TY - JOUR ID - 251374 TI - Shear Bond Strength of Two Light Cure Composites after Thermocycling JO - Iranian Journal of Orthodontics JA - IJO LA - en SN - 1735-5087 AU - Pezeshki Rad, Hossein AU - Poosti, Maryam AU - Moazami, Mostafa AU - Moshaverniad, Sara AD - Assistant Professor, Orthodontic Dept., School of Dentistry and Dental Research Center, Mashhad University of Medical sciences, Mashhad, IRAN AD - Associate Professor, Operative Dentistry Dept., School of Dentistry and Dental Research Center, Mashhad University of Medical sciences, Mashhad ,IRAN AD - General Dentist Y1 - 2006 PY - 2006 VL - 1 IS - 4 SP - 168 EP - 171 KW - Light cure KW - Thermocycle KW - Shear Bond Strength DO - 10.22034/ijo.2006.251374 N2 - Aim: Application of light cure composites has become very popular in orthodontics. The aim of this study was to compare shear bond strength (SBS) of Ideal Maccoo and Vit L-essence light cure composites in bracket bonding after thermocycling. Materials and Methods: 100 intact freshly extracted upper first premolars were randomly assigned into four equal groups. In the first and second group Vit L-essence composite was applied to the bracket base and transferred to buccal enamel surface and cured for 40 seconds. In the third and fourth group Ideal Maccoo composite was used for bracket bonding. After 24 hours the teeth in the first and third group were thermocycled between 5 to 55°C and then debonding was performed by Zwick testing machine. The mean shear bond strength of four groups was compared by ANOVA test. Results: There was no significant difference between Vit L-essence and Ideal Maccoo composite either before or after thermo cycling. SBS also did not differ significantly before and after thermo cycling in each single group. Conclusion: It was concluded that: 1-Therrnocycling did not affect the SBS of Vit-Lessence and Ideal Maccoo composite in bracket bonding. 2- There was no significant difference in SBS of Vit L-essence and Ideal Maccoo composite either before or after themocycling (DO 2006; 1:168-71). UR - https://www.ijorth.com/article_251374.html L1 - https://www.ijorth.com/article_251374_6b738c9f5a949f480fa941620d8a938d.pdf ER -