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ortho - the international C.E. magazine of orthodontics

10 I I C.E. article_ self-ligating systems power after being subjected to a load of 20 N for a period of two hours. • The differences between the stages M1 and M3 were statistically non-significant only for In-Ovation C group (GAC–DENTSPLY, United States), which denoted greater mechanical stability. There is not a perfect and ideal interactive self-ligating bracket system. However, both groups In-OvationRandIn-OvationCperformedbetterthan theotherbrandsinallthetrialswhenthemagnitude of force loss was considered._ _References 1. Nobrega C, Motta F, Janovich C. Evaluation of the biomechanical behavior of self-ligating interactive bracket’s clips: part 1. Ortodontia SPO, 46 (6):565–573, 2013. 2. Pizzoni L, Ravnholt G, Melsen B. Fricional forces related to self-ligating brackets. Eur. J. Orthod., Oxford, v.20, p. 283–291, 1998. 3. ShivapujaPK,BergerJ.Acomparativestudyofconventional ligation and self-ligatingbracket systems. Am. J. Orthod. DentofacialOrthop., St.Louis, v.106, p.172–180, 1994. 4. Sims APT, Waters NE, Birnie BJ. Pethybridget, R.J. A comparison of the forces required to produce tooth movement in vitro using two-self-ligating brackets and a pre-adjusted bracket employing two types of ligation. Eur. J. Orthod., Oxford, v.15, p.377–385, 1993. 5. Harradine NWT. Current Products and Practices Self- ligating brackets: where are we now? Bristol: Bristol Dental Hospital; 2003. 6. Rinchuse DJ, Miles PG. Self-ligating brackets: present and future. Am. J. of Orthod. and Dentofacial Orthop., v. 132, n. 2, p. 216–222, 2007. 7. Nóbrega C. Biomecânica Inteligente Interativa Autoligante: Mitos e Fatos. Nova visão em Ortodontia e Ortopedia Funcional dos Maxilares. Ed. Santos, cap. 20, p.225–233, 2010. 8. Henao SP, Kusy RP. Evaluation of the frictional resistance of conventional and self ligating bracket designs using standardixed archwires and dental typodonts. Am. J.Orthod. Dentofacial Orthop., St. Louis, v.74,p.202–211, 2004. 9. Nóbrega C, Silva PC. Biomecânica Interativa Autiligante: Otimizando a prescrição Roth. Orto 2008/SPO. Nova Visão em Ortodontia e Ortopedia Funcional dos Maxilares. Ed. Santos, cap 08 p 07–14, 2008. 10. Berger JL. Replacement of the Spring Clip in the SPEED Appliance. J Clin Orthod. 1994 Oct;28(10):583-6. Nova Visão em Ortodontia e Ortopedia Funcional dos Maxilares. Ed. Santos, cap 08 p 07–14, 2008. 11. Nóbrega C, Epstein M, Jakob SR. Biomecânica Autoligante interativa: uma releitura após 10 anos. Orto 2012/SPO. Nova Visão em Ortodontia e Ortopedia Funcional dos Maxilares. Ed. Santos, p 133–178, 2012. 12. Gioka C, Eliades T. Materials-induced variation in the torque expression of preadjusted appliances. Am J Orthod Dentofacial Orthop. Mar;125(3):323–328, 2004. 13. Gick MR, Nóbrega C, Benetti JJ, Jakob SR, Zucchi TU, Arsati F. Estudo comparative do movimento de torque induzido pelos sistemas autoligantes e convencionais. Orthodontic Science and Practice. 2012; 5(17): 37–46. 14. Guidi G. Estudo comparativo da força do clipe ativo em três marcas de braquetes autoligantes. 50p. Dissertação (Mestrado em Odontologia) — centro de Pós-Graduação São Leopoldo Mandic, 2010. 15. Dahlan A, Pober R, Ferguson D, Giordano R. Evaluation of SLB Clip Breaking Force. Boston: Boston University, Goldman School of Dental Medicine; 2005. 16. Pandis N, Bourauel C, Eliades T. Changes in the stiffness of the ligating mechanism in retrieved active self- ligating brackets. Am J Orthod Dentofacial Orthop. 2008;132:834–837. ortho1_2014 Dr. Celestino Nobrega completed his general dental training at Sao Paulo StateUniversity,Brazil,in1984.Hecompletedhiscertificateinorthodon- tics at Rio de Janeiro State at Brazilian Dental Association. His masters of dental science degree came in 1996, after publishing material about MRIsofTMJs.AftertakingtheRoth-Williamscontinuingeducationcourse at Burlingame in 1997, he received the position of educator at several academic associations in Brazil, organizing courses as post-graduate program director. The search for innovative technologies led Nobrega to Dr. Elliot Moskowitz, who introduced him to NYU Ortho Department Chairman Dr. George Cisneros. Months later, Nobrega began bringing groupsofhisstudentsandformerstudentstoNYUforone-weekprograms created especially for them. During these programs, Nobrega was able to have a closer and definitive contact with ISL mechanics, learning about biological and mechanical details. Today, Nobrega is leading a project in his country focusing on 19 biomechanical studies regarding characteris- ticsoftheinteractiveself-ligatingsystem.Theresearchisbasedonfriction andflexibilitystudiesandalsoonlow-intensitylaserandvibrationtherapy during orthodontic treatment. _about the author ortho

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