth as controlled group and was applied with conventional adhesive and In group II consisted of six teeth was applied with adhesive containing selenium. Metal brackets tensile strength test was measured using Universal Testing Machine. The Adhesive Remnant Index (ARI) test was used to determine the location of bond failure using a stereomicroscope. Data were analyzed using t-test for tensile streght and Mann Whitney test for the ARI scores. The results showed that there were no difference in the tensile strength of metal brackets using selenium adhesive (x¯ =9,22±0,75 MPa) and conventional adhesive (x¯ =10,48±1,19 MPa). The ARI values of both groups showed that there were a difference in the failure of orthodontic bracket attachment (p <0.05). The conclusion of this research is the tensile strength of adhesive containing seleniums was no difference to conventional adhesive materials. The location of the bond failures of adhesive containing selenium occurred at the adhesives-brackets interface. The location of the bond failures of conventional adhesive occurred at the enamel-adhesive interface. Keywords: Adhesive, Selenium, Tensile Bond Strength, Adhesive Remnant Index (ARI)

Kata Kunci : Adhesif, Selenium, Uji Kekuatan Tarik, Adhesive Remnant Index (ARI)