TY - JOUR ID - 245696 TI - Shear Bond Strength of Orthodontic Attachments to Amalgam Surfaces Using Assure Universal Bonding Resin after Different Surface Treatments JO - Iranian Journal of Orthodontics JA - IJO LA - en SN - 1735-5087 AU - Naseh, Roya AU - Rahnamoon, Nima AU - Afshari, Maryam AD - Associate Professor of Orthodontics, Dental Caries Prevention Research Center, Qazin University of Medical Sciences, Qazvin, IR Iran AD - Assistant Professor, Orthodontic Department, Lorestan University of Medical Sciences, Khorramabad, IR Iran Y1 - 2016 PY - 2016 VL - 11 IS - 2 SP - 1 EP - 6 KW - Assure Universal Bonding Resin KW - Shear Bond Strength KW - Er KW - Cr YSGG Laser KW - Sandblasting KW - Amalgam DO - 10.17795/ijo.5804 N2 - Background: Assure Universal Bonding Resin is capable of providing a strong bond between orthodontic attachments and amalgam surfaces. Objectives: This study sought to assess the shear bond strength of orthodontic attachments to amalgam surfaces using Assure Universal Bonding Resin after different surface treatments. Methods: This in-vitro experimental study was conducted on 120 amalgam samples in eight groups of surface roughening with diamond bur, sandblasting with aluminum oxide particles, Er, Cr: YSGG laser irradiation and polishing-only. Molar buccal tubes were bonded to amalgam surfaces using Assure primer and Transbond Plus light-cure composite. Half the samples were immediately subjected to shear bond strength testing while the remaining half were incubated at 37°C for one week, thermocycled (1000 cycles) and were then subjected to shear bond strength test. One-way ANOVA was applied to compare the bond strength of the groups and Tukey’s test was used for pairwise comparisons. The adhesive remnant index (ARI; 4 point-scale) was also determined in the groups and the results were analyzed using the Kruskal-Wallis test. Results: Significant differences were noted in shear bond strength of attachments following the application of Assure among different surface treatment modalities (P < 0.001); the highest bond strength was noted in sandblasted group followed by laser, bur and polishing, respectively. Aging had no significant effect on bond strength. Conclusions: Sandblasting and irradiation of Er, Cr: YSGG laser provided sufficiently high bond strength between amalgam and attachments following the application of Assure. Diamond bur and polishing did not provide adequately high bond strength. UR - https://www.ijorth.com/article_245696.html L1 - https://www.ijorth.com/article_245696_f42d66f766e9f9c49bb61f64da32a1da.pdf ER -